Showing papers on "Aluminium hydroxide published in 2016"

Geochemical controls on aluminium concentrations in coastal waters

Abstract: Environmental context Aluminium may be released into coastal waters in dissolved and particulate forms from urban runoff, industrial discharges and acid sulfate soils. Aquatic organisms may experience toxic effects from exposure to dissolved and particulate aluminium. Therefore, the current study reports the geochemical controls such as speciation, precipitation and adsorption that influence the exposure to these aluminium forms in the field and the laboratory. Abstract A combination of field and laboratory investigations was conducted in order to gain an understanding of aluminium dynamics in coastal seawater environments. Filterable ( 0.025 to <0.45µm) aluminium species were generally minimal, apart from one field sample collected close to a river mouth where aluminium was associated with iron-containing colloids. In seawater (pH 8.15, 22°C) spiked with small increments of aluminium so as not to attain supersaturation, the solubility limit was ~500µgL–1. However, at higher total aluminium concentrations the solution chemistry became highly dynamic. In the presence of aluminium precipitate it was not possible to measure a solubility limit over the 28-day duration of the experiment because the dissolved aluminium concentration varied with both reaction time and precipitate concentration. For instance, when seawater solutions were spiked with 10000µgL–1 of total aluminium, a pulse of dissolved aluminium up to 1250µgL–1 was sustained for several days before decreasing to below 100µgL–1 after 28 days. The initial precipitate appeared to be solely aluminium hydroxide and transformed over time to contain increasing magnesium, consistent with the formation of hydrotalcite (Mg6Al2CO3(OH)16·4H2O), reaching 21% of the precipitate mass after 28 days. Adsorption studies showed that at anticipated suspended particulate concentrations for coastal waters, natural particulate material has a fairly low affinity for dissolved aluminium. The results of the current study highlight the complex chemistry of aluminium in marine waters and the role of precipitation reactions.

Synthesis of zeolite NaA membrane from fused fly ash extract.

Abstract: Zeolite-NaA membranes were synthesized from an extract of fused South African fly ash on a porous titanium support by a secondary growth method. The influence of the synthesis molar regime on the formation of zeolite NaA membrane layer was investigated. Two synthesis mixtures were generated by adding either aluminium hydroxide or sodium aluminate to the fused fly ash extract. The feedstock material and the synthesized membranes were characterized by X-diffraction (XRD), scanning electron microscopy (SEM) and X-ray fluorescence spectroscopy (XRF). It was found by XRD and SEM that the cubic crystals of a typical zeolite NaA with a dense intergrown layer was formed on the porous Ti support. The study shows that the source of Al used had an effect on the membrane integrity as sodium aluminate provided the appropriate amount of Na(+) to form a coherent membrane of zeolite NaA, whereas aluminium hydroxide did not. Morphological, the single hydrothermal stage seeded support formed an interlocked array of zeolite NaA particles with neighbouring crystals. Also, a robust, continuous and well-intergrown zeolite NaA membrane was formed with neighbouring crystals of zeolite fused to each other after the multiple stage synthesis. The synthesized membrane was permeable to He (6.0 × 10(6) L m(-2)h(-1) atm(-1)) and CO2 (5.6 × 10(6) L m(-2)h(-1) atm(-1)), which indicate that the layer of the membrane was firmly attached to the porous Ti support. Membrane selectivity was maintained showing membrane integrity with permselectivity of 1.1, showing that a waste feedstock, fly ash, could be utilized for preparing robust zeolite NaA membranes on Ti support.

Aluminum-based copper clad laminate, and preparation method thereof

Abstract: The invention discloses an aluminum-based copper clad laminate The aluminum-based copper clad laminate comprises an aluminium base layer, a copper layer, and a resin insulating layer; the resin insulating layer is composed of, by weight, phenolic resin, isocyanate modified epoxy resin, polystyrene resin, isophorone diamine, oxidized graphene, melamine, aluminium hydroxide, aluminium nitride, silica micropowder, methyl silicate, polyoxyethylene cetyl stearyl diether, and a silane coupling agent; the aluminium base layer is prepared from an aluminium copper alloy base plate; and the aluminium copper alloy base plate is composed of copper, manganese, cerium, boron, carbon, and the balance aluminum The invention also discloses a preparation method of the aluminum-based copper clad laminate The aluminum-based copper clad laminate possesses relatively high heat conductivity and breakdown voltage, and is suitable for electron application field with requirements on large power, high precision, smaller size, and high voltage resistance

Bifluoride ([HF2](-)) formation at the fluoridated aluminium hydroxide/water interface.

