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Hydrolyst, preparation method thereof and method for preparing butanedial

A technology for hydrolyzing catalysts and clay layers, which is applied in the field of catalysis, can solve the problems of high comprehensive cost of succinic dialdehyde raw materials, reduction of succinic dialdehyde yield, high cost of succinic dialdehyde, etc., to achieve market expansion and use, application prospects and Wide potential and the effect of increasing hydrolysis yield

Inactive Publication Date: 2016-04-06
ZHONGSHAN POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The raw material cost of 2,5-dimethoxytetraoxyfuran is high, and the current price is not less than 300 yuan / kg, which makes the cost of the hydrolyzed product succinic dialdehyde very expensive
On the other hand, the post-processing of the traditional hydrolysis reaction process is quite difficult, and the process is complicated and numerous, which further reduces the yield of succinic dialdehyde, which directly leads to a more expensive comprehensive cost of raw materials for succinic dialdehyde (it is estimated to be as high as 500 yuan / kg).

Method used

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  • Hydrolyst, preparation method thereof and method for preparing butanedial
  • Hydrolyst, preparation method thereof and method for preparing butanedial

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The hydrolysis catalyst was prepared according to the following steps:

[0049] (1) Add 1 part of AlCl 3Stir well and completely dissolve in 20 parts of triethanolamine to prepare a precursor solution;

[0050] (2) Disperse 30 parts of Na-based montmorillonite (produced by Zhejiang Fenghong New Material Co., Ltd., its purity is as high as 99%, the same below) in 90 parts of water to prepare a clay suspension, and the precursor prepared in (1) The body solution and the clay suspension are fully mixed evenly;

[0051] (3) The reaction liquid obtained in step (2) is filtered, and the filter cake is fully washed, and the filter cake is fully dried at 80~120°C, taken out, and ground to make the particle size not less than 2000 mesh to obtain a powder;

[0052] (4) 1.5 parts (NH 4 ) 2 SO 4 Add 0.3 parts of cetyltrimethylammonium bromide into 7.5 parts of water, stir until completely dissolved and mix well, then put in the powder prepared in (3), and fully dry at 100-150°...

Embodiment 2

[0054] The hydrolysis catalyst was prepared according to the following steps:

[0055] (1) Add 0.5 parts of AlCl 3 and 0.5 parts FeCl 3 Stir well and completely dissolve in 50 parts of triethanolamine to prepare a precursor solution;

[0056] (2) Disperse 5 parts of Na-based montmorillonite and 5 parts of Na-based bentonite (produced by Zhejiang Fenghong New Material Co., Ltd., the former has a purity of 99% and the latter has a purity of 83%, the same below) in 100 parts of water to prepare clay Suspension, and (1) fully mix the prepared precursor solution and clay suspension;

[0057] (3) The reaction liquid obtained in step (2) is filtered, and the filter cake is fully washed, and the filter cake is fully dried at 80~120°C, taken out, and ground to make the particle size not less than 2000 mesh to obtain a powder;

[0058] (4) 2 parts (NH 4 ) 2 SO 4 Add 0.1 part of cetyltrimethylammonium bromide and 0.1 part of octadecyltrimethylammonium bromide into 60 parts of water...

Embodiment 3

[0060] The hydrolysis catalyst was prepared according to the following steps:

[0061] (1) Add 0.5 parts of AlCl 3 , 0.2 parts of FeCl 3 and 0.2 parts TiCl 4 Stir well and completely dissolve in 27 parts of triethanolamine to prepare a precursor solution;

[0062] (2) Prepared by dispersing 5 parts of Na-based montmorillonite, 2 parts of Na-based bentonite and 5 parts of Na-based hectorite (produced by Nanjing Hemingsi New Material Co., Ltd., with a purity of up to 99%, the same below) in 60 parts of water Clay suspension, and (1) fully mix the prepared precursor solution and clay suspension;

[0063] (3) The reaction liquid obtained in step (2) is filtered, and the filter cake is fully washed, and the filter cake is fully dried at 80~120°C, taken out, and ground to make the particle size not less than 2000 mesh to obtain a powder;

[0064] (4) 1.6 parts (NH 4 ) 2 SO 4 , 0.1 part of cetyltrimethylammonium bromide, 0.05 part of cetyltrimethylammonium chloride and 0.05 pa...

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Abstract

The invention belongs to the technical field of catalysis, and discloses hydrolyst. According to the hydrolyst, a clay interlayer structure doped with polyvalent metal ions serves as the framework, the framework is loaded with SO42-, and the clay interlayer structure contains quaternary ammonium salt. The invention further discloses a preparation method of the hydrolyst, and a method for preparing butanedial through the hydrolyst. The hydrolyst is solid superacid with clay loaded with SO42-, is high in catalytic efficiency and can remarkably improve the hydrolytic yield of butanedial and shorten reaction time, the hydrolytic activity of 2,5-dimethoxy tetraoxyfuran is better than that of commonly-used hydrochloric acid, sulfuric acid and the like, the hydrolyst is quite easy to recycle, the hydrolytic reaction conditions are mild, production cost is low, and the hydrolyst is more green and environmentally friendly, can replace high-pollution and high-danger liquid acid catalysts such as commonly-used hydrochloric acid, sulfuric acid and phosphoric acid, and is quite wide in application prospects and potential.

Description

technical field [0001] The invention belongs to the technical field of catalysis, relates to a hydrolysis catalyst and a preparation method thereof, and also relates to a method for preparing succinaldehyde with the hydrolysis catalyst. Background technique [0002] Cyclopyrid is a new neonicotinoid insecticide with independent intellectual property rights invented by East China University of Science and Technology. It has high chemical activity against imidacloprid-resistant pests and has a good control effect on Lepidoptera pests. In 2011, East China University of Science and Technology transferred the patented technology of Cyclopyrid to Shanghai Shengnong Biochemical Products Co., Ltd., and then East China University of Science and Technology, Shanghai Shengnong Biochemical Products Co., Ltd. cooperated with FMC Corporation of the United States for industrial development. [0003] The independent development of cycloxaprid shows that my country has the ability to indepen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/38C07C45/59C07C47/12
CPCY02P20/584B01J31/38B01J2231/48C07C45/59C07C47/12
Inventor 李吉昌聂建华韩淑琴刘洋黎萍
Owner ZHONGSHAN POLYTECHNIC
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