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Method for preparing nanometer gahnite

A technology of aluminum spinel and nano-zinc, which is applied in the direction of nano-technology, zinc oxide/zinc hydroxide, etc., can solve the problems of poor product component uniformity and small specific surface area, shorten the production cycle, reduce the calcination temperature, and process Simple and stable effect

Active Publication Date: 2015-05-27
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method of nano-zinc-aluminum spinel, which solves the problems of poor product component uniformity and small specific surface area in the traditional synthesis method; Acid acidification, relatively economical and environmentally friendly

Method used

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  • Method for preparing nanometer gahnite

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Effect test

Embodiment 1

[0023] Dissolve 2009.4g of zinc nitrate in 1.8L of tap water, dissolve at 50°C, and stir for 10 minutes; add 1075.2g of macroporous pseudothin, and stir for 10 minutes; add 100g of polystyrene emulsion and 30g of polyethylene glycol as a pore-enlarging agent, and stir , aged at 85°C for 30 minutes, dried overnight at 80°C, and calcined at 650°C for 3 hours. A zinc-aluminum spinel sample A was obtained. Specific surface area 287m 2 / g, pore volume 1.1cc / g, particle size 27nm.

Embodiment 2

[0025] Dissolve 1694.2g of zinc nitrate in 1.3L of tap water, dissolve at 50°C, and stir for 10 minutes; add 906.2g of macroporous pseudothin, and stir for 10 minutes; add 60g of polystyrene emulsion as a pore-enlarging agent, stir, and age at 80°C for 60 Minutes, dried overnight at 80°C, and calcined at 650°C for 3 hours. Gained zinc-aluminum spinel sample B. Specific surface area 152m 2 / g, pore volume 0.72cc / g, particle size 26nm.

Embodiment 3

[0027] Dissolve 1489.3g of zinc sulfate in 2.8L of tap water, dissolve at 50°C, and stir for 10 minutes; add 752.6g of macroporous pseudothin, and stir for 10 minutes; add 70g of polyethylene glycol and 10g of glycerol as pore-enlarging agents, stir, and Aging at 80°C for 60 minutes, drying at 80°C overnight, and low-temperature calcination at 750°C for 1 hour. Gained zinc-aluminum spinel sample C. Specific surface area 197m 2 / g, pore volume 0.83cc / g, particle size 30nm.

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Abstract

A method for preparing nanometer gahnite. The preparation method is as below: dissolving zinc salt in water, adding an aluminum source, stirring for 10-30 min, adding a pore-enlarging agent, stirring, ageing at 20-100 DEG C for 30-60 min, drying, and calcining at 500-1200 DEG C. The molar ratio of the raw materials is as below: Zn:Al:water=1:2:16-35; calculated by the weight of zinc oxide being 100%, the addition amount of the pore-enlarging agent is 0.5-30%; and the pore-enlarging agent is one or more selected from sucrose, glycerol, ammonium carbonate, ammonium hydrogen carbonate, polystyrene latex and polyethylene glycol.

Description

technical field [0001] The invention relates to a method for preparing catalytic chemistry or nanometer materials, in particular to a method for preparing zinc-aluminum spinel nanometer powder. Background technique [0002] Spinel-type composite oxides are a class of promising inorganic non-metallic materials, which have a series of good properties and are widely used in high-temperature materials, semiconductor optoelectronic materials, sensors, catalysts and catalyst supports. The traditional methods of synthesizing spinel at home and abroad mainly include the following types. (1) Mechanochemical synthesis method. Also known as high-energy mechanical grinding method, through high-energy ball milling, different metal elements or metal oxides interact to form nanoscale compounds. However, the process equipment is complicated and the energy consumption is high. (2) Solid phase reaction method. Zinc oxide and alumina powders are mixed as raw materials for synthesizing zinc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G9/02B82Y40/00
Inventor 郑云锋孙书红高雄厚刘从华胡清勋蔡进军李荻黄校亮段宏昌李雪礼潘志爽丁伟谭争国杨一青张爱群
Owner PETROCHINA CO LTD
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