Abstract: This study uncovers bifluoride-type (difluorohydrogenate(I); [HF2]−) species formed at mineral/water interfaces. Bifluoride forms at Al–F surface sites resulting from the partial fluoridation of gibbsite (γ-Al(OH3)) and bayerite (α-Al(OH3)) particles exposed to aqueous solutions of 50 mM NaF. Fluoride removal from these solutions is proton-promoted and results in a strongly self-buffered suspensions at circumneutral pH, proceeds at a F : H consumption ratio of 2 : 1, and with recorded losses of up to 17 mM fluoride (58 F nm−2). These loadings exceed crystallographic site densities by a factor of 3–4, yet the reactions have no resolvable impact on particle size, shape and mineralogy. X-ray photoelectron spectroscopy (XPS) of frozen (−155 °C) wet mineral pastes revealed coexisting surface F− and HF0 species. Electron energy loss features pointed to multilayer distribution of these species at the mineral/water interface. XPS also uncovered a distinct form of Na+ involved in binding fluoride-bearing species. XPS and solid state magic angle spinning 19F nuclear magnetic resonance measurements showed that these fluoride species were highly comparable to a sodium-bifluoride (NaHF2) reference. First layer surface species are represented as Al–F–H–F–Al and Al–F–Na–F–Al, and may form multi-layered species into the mineral/water interface. These results consequently point to a potentially overlooked inorganic fluorine species in a technologically relevant mineral/water interfacial systems.

Comprehensive recovery method of waste and old cathode charcoal block of aluminium electrolytic tank

Abstract: The invention relates to a comprehensive recovery method of waste and old cathode charcoal block of an aluminium electrolytic tank, and belongs to the technical field of comprehensive utilization of industrial solid waste resources. The method is as below: crushing and grinding waste and old cathode charcoal block of the aluminium electrolytic tank at 200-400 DEG C, insulating, removing cyanide, conducting flotation separation on the material with cyanide removed to obtain carbon slag and electrolyte slag, heating the electrolyte slag at 550-800 DEG C to remove carbon impurities, so as to obtain an electrolyte powder, removing to soluble substances in the electrolyte slag by alkali leaching to obtain a carbon powder with high purity, and precipitating a mixture of cryolite and aluminium hydroxide form the alkali leaching liquid by CO2. The invention has the advantages of reasonable process design, simple process, high treatment efficiency, high recovery rate and recycling rate of each material and no secondary pollution, and is applicable to large-scale industrial application.

Glass ceramic produced by all electric fused rolling process technique using coal gangue as raw materials and production method therefor

Abstract: The invention discloses a glass ceramic produced by all electric fused rolling process technique using coal gangue as raw materials and the production method therefor. The glass ceramic comprises 4% to 5% of sodium monoxide, 9% to 12% of magnesium oxide, 11% to 13% of aluminium sesquioxide, 55% to 65% of silicon dioxide, 0.28% to 2% of ferric sesquioxide, 2.8% to 4% of potassium monoxide, 3% to 5% of calcium oxide and 1.5% to 2% of titanium dioxide. The present invention uses multiple materials of coal gangue, quartz sand, calcium dihydrogen phosphate, aluminum hydroxide, coarse whiting, light burning magnesium, sodium carbonate, potash, and titanium dioxide as raw materials. The materials are melted at high temperature and formed by calenders, then processed through the annealing treatment. The product is cut into board after cooling down to the room temperature. Then, the glass ceramic board is produced by nucleation, crystallization and anneal. The blue glass ceramic series produced by the present invention has good mechanical properties, acid and alkali resistance. The glass ceramic meets the national class A test standard of radioassay. The production method can reduce the consumption of aluminium hydroxide in quantity to lower the cost of production by replacing aluminium oxide with coal gangue. The glass ceramic with different depths of blue can be produced by adjusting the ratio of coal gangue and aluminium hydroxide.

Evaluation of Aluminum Hydroxide-Amended Zeolites in Fluoride Removal: Column Filtration and Regeneration

Abstract: Pure aluminum (hydr)oxide (AlOOH) and AlOOH-amended sodalite exhibited good performance in column fluoride removal studies in terms of service time (time until breakthrough), energy require...

