Showing papers on "Sodium chlorate published in 2008"

Nanocrystalline alloys of the fe3al(ru) type and use thereof optionally in nanocrystalline form for making electrodes for sodium chlorate synthesis

Abstract: The invention relates to a nanocrystalline alloy of the formula Fe3-X Al1+X My Tz in which: M is at least one catalytic species selected from the group comprising Ru, Ir, Pd, Pt, Rh, Os, Re, Ag and Ni; T is at least one member selected from the group comprising Mo, Co, Cr, V, Cu, Zn, Nb, W, Zr, Y, Mn, Cb, Si, B, C, O, N, P, F, S, Cl and Na; x is a number higher than -1 and no higher than +1; y is a number higher than 0 and no higher than +1; z is a number between 0 and +1. The invention also relates to the use of the above alloy in a nanocrystalline form or not for making electrodes intended in particular for the synthesis of sodium chlorate.

Method for making positive material positive ferric phosphate of lithium battery

Abstract: The present invention discloses a preparation method for ferric orthophosphoric acid which is lithium battery anode material, using 100 portions of ferrous sulfate heptahydrate, 41.8-48.8 portions of phosphoric acid, 21.8-38.5 portions of hydrogen peroxide or 6.36-10.0 portions of sodium chlorate, 12.0-12.5 portions of sodium hydroxide or 15.0-18.0 portions of sodium carbonate and 500-1000 portions of water for preparation. The ferrous sulfate heptahydrate, the phosphoric acid and the water are compounded into solution in a reaction vessel; the hydrogen peroxide or the sodium chlorate is added into the solution; the temperature of the solution is 50-55 DEG C, and the sodium hydroxide or the sodium carbonate is added into the solution under the condition of stirring; then the solution temperature is increased to be between 85 DEG C and 95 DEG C; the temperature is kept for 5-15 hours, and in the meantime, the solution is led into a swirler to be separated till the sulfate radical content in products is less than 0.2 percent; the solution is cooled to be at 50 DEG C for carrying out the solid-liquid separation of the products and liquid; the particle diameter of obtained ferric orthophosphoric acid is 1-2 mu m; the specific surface area of the ferric orthophosphoric acid is 48-55.5m2/g; the tap density of the ferric orthophosphoric acid is greater than 1.6g/cm3. When the ferric orthophosphoric acid prepared with the method is used as raw material for preparing lithium iron phosphate via solid phase synthesis, the lithium battery anode material with excellent performance can be obtained.

Recovery of Aurum from Waste Printed Circuit Boards

Abstract: Recovery of gold from waste printed circuit boards(PCBs) with HCl and NaClO3 solution was studied.The influence of concentration of hydrochloric acid,amount of sodium chlorate,solid-liquid ratio and reaction time was investigated.Results indicated that it was unfavorable for recovering rate of gold when acidity was too high or too low.For 5g waste material,under the condition of solid-liquid ratio of 1:8,sodium chlorate 4g,hydrochloric acid 3mol/L and reaction time 1h,the recovering rate of gold could reach above 90%,with no toxicity for reagents,cheap simple equipment and easy operation.No toxicant was produced during the reaction.

Pickle liquor additive agent for special steel surface and method of preparing the same

Abstract: An additive and the preparing way for the addative of a surface pickler for a special steel is provided. The portions of raw materials and weight for the additive are: Diethylenetriamine 5-9 portions, chromized reducer 12-18 portions, detergent 20-24 portions, Nitrilotriacetic acid or HEDP 7-9 portions, potassium chlorate or sodium chlorate 7-12 portions, clean tap water 49-32 portions; the chromized reducer comprises Triethanolamine, formaldehyde and aqueous ammonia. The producing way for the additive is: first the tap water is put into a reaction vessel; then the potassium chlorate or sodium chlorate is added to react for about 10 min; the Nitrilotriacetic acid or HEDP is added to react evenly; the detergent and the Diethylenetriamine are added, and mixed evenly; then the chromized reducer is added and mixed to become a thick colorless liquid. The additive will be added in 1% of volume of aqua regia or mixed acid working liquid; when the temperature of the pickling work fluid rises to 60-80 centigrade, the rate for suppressing acid mist is more than 80%, the corrosion-retarding rate is more than 95%; the eight processes, namely prickling, degreasing, dephosphorizing, passivating and protection, etc. are completed in one operation. The additive can completely substitute highly toxic hydrofluoric acid and can passivate and protect jobs without passing through any acid, can greatly improve the surface roughness and corrosion resistance up to 3 times.

Perchlorate removal from concentrated salt solutions using amphoteric ion-exchange resins

Abstract: A process for reducing the concentration of perchlorate in an aqueous concentrated multi-component salt solution comprising treating the salt solution with an amphoteric ion-exchange resin to provide an adsorbed perchlorate and multi anion-containing resin and a perchlorate depleted solution; and removing the perchlorate depleted solution. The multi-anion are selected from chloride, chlorate, perchlorate, sulphate, and dichromate, present in electrolytic processes for the production of sodium chlorate.

