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Tungsten-containing super large mesoporous foam catalyst for synthesizing glutaraldehyde and manufacturing method thereof

A catalyst and glutaraldehyde technology, applied in molecular sieve catalysts, chemical instruments and methods, and the preparation of organic compounds, can solve the problems of less than 500 tons of production capacity, difficult separation of catalysts and products, and low yield of glutaraldehyde. Achieve the effects of improving efficiency, excellent catalytic performance, and simplifying the original homogeneous process

Inactive Publication Date: 2008-08-13
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the glutaraldehyde currently used in China is imported, and only a few units such as Wuhan Organic Chemical Factory use acrolein to produce it, with a total production capacity of less than 500 tons per year.
These catalysts are all very sensitive to water, need to operate in anhydrous system, and the yield of glutaraldehyde is all not high (less than 50%)
And because it involves anhydrous hydrogen peroxide, the operation is extremely dangerous, and basically has no industrial value
The homogeneous tungstic acid catalyst reported by Anren et al. has obtained the result that the conversion rate of cyclopentene is 100% and the yield of glutaraldehyde is greater than 70% (ZL89 109401.6). difficulty

Method used

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  • Tungsten-containing super large mesoporous foam catalyst for synthesizing glutaraldehyde and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1: In a 40°C oil bath, add 2.0g of P123 template agent to 75mL of 1.6mol / L hydrochloric acid solution, stir for 4 hours to fully dissolve P123, then add 2.0g of TMB expansion agent, continue stirring for 1 hour, and then add 4.4 g tetraethyl orthosilicate, when stirring for 1 h, add 3 mL of aqueous solution containing 0.161 g of sodium tungstate, and continue stirring for 24 h. It was crystallized at 100°C for 1 day, taken out, filtered, washed, dried, slowly heated to 500°C in air atmosphere, calcined for 8 hours, granulated, sieved with 40-60 mesh, and activated at 800°C for 3 hours to obtain 1# catalyst.

Embodiment 2

[0020] Example 2: In an oil bath at 40°C, add 2.0g of P123 template agent to 75mL of 1.6mol / L hydrochloric acid solution, stir for 4 hours to fully dissolve P123, then add 2.0g of TMB expansion agent, continue stirring for 1 hour, and then add 4.4 g tetraethyl orthosilicate, when stirring for 1 h, add 6.2 mL of aqueous solution containing 0.321 g of sodium tungstate, and continue stirring for 24 h. Remaining with example 1, be recorded as 2# catalyst.

Embodiment 3

[0021] Example 3: In an oil bath at 40°C, add 2.0g of P123 template agent to 75mL of 1.6mol / L hydrochloric acid solution, stir for 4 hours to fully dissolve P123, then add 2.0g of TMB expansion agent, continue stirring for 1 hour, and then add 4.4 g tetraethyl orthosilicate, when stirring for 1 h, add 10 mL of aqueous solution containing 0.482 g of sodium tungstate, and continue stirring for 24 h. Remaining with example 1, be recorded as 3# catalyst.

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Abstract

The present invention belongs to chemical technology field, in particular an ultra-large mesoporous foam catalyst containg tungsten mesoporou for synthetizing glutaric dialdehyde and preparing method. The catalyst is made by home position introducing tungsten oxide having catalytic oxidation activity to the frame of the foaming material MCF in the course of synthetizing fully silicon ultra-large mesoporous foam material MCF. The characteristics of the catalyst are wide diversification of activate component, the super high load of tungsten oxide and ultra-large three-dimensional continuum channel structure. The heterogeneous catalysts obtained by hone position synthetic method are used for catalyzing selecting oxidation reaction of cyclopentene, effectively improves the selectivity and yield of the glutaric dialdehyde, the value is far higher than the reported homogeneous catalysis level, having important industrial application value.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a catalyst for synthesizing glutaraldehyde by heterogeneous catalytic oxidation of cyclopentene and a manufacturing method thereof Background technique [0002] Glutaraldehyde is a very important chemical product, widely used as a disinfectant, a leather tanning agent, a fixative for optical and electron microscope tissue sections, a cross-linking agent for proteins and polyhydroxy compounds, and a micromicelle curing agent. , it is estimated that the total domestic demand for pure glutaraldehyde will reach 20,000 tons per year. Most of the glutaraldehyde currently used in China is imported, and only a few units such as Wuhan Organic Chemical Factory use acrolein to produce, with a total production capacity of less than 500 tons per year. All adopt acrolein two-step method synthetic glutaraldehyde (patent open 59-108734) on the industry now, because this me...

Claims

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Application Information

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IPC IPC(8): B01J29/035B01J23/30C07C47/12C07C45/34
CPCY02P20/50
Inventor 戴维林杨新丽高瑞华范康年
Owner FUDAN UNIV
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