High-performance neoprene cable material

Abstract: The invention discloses a high-performance neoprene cable material The high-performance neoprene cable material comprises following raw materials: neoprene, chlorosulfonated polyethylene, nitrile butadiene rubber, polyacrylonitrile fibers, zinc oxide, stearic acid, carbon nanofibers, nano calcium carbonate, nano titanium dioxide, active magnesium oxide, kaolin, aluminium hydroxide, zinc borate, tricresyl phosphate, dioctyl sebacate, acetyl tri(2-ethylhexyl) citrate, dibutyl maleate, an accelerator, trithiocyanuric acid, ethylene thiourea, an ant-aging agent, cerium oxide, lanthanum oxide and lanthanum stearate The high-performance neoprene cable material has high strength, good heat resistance, good anti-aging performance and excellent stability and processability

Formulation and Charcterization of Lake Color Obtained From Red Cabbage

Abstract: Colorants are mainly used to impart a distinctive appearance to the pharmaceutical dosage forms. The present study was carried out to develop aluminium lake color of a dye obtained from red cabbageusing different adsorbent (s) (Aluminium oxide or aluminium hydroxide or combination of both) in different ratio by simply mixing them to get dye adsorbed onto the surface of adsorbent.Batch Mode studies were carried out for 60 minutes. Aluminiumhydroxide at a concentration level of 30% w/v found to be the choice of adsorbent after optimization because maximum adsorption of dye from reaction mixture after 60 minutes and maximum % yield.After optimization of adsorbent the effect of pH and temperature also studied by formulating lake by varying these two parameters. It was observed that a higher temperature (50oC) and a slight acidic pH (6) favor the adsorption. The lake then characterized for various physicochemical properties like angle of repose, Carr’s index, hausner’s ratio, loss on drying, particle size and limit test for heavy metals. The lake was found to follow pseudo second order kinetics.

Anti-impact anti-static modified polyvinyl chloride pipe

Abstract: The invention discloses an anti-impact anti-static modifiedpolyvinyl chloride pipe which is prepared from polyvinyl chloride, ABS resin, chlorinated polyethylene, a styrene-acrylonitrile copolymer, poly-4-methyl-1-amylene, zinc oxide modified graphene oxide, nano calcium carbonate, zinc borate, aluminium hydroxide, modified montmorillonite serving as a coupling agent, glass fibers, penta-(isooctyl thioglycolate)antimony, epoxy soybean oil, pentaerythritol, calcium stearate, stearic acid, oxidized polyethlene wax, acetyl tributyl citrate, phosphorous acid tri(2,4-di-tert-butylbenzene) ester. The anti-impact anti-static modifiedpolyvinyl chloride pipe provided by the invention is high in impact resistance and excellent in antistatic property; a prepared product is high in comprehensive performance, can meet the requirements of various fields of coal mine, petroleum and textile and is long in service life.

Improved isolation layer fireproof material for fireproof wires and cables and manufacturing method thereof

Abstract: The invention relates to an improved isolation layer fireproof material for fireproof wires and cables and a manufacturing method thereof.The fireproof material is prepared from, by weight, 15-40 parts of sodium silicate, 2-6 parts of perlite, 4-10 parts of calcium hydroxide, 25-40 parts of aluminium hydroxide, 2-5 parts of magnesium hydroxide, 3-10 parts of ceramic powder, 3-8 parts of glass powder, 3-10 parts of bentonite and 3-10 parts of mica powder.Compared with the prior art, inorganic materials in different types are mixed with glue, and the product is obtained through extrusion after the materials are mixed evenly.When the fireproof material is used, an isolation fireproof layer with the thickness of 2.5 mm is extruded in a wire core and cured into a layer of thick shell at the temperature of 200-300 DEG C when meeting fire, the insulating wire core is protected against flame burning, the material quickly expands in the process and has the heat-isolation and flame-retardant effects, the cable wire core is helped to be cooled, and the carrying capacity is improved.The heat-resistant level of the fireproof material reaches 180 min at the temperature of 950-1200 DEG C.The material has the effects of heat isolation, flame retardance and expansion, is mainly suitable for wires, cables, control cables, special cables and other special high-temperature-resistant wires.