Stable chlorine dioxide combination premixed liquid used for production and preparation thereof

Abstract: Disclosed are a stable premix of chlorine dioxide composition in production and a process for preparation thereof, which are used to resolve the problem of stability of raw material. The technical scheme of the stable premix is that the premix is composed of water of 50-70, alkali metal chlorate of 70-90, pH value regulator of 0.5-1, hydrogen peroxide of 50-75 with concentration of 30% and stabilizer of 1-2 by weight unit, wherein the alkali metal chlorate is one or mixture of sodium chlorate, potassium chlorate and barium chlorate, the pH value regulator is one or mixture of sulfuric acid and hydrochloric acid, and the stabilizer is one or mixture of polyacrylic acid, acrylic acid, hydrofluoric acid and potassium fluoride. The premix and the process have the advantages that a, components are less in a formulation, the process is simple, raw material is broad in source with low cost, b, the premix do not contain phosphorus, thereby resulting in no pollution source, c, stability is strong, and the storage time is long, thereby benefiting the storage and transportation of the raw material.

Production and Analysis of Chlorine Dioxide

Abstract: After performing this experiment, the student shall be able to: Produce a relatively uncommon, environmentally friendly, oxidizing and disinfecting gas. Visualize an application of Frost diagrams. Perform a disproportionation reaction. Produce the same substance by different paths (i.e., oxidation, reduction and disproportionation).

Closed loop, fuel cell powered production of sodium chlorate

Abstract: A sodium chlorate electrolysis cell (9) receives a portion of its electrical power (47, 48; 50, 51) from a phosphoric acid fuel cell (45) which receives fuel at its anode inlet (43) from a water cooled catalytic reactor (26) that converts oxygen in the byproduct output (21) of the sodium chlorate electrolysis cell to hydrogen and water. A utility grid (53) may provide through a converter (55) power to support the electrochemical process in the sodium chlorate electrolysis cell. Temperature of the water cooled catalytic reactor is determined by the vaporization of pressurized hot water, the pressure of which may be adjusted by a controller (36) and a valve (38) in response to temperature (40).

Pickling solution for metal without generation of nox and pickling method for use in the same

Abstract: An agent for removing oxide of an environmental friendly metal without generation of nitrogen oxide and a method for removing oxides using the same are provided to improve a pickling characteristic thereof by using sodium chlorate or potassium chlorate instead of hydrogen peroxide. An oxide removing agent comprises at least one acid element selected from the group consisting of hydrofluoric acid, sulfuric acid, hydrochloric acid and organic acid, and one of chloric acid selected from the group consisting of sodium chlorate and potassium chlorate. The oxide removing agent comprises about 2 to 30volume% of at least one acid element selected from hydrofluoric acid, sulfuric acid, hydrochloric acid and organic acid, and about 3 to 40volume% of chloric acid, and about 20 to 95volume% of solvent. The chloric acid includes one of sodium chlorate and potassium chlorate. The solvent includes water.

Insecticide for killing scutica of fishes

Abstract: An insecticide for killing scutica of fishes is provided to minimize stress of the fishes and maximize the killing efficiency by comprising hydrogen peroxide, sodium chlorate and a quaternary ammonium compound in a mixture form An insecticide for killing scutica of fishes comprises hydrogen peroxide as a main ingredient, 1-3 wt% of sodium chlorate and 1-3 wt% of a quaternary ammonium compound such as benzalkonium chloride A method for killing the scutica of fishes comprises a step of treating the fishes with the insecticide having a concentration of 30-70 ppm

Apparatus including sodium chlorate electrolysis cell connected by water cooled catalytic reactor to phosphoric acid fuel cell

Abstract: A sodium chloride electrolysis cell ( 9 ) receives a portion of its electrical power ( 47, 48: 50, 51 ) from a phosphoric acid fuel cell ( 44 ) which receives fuel at its anode inlet ( 43 ) from a water cooled catalytic reactor ( 26 ) that converts oxygen in the byproduct output ( 19 ) of the sodium chlorate electrolysis cell to hydrogen and water. A utility grid ( 53 ) may provide through a converter ( 55 ) power to support the electrochemical process in the sodium chlorate electrolysis cell. Temperature of the water cooled catalytic reactor is determined by the vaporization of pressurized hot water, the pressure of which may be adjusted by a controller ( 36 ) and a valve ( 38 ) in response to temperature ( 40 ).

Stable chlorine dioxide combination premixed liquid used for production and preparation thereof

Abstract: Disclosed are a stable premix of chlorine dioxide composition in production and a process for preparation thereof, which are used to resolve the problem of stability of raw material. The technical scheme of the stable premix is that the premix is composed of water of 50-70, alkali metal chlorate of 70-90, pH value regulator of 0.5-1, hydrogen peroxide of 50-75 with concentration of 30% and stabilizer of 1-2 by weight unit, wherein the alkali metal chlorate is one or mixture of sodium chlorate, potassium chlorate and barium chlorate, the pH value regulator is one or mixture of sulfuric acid and hydrochloric acid, and the stabilizer is one or mixture of polyacrylic acid, acrylic acid, hydrofluoric acid and potassium fluoride. The premix and the process have the advantages that a, components are less in a formulation, the process is simple, raw material is broad in source with low cost, b, the premix do not contain phosphorus, thereby resulting in no pollution source, c, stability is strong, and the storage time is long, thereby benefiting the storage and transportation of the raw material.