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Prepn and application of nano composite polyacid catalyst for eliminating gaseous aldehyde at normal temperature and normal pressure

A nano-composite and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as compatibility, feasibility, lack of feasibility, secondary pollution, etc. Wide applicability, simple method, easy to load effect

Inactive Publication Date: 2005-12-14
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The toxic gas elimination technology that is currently used mostly adopts physical adsorption (CN Patent: 1 405 560, 2003; 1386578, 2002; 1 386 576, 2002; US Patent: 6 596 909, 2003; ; 2004097374-A, 2004; 2004049297-A, 2004), after the material is used for a period of time, the adsorbed molecules will be saturated and need to be regenerated, and the process will inevitably cause secondary pollution problems
Photocatalysis (CN Patent: 1 405 560, 2003; 1 394 674, 2003) usually requires the use of high-energy ultraviolet light, and the ultraviolet light component in natural light is low. The use of ultraviolet light is not only costly, but also harmful to ordinary indoor environments. Lack of feasibility; or mixed into aldehyde-containing materials as an additive, but whether it is compatible and feasible is still a problem (CN Patent: 1 427 045, 2003; World Patent: 01 / 30900, 2001)

Method used

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  • Prepn and application of nano composite polyacid catalyst for eliminating gaseous aldehyde at normal temperature and normal pressure
  • Prepn and application of nano composite polyacid catalyst for eliminating gaseous aldehyde at normal temperature and normal pressure

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Silicon aminated SBA-15 loaded polyacid H 5 PMo 10 V 2 o 40 Preparation: Add 1g of SBA-15 into 30ml of toluene solution containing 1% APTS, stir and reflux for 5h, filter, wash with toluene, and dry at 95°C for 3 hours to obtain silicon-aminated SBA-15 (APTS / SBA-15 ). Add 1gAPTS / SBA-15 to 30ml containing H 5 PMo 10 V 2 o 40 1.0×10 -4 mol of methanol solution, stirred and refluxed for 8h, then filtered and washed, and dried at 95°C for 3 hours to obtain H 5 PMo 10 V 2 o 40 / APTS / SBA-15.

Embodiment 2

[0026] Silicon aminated MCM-41 loaded polyacid H 5 PMo 10 V 2 o 40 Preparation: Add 1 g of MCM-41 to 30 ml of toluene solution containing 1% APTS, stir and reflux for 5 hours, filter, wash with toluene, and dry at 95°C for 3 hours to obtain silicon-aminated MCM-41 (APTS / MCM-41 ). 1g APTS / MCM-41 add 30ml containing H 5 PMo 10 V 2 o 40 1.0×10 -3 mol of methanol solution, stirred and refluxed for 8h, then filtered and washed, and dried at 95°C for 3 hours to obtain H 5 PMo 10 V 2 o 40 / APTS / MCM-41.

Embodiment 3

[0028] Silicon aminated MCM-48 loaded polyacid H 5 PMo 10 V 2 o 40 Preparation: Add 1g of MCM-48 into 30ml of toluene solution containing 1% APTS, stir and reflux for 5h, filter, wash with toluene, and dry at 95°C for 3 hours to obtain silicon-aminated MCM-48 (APTS / MCM-48 ). Add 1g APTS / MCM-48 to 30ml containing H 5 PMo 10 V 2 o 40 1.0×10 -3 mol of methanol solution, stirred and refluxed for 8h, then filtered and washed, and dried at 95°C for 3 hours to obtain H 5 PMo 10 V 2 o 40 / APTS / MCM-48.

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Abstract

The present invention is one kind of catalyst for eliminating gaseous aldehydes at normal temperature and normal pressure and its preparation and application. In available technology, aldehydes are eliminated through adsorption, and this can not eliminating harmful gas radically and may have secondary pollution. The present invention prepares silica type mesoporous nanometer composite polyacid material with P-Mo-V heteropolyacid with mesoporous silica material and through surface amination modification, neutralization and other steps. The composite polyacid material is used as catalyst for oxidizing aldehydes in air into harmless CO2 at normal temperature and normal pressure to eliminate aldehydes radically. The catalyst may be used for long time without need of activation.

Description

technical field [0001] The invention relates to a preparation method and application of a multi-acid nanocomposite catalyst for eliminating aldehyde gases under normal temperature and pressure. Background technique [0002] Polyacid compounds have received extensive attention due to their acidity, oxidative properties and tunable catalytic performance [1-3] , some reactions using polyacids as catalysts have been industrialized; on the other hand, its advantage is that the mechanism of catalytic reactions can be better studied by changing the components of substituted polyacids. It is well known that vanadium compounds have significant effects in catalyzing some organic reactions, especially the oxidation ability. Under homogeneous conditions, the reaction of vanadium-containing polyacids to catalyze the oxidation decomposition of aldehydes, sulfides and mercaptans has been reported. [0003] Despite the above advantages, the specific surface area of ​​heteropoly acid is les...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/199
Inventor 岳斌周琰贺鹤勇江磊
Owner FUDAN UNIV