Composite treatment agent for acid gas and heavy metal and treating method for acid gas and heavy metal

Abstract: The invention relates to a composite treatment agent for acid gas and heavy metal and a treating method for acid gas and heavy metat, which are capable of fully lowering alkalinity in flying ash in a wide additive amount range so as to solve a problem of late stage procedure of flying ash treatment caused by overdose or insufficiency of acid gas treatment agents come along with qualitative change of waste. The composite treatment agent for acid gas and heavy metal comprises a double salt and at least two chemical compounds chosen from chloride, sulfate and hydroxide, wherein the double salt contains calcium hydroxide and magnesium hydroxide. In order to achieve high raw material stability and mixing stability, the specific surface area of preferable double salt is higher than 20 m2/g, and a median particle diameter (d50) is less than 30 [mu]m. Preferably, an alkalinity lowering agent preferably contains at least two chosen from magnesium sulfate, sulfate-containing aluminium hydroxide, zinc sulfate, copper sulfate, magnesium hydroxide, aluminum hydroxide, ferric hydroxide, ferrous hydroxide, zinc hydroxide and copper hydroxide.

Immune responses induced in rabbits after oral administration of bovine serum albumin in combination with different adjuvants (herb extracts, aluminium hydroxide and platinum nanoparticles)

Abstract: The aim of the current study was to evaluate the immunostimulatory activity of 10 different herbal extracts from Vitex agnus-castus , Vinca major, Aloe arborescens and the polyherbal product containing extracts from Sambucus nigra , Primula versis , Pinus alba , Gentiana lutea , Cetraria islandica , Eucaliptus globulus , Citrus limon and aluminium hydroxide, as well as platinum nanoparticles. Rabbits were immunized three times orally with bovine serum albumin (BSA) in combination with the components mentioned above. BSA-specific IgA antibodies in saliva and IgG antibodies in serum were examined by ELISA. It was found that the rabbits immunized with BSA in combination with either platinum nanoparticles or aluminium hydroxide had higher titres of BSA-specific IgA antibodies in their saliva at day 56 of observation. Likewise, rabbits treated with BSA and Vinca major or Aloe arborescens extracts showed higher levels of BSA-specific IgG antibodies in the serum at the end of observation. These results suggest that some plant extracts, aluminium hydroxide and platinum nanoparticles components could be used as oral adjuvants or as immunomodulators for rabbits.

Non-poisonous fireproof moistureproof insulating cable

Abstract: The invention belongs to the field of cables, and discloses a non-poisonous fireproof moistureproof insulating cable. The cable is prepared in a manner that an insulating outer layer wraps a conductor, and the insulating outer layer is made of the following materials: aluminium hydroxide, graphite, silicon carbide, triphenyl phosphate, oleamide, magnesium hydroxide, glass fibers, borax, palygorskite, stearic acid, aluminium nitride, egg shells, triallyl cyanurate, polypropylene resin, EPDM, polyethylene, and hydrogenated butadiene-acrylonitrile rubber. The conductor is an aluminium alloy conductor or an aluminium copper alloy lead. The cable is better in fireproof, moistureproof and waterproof performances and mechanical performances.

First-tank temperature controlling and discharging grading method for producing sandy aluminium oxide through two-segment decomposition

Abstract: The invention belongs to the field of production of aluminium oxide, and concretely relates to a first-tank temperature controlling and discharging grading method for producing sandy aluminium oxide through two-segment decomposition. According to the method, a part of refined solution is cooled and deployed, the temperature controlling requirement for two-segment decomposition is satisfied, temperature is controlled by directly using cold and hot refined solutions, partial discharging is employed, and the finished product and fine crystal seed of which the quantity satisfies the two-segment decomposition granularity index requirement are discharged in a grading way. The first-tank temperature controlling and discharging grading method for producing sandy aluminium oxide through two-segment decomposition satisfies the requirement on improving the granularity and the strength of the finished product aluminium hydroxide, improves the quality of the finished product aluminium oxide, and also reduces the operation cost, and helps to create relatively good economic benefit for factories.

Fireproof and flame-retardant polymer material

Abstract: The invention discloses a fireproof and flame-retardant polymer material. The fireproof and flame-retardant polymer material is prepared from raw materials in parts by mass as follows: 30-40 parts of epoxy resin, 8-10 parts of asbestos, 5-7 parts of calcium carbonate, 11-16 parts of an acrylic emulsion, 11-14 parts of dimethylacetamide, 6-9 parts of ethyl acetate, 7-8 parts of magnesium stearate, 9-10 parts of magnesium hydrate, 6-8 parts of silica, 4-7 parts of aluminium hydroxide and 11-14 parts of dimethicone. The fireproof and flame-retardant polymer material is good in fireproof performance, high in flame retardance, high in strength, good in abrasion resistance, economical and environment-friendly.

