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Preparation method of aluminum sesquioxide/titanium dioxide composite adsorption material

A composite adsorption material, aluminum oxide technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problems of low removal efficiency, low adsorption capacity, etc., to improve adsorption capacity and removal The effect of efficiency

Inactive Publication Date: 2019-06-14
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method of aluminum oxide / titania composite adsorption material, which solves the problems of low removal efficiency and low adsorption capacity of existing composite adsorption materials

Method used

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  • Preparation method of aluminum sesquioxide/titanium dioxide composite adsorption material
  • Preparation method of aluminum sesquioxide/titanium dioxide composite adsorption material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A kind of aluminum oxide / titanium dioxide (Al 2 o 3 / TiO 2 ) The preparation method of composite adsorption material, concretely implement according to the following steps:

[0039] Step 1, prepare stable and transparent Al 2 o 3 Sol, specifically:

[0040] Heat the pure water to 75°C with a heat-collecting constant temperature magnetic stirrer, then add aluminum isopropoxide into the pure water, and stir at a speed of 15r / s for 1h to fully hydrolyze it to obtain a reaction solution, and use a constant pressure funnel to 1.0mol / L HNO 3 Add it to the reaction solution at a drop rate of 0.05mL / s, stir and reflux at 80°C for 7.0h, the stirring rate is 15r / s, and cool to room temperature to obtain a stable and transparent Al 2 o 3 Sol;

[0041] Among them, the molar ratio of aluminum isopropoxide (AIP), pure water, and nitric acid is 1:80:0.15;

[0042] Step 2, preparation of transparent TiO 2 Sol, specifically:

[0043] Add butyl titanate to absolute ethanol, an...

Embodiment 2

[0049] A kind of aluminum oxide / titanium dioxide (Al 2 o 3 / TiO 2 ) The preparation method of composite adsorption material, concretely implement according to the following steps:

[0050] Step 1, prepare stable and transparent Al 2 o 3 Sol, specifically:

[0051] Heat the pure water to 80°C with a heat-collecting constant temperature magnetic stirrer, then add aluminum isopropoxide into the pure water, and stir at a speed of 17r / s for 2 hours to fully hydrolyze it to obtain a reaction solution, and use a constant pressure funnel to 2mol / L HNO 3 Add it to the reaction solution at a drop rate of 0.1mL / s, stir and reflux at 85°C for 8h at a stirring rate of 17r / s, and cool to room temperature to obtain a stable and transparent Al 2 o 3 Sol;

[0052] Among them, the molar ratio of aluminum isopropoxide (AIP), pure water, and nitric acid is 1:120:0.25;

[0053] Step 2, preparation of transparent TiO 2 Sol, specifically:

[0054] Add butyl titanate to absolute ethanol, a...

Embodiment 3

[0060] A kind of aluminum oxide / titanium dioxide (Al 2 o 3 / TiO 2 ) The preparation method of composite adsorption material, concretely implement according to the following steps:

[0061] Step 1, prepare stable and transparent Al 2 o 3 Sol, specifically:

[0062] Heat the pure water to 85°C with a heat-collecting constant temperature magnetic stirrer, then add aluminum isopropoxide into the pure water, and stir it at a speed of 20r / s for 1 hour to fully hydrolyze it to obtain a reaction solution, and use a constant pressure funnel to 4mol / L HNO 3 Add it to the reaction solution at a drop rate of 0.15mL / s, stir and reflux at 90°C for 7h, the stirring rate is 20r / s, and cool to room temperature to obtain a stable and transparent Al 2 o 3 Sol;

[0063] Among them, the molar ratio of aluminum isopropoxide (AIP), pure water, and nitric acid is 1:160:0.45;

[0064] Step 2, preparation of transparent TiO 2 Sol, specifically:

[0065] Add butyl titanate to absolute ethanol...

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Abstract

The invention discloses a preparation method of an aluminum sesquioxide / titanium dioxide composite adsorption material. The preparation method comprises the following specific steps: firstly, stabilizing transparent Al2O3 sol and TiO2 sol; secondly, adding the TiO2 sol into a mixed solution of the Al2O3 sol and absolute ethanol, and stirring a mixture to obtain Al2O3 / TiO2 composite adsorption sol;thirdly, performing vacuum drying on the Al2O3 / TiO2 composite adsorption sol, grinding, calcining, and cooling to room temperature to obtain the Al2O3 / TiO2 composite adsorption material. By preparingthe Al2O3 / TiO2 composite adsorption material with a sol-sol method, the adsorption capacity and removal efficiency of an existing aluminum sesquioxide / titanium dioxide composite adsorption material on printing and dyeing wastewater are improved.

Description

technical field [0001] The invention belongs to the technical field of adsorption material preparation, and in particular relates to a preparation method of aluminum oxide / titanium dioxide composite adsorption material. Background technique [0002] In recent years, with the rapid development of economy and industry, a large amount of dye wastewater is directly discharged without reasonable treatment, which poses a serious threat to the water environment and human health due to its toxicity and even carcinogenicity. Water pollution by organic compounds has become one of the challenging environmental problems. Especially synthetic dyes are major water pollutants generated by textile dyeing, paper printing, color photography and petroleum industry, more precisely, 10-15% of synthetic dyes are released into water during textile dyeing. Various synthetic dyes such as azo dyes, polymer dyes, anthraquinone dyes, triphenylmethane dyes and heterocyclic dyes are used in textile dyei...

Claims

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Application Information

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IPC IPC(8): B01J20/08C02F1/28B01J20/30
Inventor 杨靖徐志润梁青
Owner XI'AN POLYTECHNIC UNIVERSITY
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