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Aluminium hydroxide

About: Aluminium hydroxide is a research topic. Over the lifetime, 2043 publications have been published within this topic receiving 22032 citations. The topic is also known as: Al(OH)3 & Amphojel.


Papers
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Journal ArticleDOI
TL;DR: In this article , three novel adsorbents were characterized by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) analysis and Xray photoelectron spectroscopic (XPS).
Abstract: In this study, raw attapulgite and two aluminium hydroxide-modified attapulgites prepared using different aluminium salts were calcined at 600 °C to successfully prepare three novel adsorbents (C-ATP, C-ATP-SO42− and C-ATP-Cl−). The three adsorbents were characterized by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET) analysis and X-ray photoelectron spectroscopy (XPS). Batch experiments revealed that the Cd(ii) adsorption capacity of the three adsorbents increased with increasing pH, increasing the initial concentration of Cd(ii) in solution, and with longer adsorption times. The order of adsorption capacity was always C-ATP > C-ATP-Cl− > C-ATP-SO42−. C-ATP and C-ATP-Cl− were better described by the Langmuir model, while C-ATP-SO42− was better described by the Freundlich model. The three adsorbents reached adsorption equilibrium within 2 h, and all followed pseudo-second order kinetics. The adsorption of Cd(ii) onto the three adsorbents was physisorption, as suggested by the calculated thermodynamic parameters. Although the adsorption of Cd(ii) on C-ATP and C-ATP-Cl− was exothermic, the adsorption on C-ATP-SO42− was endothermic. Ion exchange and cadmium precipitation were the primary mechanisms of cadmium adsorption on the three adsorbents analysed by XPS. The presence of SO42− in C-ATP-SO42− may result in weaker binding of Cd(ii) by the adsorbent than C-ATP-Cl−.

4 citations

Patent
19 May 1999
TL;DR: In this paper, a method of producing an aggregating agent for better environment is provided, which is characterized in the aggregating agents can make dried powder with wastewater containing heavy metals and paint and leachate by using adsorption and make biodegradable.
Abstract: PURPOSE: A method of producing an aggregating agent for better environment is provided, which is characterized in the aggregating agent can make dried powder with wastewater containing heavy metals and paint and leachate by using adsorption and make biodegradable. CONSTITUTION: A method of producing an aggregating agent for better environment proceeds to the following steps: a mixing process with 0.01-20wt% of spiculisporic acid derivatives and 0.01-20wt% of absorbent polymers; and a coating process for the surface of metal-oxides or hydroxides with the mixed liquid. The metal-oxides are such as zinc oxide, aluminium oxide, potassium oxide, titanium oxide and iron oxide and the hydroxides are such as calcium hydroxide, aluminium hydroxide, zinc hydroxide and magnesium hydroxide. The absorbent polymers are a sort out of poly acrylic acid or sodium displacers, poly meta acrylic polymers and polymers of anhydrous malein acid and acrylic acid.

4 citations

Patent
08 Dec 2004
TL;DR: An aluminium hydroxide particle containing Si and P dispersed on its surface is disclosed, which can be used for hydrorefining the fractional oil or preparing the hydrocatalyst as mentioned in this paper.
Abstract: An aluminium hydroxide particle containing Si and P dispersed on its surface is disclosed, which can be used for hydrorefining the fractional oil or preparing the hydrocatalyst. It is prepared by introducing the cheap Si-contained compound and P-contained compound in the process for preparing the alpha-AlO(OH) type aluminium hydroxide by Co2 method step by step. Its advantages are excellent physical and chemical properties, large pore volume and specific surface area, proper, surface acidity and better peptization.

4 citations

Patent
15 Jan 1998
TL;DR: In this paper, the use of a novel aluminium hydroxide which is described by the molecular representation: Al2O3·nH2O where n>2.6 and <2.9.
Abstract: Printed circuit board laminates which have improved thermal stability. The improved properties are attributed to the use of a novel aluminium hydroxide which is described by the molecular representation: Al2O3·nH2O where n>2.6 and <2.9.

4 citations

Patent
26 Oct 2005
TL;DR: In this paper, a method for producing aluminium sodium sulfate (AlNa(SO4)2.xH2O) by utilizing sodium aluminate concentrate solution is presented.
Abstract: The method for producing aluminium sodium sulfate (AlNa(SO4)2.xH2O) by utilizing sodium aluminate concentrate solution. Said method includes the following steps: firstly, according to the concentration of NaOH, Al2O3, Na2CO3 and Na2SO4 in the soduim aluminate countrate solution and molecular composition of sodium sulfate calculating the demand of sulfuric acid and aluminium sulfate, then according to the quantity of aluminium sulfate calculating the demand of sulfuric acid and aluminium hydroxide required for preparing aluminium sulfate, then mixing all the required sulfuric acid and aluminium hydroxide to obtain aluminium sulfate, then making the sodium aluminate, sulfuric acid and aluminium sulfate mixed liquor be mixed and reacted to obtain aluminium sodium sulfate solution, then successively making said solution undergo the processes of filtering, crystallization and separation so as to obtain the invented product.

4 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20234
202222
202123
202031
201936
201863