Development of hemiacetal esterified levofloxacin to prevent chelation with metal-containing drugs.

Abstract: Objectives To avoid the chelate formation between levofloxacin (LVFX) and aluminium hydroxide in gastrointestinal tract, an ethoxycarbonyl 1-ethyl hemiacetal ester of levofloxacin (LVFX-EHE) was synthesised as a prodrug. Methods The effects of aluminium hydroxide on the bioavailability of LVFX following oral administration of LVFX-EHE were investigated in rats. Furthermore, the effects of aluminium hydroxide on small intestinal absorption of LVFX and LVFX-EHE when subjected to a hydrolysis experiment using in situ everted gut sac were investigated, and the minimal inhibitory concentrations (MICs) of LVFX and LVFX-EHE for various intestinal bacteria were measured. Key findings When LVFX-EHE was co-administered with and without aluminium hydroxide, the AUC0–4 h values of LVFX hydrolysed from LVFX-EHE were similar to that of LVFX alone. In everted gut sac experiments, LVFX-EHE was efficiently absorbed even in the presence of aluminium ions after 1 h of incubation, whereas the absorption of LVFX decreased significantly in the presence of aluminium ions. MIC values of LVFX-EHE were far higher than LVFX. Conclusions This study suggests the benefit of ethoxycarbonyl 1-ethyl hemiacetal esterification of the carboxyl group of new quinolone as a prodrug which is able to avoid chelate formation.

Preparation method of high-dispersion superfine aluminium hydroxide

Abstract: The invention provides a preparation method of high-dispersion superfine aluminium hydroxide. Superfine aluminium hydroxide is finally obtained by adding seed crystals and dispersion modifier at the same time at a certain reaction temperature with a sodium metaaluminate solution as the raw material, conducting stirring for a certain period of time, and conducting solid-liquid separation, washing, drying and dispersing on obtained pulp, wherein D50 is equal to 0.8-2 micrometers, and D100 is smaller than 10 micrometers. By means of the method, agglomeration of superfine aluminium hydroxide powder is effectively reduced, aggregate in finished products is reduced, the processing performance of high-dispersion superfine aluminium hydroxide is effectively improved, and the high-dispersion superfine aluminium hydroxide can be used for inflaming retarding or filling of wires, cables, rubber, plastic, papermaking, electric insulation and the like.

Microstucture and Heat Resistance of Coated Yellow Iron Oxide Pigment

Abstract: Poor heat resistance of iron oxide yellow pigment limits its application in plastics processing and coil coatings. Yellow iron oxide pigments coating with aluminum hydroxide were synthesized by a precipitation method using yellow iron oxide as precursor. Structure of the composite pigment is characterized using XRD, FT-IR, TG-DTA, SEM-EDS, and TEM. The effect of pH on structure and heat resistance of the pigments was investigated. All results show that iron oxide yellow coating layer is amorphous aluminum hydroxide when pH is 4. When pH increases to 6, 8 and 10, the surface coating layer is boehmite phase. The heat resistance of coated yellow iron oxide pigments is greatly improved, and the color difference value of pigments after treatment at 240 °C for 30 min is low, owing to the surface coating layer of boehmite structure. After coating, the iron oxides yellow maintains the original acicular structure, and pigment does not aggregate. When pH is 10, the coated iron oxides yellow composed both large stick and needle like structure, possibly because of the nucleation formation of AlOOH in the reaction process. This result may explain the special endothermic peaks of 246 °C appeared on the DTA curves. This research might provide theoretical and practical guidance for developing heat resistant yellow iron oxide pigments. 76 无 机 材 料 学 报 第 31卷

Method for preparing aluminium hydroxide by recovering polymeric aluminium chloride waste residue

