Sulfation binary metallic oxide solid acid catalyst and preparation method and application thereof

A solid acid catalyst and binary metal technology, which is applied in the preparation of organic compounds, chemical instruments and methods, organic chemistry, etc., can solve the problems of low conversion rate of reaction raw materials and product selectivity, long reaction path, short catalyst life, etc. , to achieve the effects of low production cost, high selectivity, and low equipment corrosion

Inactive Publication Date: 2019-08-09
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Using methanol and formaldehyde solution as raw materials to synthesize polyoxymethylene dimethyl ether, the cost of raw materials is relatively low, but there are disadvantages such as long reaction path, generally low conversion rate of reaction raw materials and product selectivity, and short catalyst life.

Method used

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  • Sulfation binary metallic oxide solid acid catalyst and preparation method and application thereof
  • Sulfation binary metallic oxide solid acid catalyst and preparation method and application thereof
  • Sulfation binary metallic oxide solid acid catalyst and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040] 0.1mol Fe(NO 3 ) 3 9H 2 O and 0.4mol Zn(NO 3 ) 2 ·6H 2 O was added to 500mL deionized water, heated and stirred in a water bath at 60°C for 30min to dissolve, and then 10% NH 3 ·H 2 O adjust the pH to 8, continue to stir the resulting solution in a water bath at 60°C for 2h, age at room temperature for 4h, filter the precipitate, wash the precipitate with deionized water until the washing liquid is neutral, and place the precipitate in an oven at 100°C Dry in medium for 12 hours to obtain the hydroxide precursor; grind the hydroxide precursor into particles with a particle size of 40-80 mesh, soak the particles in 1.0mol / L sulfuric acid solution and stir for 3 hours (1g powder corresponds to 10ml sulfuric acid solution) , filtered and dried at 100°C for 12 hours, placed in a muffle furnace at 500°C for 5 hours to obtain a sulfated binary metal oxide solid acid catalyst. The catalyst is SO 4 2- / Fe 2 o 3 -8ZnO. figure 1 For the sulfated binary metal oxide sol...

Embodiment 2

[0044] 0.167mol Fe(NO 3 ) 3 9H 2 O and 0.333mol Zn(NO 3 ) 2 ·6H 2 O was added to 500mL deionized water, heated and stirred in a water bath at 60°C for 30min to dissolve, and then 10% NH 3 ·H 2 O adjust the pH to 8, continue to stir the resulting solution in a water bath at 60°C for 2h, age at room temperature for 4h, filter the precipitate, wash the precipitate with deionized water until the washing liquid is neutral, and place the precipitate in an oven at 100°C dry in medium for 12 hours to obtain the hydroxide precursor; grind the hydroxide precursor to particles with a particle size of 40-80 mesh, immerse the particles in 1.0mol / L sulfuric acid solution and stir for 3 hours (1g powder corresponds to 10ml sulfuric acid solution), After filtering, it was dried at 100° C. for 12 hours, placed in a muffle furnace and calcined at 500° C. for 5 hours to obtain a sulfated binary metal oxide solid acid catalyst. The catalyst is SO 4 2- / Fe 2 o 3 -4ZnO. figure 2 For th...

Embodiment 3

[0048] According to the metal atom molar ratio Fe:Zn=1:1, 0.25mol Fe(NO 3 ) 3 9H 2 O and 0.25mol Zn(NO 3 ) 2 ·6H 2 O was added to 500mL deionized water, heated and stirred in a water bath at 60°C for 30min to dissolve, and then 10% NH 3 ·H 2 O adjust the pH to 8, continue to stir the resulting solution in a water bath at 60°C for 2h, age at room temperature for 4h, filter the precipitate, wash the precipitate with deionized water until the washing liquid is neutral, and place the precipitate in an oven at 100°C Dry in medium for 12 hours to obtain the hydroxide precursor; grind the hydroxide precursor into particles with a particle size of 40-80 mesh, soak the particles in 1.0mol / L sulfuric acid solution and stir for 3 hours (1g powder corresponds to 10ml sulfuric acid solution) , filtered and dried at 100°C for 12 hours, placed in a muffle furnace at 500°C for 5 hours to obtain a sulfated binary metal oxide solid acid catalyst. The catalyst is SO 4 2- / Fe 2 o 3 -2Z...

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Abstract

The invention discloses a sulfation binary metallic oxide solid acid catalyst. The composition components are iron oxide, zinc oxide and sulfation oxide; the sulfation oxide comprises sulfation iron oxide or sulfation zinc oxide. The raw materials used for the sulfation binary metallic oxide solid acid catalyst are simple and easy to obtain, the production cost is low, the preparation process is simple, and the corrosivity to equipment is low; under the condition of high water content, the catalytic activity for polyoxymethylene dimethyl ether synthesis through methyl alcohol and formaldehydeis high, the conversion rate of the reactant methyl alcohol is high, the selectivity for the product PODE 3-5 is high, and the stability of the catalyst is high; under the optimal reaction condition,the conversion rate of methyl alcohol in a reaction raw material is 54.96%, and the selectivity for the PODE 3-5 is 28.18%.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation, and in particular relates to a sulfated binary metal oxide solid acid catalyst and its preparation method and application. Background technique [0002] With the rapid development of economy, our country is facing the huge challenge of environmental protection and energy demand. Air pollution is particularly prominent among environmental pollution issues, and issues such as PM10, PM2.5, AQI, and smog have attracted people's attention. Therefore, it is of great significance to study how to improve the combustion efficiency of motor vehicle fuel and reduce the pollution of motor vehicle exhaust to the environment. Diesel is currently the most consumed power fuel in my country, and diesel engines have problems such as incomplete combustion and pollutant emissions. An effective way to solve these problems is to add oxygenated fuel to diesel to improve the quality of diesel or directly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/053C07C41/56C07C43/30
CPCB01J27/053C07C41/56C07C43/30
Inventor 刘殿华张武杰李向俊曹建成潘佳浩
Owner EAST CHINA UNIV OF SCI & TECH
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