Abstract: The invention relates to a method for preparing aluminium hydroxide by recovering polymeric aluminium chloride waste residue The method comprises the following steps: by adopting the PAC (Polymeric Aluminium Chloride) waste residue containing certain residual aluminium in the process of industrial production of the PAC as raw material, firstly, carrying out drying, calcining and acid-liquor leaching on the PAC waste residue in sequence under certain conditions; secondly, filtering and separating leached residue and leaching liquor, adding alkaline liquor into the filtrate to adjust pH to a certain value to remove impurities, separating impurity precipitates; thirdly, adding acid liquor into the filtrate obtained by impurity separation to adjust pH to a certain value to form suspension liquor of target precipitates; and finally, filtering, separating and washing the precipitates, and drying a filter cake to obtain an aluminium hydroxide product The method has the advantages that aluminium in the PAC waste residue is recycled, so that the emission of the PAC waste residue is reduced, the environmental pollution is reduced, wastes become valuables and high-efficiency utilization of the PAC waste residue is realized

Nickel-based catalyst carrier and preparation method and application thereof, and nickel-based catalyst and preparation method and application thereof

Abstract: The invention discloses a preparation method of a nickel-based catalyst carrier, a nickel-based catalyst carrier and its application in autothermal reforming of methane for preparation of synthesis gas, a nickel-based catalyst and its preparation method, an application of the nickel-based catalyst in autothermal reforming of methane for preparation of synthesis gas, and a method for preparation of synthesis gas by autothermal reforming of methane. The preparation method of the nickel-based catalyst carrier comprises the following steps: (1) allowing an aluminium salt aqueous solution to be contacted with a precipitating agent under the alkaline condition, aging, separating to obtain aluminium hydroxide hydrogel, and cleaning the aluminium hydroxide hydrogel respectively and successively with water and an alcohol solvent so as to obtain aluminium hydroxide alcogel; and (2) allowing the aluminium hydroxide alcogel to be contacted with a magnesium salt alcoholic solution under the ultrasonic condition, removing the solvent, drying and calcining to obtain an Mg-Al2O3 carrier. By the method for preparing the nickel-based catalyst, preparation cost can be reduced. In addition, the preparation method is simple to operate; conditions are easy to control; and the product has good repeatability.

Catalyst for hydro-skimming vacuum gas oil and preparation method thereof (versions)

Abstract: FIELD: chemistry.SUBSTANCE: invention relates to versions of supports of a catalyst for hydro-skimming vacuum gas oil. According to a first version, catalyst support contains 30-80 wt% aluminium oxide in form of boehmite or pseudo-boehmite and 20-70 wt% aluminium oxide, obtained by preliminary treatment of aluminium hydroxide with 1-7 % nitric acid solution at temperature of solution 5-10 °C and dried by spraying in a stream of hot air at temperature of 190-210 °C to produce particles, 80 % of which have size less than 45 mcm, wherein support has pore volume of 0.54-0.70 cm/g and coefficient of mechanical strength 2.6-3.5 kg/mm. Invention also relates to a second version of a catalyst support, wherein 27.3-49.6 wt% aluminium oxide and 2.7-31.4 wt% silicon oxide are contained in form of mesoporous aluminosilicate with weight ratio of SiO:AlO= 0.1:0.65, wherein support contains: aluminium oxide 68.6-97.3 wt%, silicon oxide 2.7-31.4 wt%, has pore volume of 0.57-1.02 cm/g and coefficient of mechanical strength 2.7-4.0 kg/mm. Invention also relates to methods (versions) of making a catalyst for hydro-skimming vacuum gas oil.EFFECT: technical result consists in improvement of mechanical strength and pore volume of support, sufficient for application by impregnation from 25 to 35 wt% active components of catalyst, which provides during hydro-skimming vacuum gas oil degree of conversion for sulphur of not less than 98 %, and nitrogen - not less than 80 %.4 cl, 1 tbl, 6 ex

Power cable for water conservancy and hydropower station

Abstract: The invention relates to a power cable for a water conservancy and hydropower station. The power cable comprises multiple copper alloy wires and protecting sleeves, wherein the copper alloy wires are arranged in a mutually-parallel manner; the outer layer of each copper alloy wire is coated with the corresponding protecting sleeve; the protecting sleeve comprises the following components: butyl rubber, polyisobutene, sodium allysulfonate, dodecyl phosphoric acid monoester, aluminium potassium sulfate dodecahydrate, 2, 2-dimethylolpropionic acid, bisphenol A type epoxy resin, carboxylated styrene butadiene modified emulsion, silica sol, lauryl sodium sulfate, chlorinated paraffin, pyromellitic dianhydride, benzothiazole, acrylic resin, barium sulfate, castor oil, silicon nitride powder, aluminium hydroxide powder, antimonous oxide powder, urea resin, dibasic lead phosphite, magnesium hydrate, triethylene glycol di-2-ethylhexoate, pyrithione zinc and melamine sodium phosphate. The cable is soft, durable, high-temperature resistant, safe and reliable, and high in radiating performance, so that the power cable can be used in quite severe environments.

Novel quartz mildew-resistant building material

Abstract: A novel quartz mildew-resistant building material comprises the following ingredients: aluminium hydroxide, quartz sand, silicon carbide, calcium oxide, mint, diesters of fumaric acid, zirconium dioxide and xanthan gum. The building material of the invention is green and environment friendly, has long service life and is mildew-resistant.

Catalyst for isomerisation of paraffin hydrocarbons and method of preparation thereof

Abstract: The catalyst comprises a platinum group metal supported on a carrier consisting of a mixture of aluminium oxide, zirconium oxide, and a sulphate ion or tungstate ion. Aluminium hydroxide, the aluminium oxide precursor, is pre-treated using only organic or inorganic acids with an acid module of 0.01-0.3, or in combination with at least one metal compound selected from the group consisting of: yttrium, magnesium, zinc, calcium, barium, cadmium, and strontium, to yield the catalyst wherein the percentage (by volume) of pores with a diameter of 5-8 nm constitutes more than 60% of the total pore volume. The technical result of the invention is the increased activity, selectivity and durability of the produced catalyst for isomerisation of hydrocarbons.

Low -speed aluminium oxide channelization dissolves out heat transfer device

Abstract: In order to reach the heating ore pulp, to promote the mesh that aluminium hydroxide dissolves out in the ore pulp, the utility model discloses a low -speed aluminium oxide channelization dissolves out heat transfer device, including outer tube (1) and inner tube (2), ore pulp in inner tube (2) inside and outside with intervascular heating medium with the opposite direction flow, the pipe wall of inner tube (2) is periodic irregular variable cross section form. Inner tube (2) according to actual need can be the single tube, also can be multicell form, nevertheless is the ripple inner tube. Adopt the utility model discloses an aluminium oxide channelization dissolves out heat transfer device, can obtain than traditional aluminium oxide channelization heat transfer device heat transfer effect 1.5-3 times high, has simultaneously effectually restrained the formation that intraductal ground paste scarred to have simple structure's characteristics, application that can be extensive is among the aluminium oxide engineering.

Method for preparing catalyst and catalyst for alkylation of isobutane with isobutene

Abstract: FIELD: chemistrySUBSTANCE: described is method for preparation of catalyst on the base of zeolite of NaNHY type with residual content of sodium oxide not higher than 08 wt %, which includes soaking while mixing zeolite crystals with lanthanum nitrate water solution in quantity, which provides content of lanthanum in zeolite 30 wt %, mixing formed suspension with second suspension, obtained by peptisation of nitric acid water solution to pH 1-3 of aluminium hydroxide powder, granulation of mould mass, re-oxidising at room temperature for 18-24 h, drying with temperature increase of 2 degrees per minute and exposure at 110±10°C for not less than 5 h and tempering with temperature increase of 10 degrees per minute and exposure at 280±10°C for not less than 4 h and at 510±10°C for not less than 4 hours; powders of zeolite and aluminium hydroxide of pseudoboehmite modification have particle size not less than 40 mcm, with additional introduction into mould mass with mixing of powder of sulphated tetragonal zircon dioxide with content 5 wt % of (SO) and with particles with size less than 40 mcm, as well as micro-needle wollastonite non-modified - natural calcium silicate CaSiOwith characteristic ratio l:d = (12-20):1 and length of microneedles 1<20 mcm, with the following weight ratio of components in mould mass, %: zoelite of NaNHY type - (2614-3068), lanthanum nitrate (190-222), aluminium hydroxide (pseudoboehmite) - (1488-1940), sulphated zircon oxide - (990-1461) and micro-needle wollastonite - natural calcium silicate CaSiO, nitric acid (044-057), water - to 100 Also described is catalyst, in which components are in weight ratio, %: zeolite of NaLaHY type - (49-55), aluminium oxide (22-30), sulphated zircon oxide (18-25), calcium silicate - (2-4)EFFECT: increased mechanical strength of granules with preservation of high indices of process - conversion of isobutene and selectivity by trimethylpentanes with increase of their stability2 cl, 1 tbl, 8 ex