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Copper-based catalyst and application thereof

A technology of copper-based catalysts and systems, applied in the field of copper-based catalysts and their applications, can solve the problems of low catalytic efficiency and harsh catalytic conditions, and achieve the effects of mild catalytic conditions, high catalytic efficiency, and enlarged contact area

Inactive Publication Date: 2016-04-06
PURESCI ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is to provide a copper-based catalyst to solve the problems of low catalytic efficiency and harsh catalytic conditions in the prior art.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The preparation of embodiment 1 catalyst

[0029] Preparation:

[0030] (1) Dissolve anhydrous sodium metasilicate in dimethyl sulfoxide, pass hydrogen chloride gas into dimethyl sulfoxide under the condition of nitrogen protection, and react on a shaking table at 45° C. for 4 hours;

[0031] (2) Keep the nitrogen protection condition, add copper chloride to the mixed system obtained in step (1), and react for 1 h at 40° C. on a shaker;

[0032] (3) Add polyacrylamide to the mixed system obtained in step (2), fully mix, and get the gel after the sol is complete;

[0033] (4) Rinse the gel obtained in step (3) with deionized water for 2 to 3 times, dry with sodium sulfite, and finally bake at 700°C for 1 hour to obtain a copper-based catalyst.

[0034] In steps (1)-(3), the reagents used are all anhydroused.

[0035] In step (1), the weight ratio of anhydrous sodium metasilicate to organic solvent is 1:100.

[0036] In step (1), the molar ratio of anhydrous sodium me...

Embodiment 2

[0044] The copper-based catalysts prepared in Example 1, Comparative Example 1 and Comparative Example 2 were used to catalyze the reaction of ethanol and oxygen. According to the conversion of the reaction rate, the catalytic efficiency of the copper-based catalyst in Example 1 is set to 1, the catalytic efficiency in Comparative Example 1 is 0.8, and the catalytic efficiency in Comparative Example 2 is 0.6.

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Abstract

The present invention discloses a copper-based catalyst, which is prepared by reaction of sodium metasilicate and a copper source in an organic phase environment. Compared with the prior art, the copper-based catalyst of the present invention has the catalytic copper dispersedly immobilized on a silica gel carrier to expand the area of contact with the reaction substrate materials. Compared with the prior art, the copper-based catalyst has higher catalytic efficiency, requires more moderate catalytic conditions, and is in favor of industrial production. At the same time, the method of the present invention is completed under the condition of pure organic phase; by contrast, the obtained copper catalyst has higher catalytic efficiency than the one obtained in general water content conditions.

Description

technical field [0001] The invention belongs to the field of catalysts, and in particular relates to a copper-based catalyst and its application. Background technique [0002] Low-carbon olefins such as ethylene and propylene are the most basic raw materials in the petrochemical industry. Taking ethylene as an example, about 75% of petrochemical products are produced from ethylene, which is mainly used to produce polyethylene, polyvinyl chloride, ethylene oxide / ethylene glycol, dichloroethane, styrene, polystyrene, Ethanol, vinyl acetate and other important organic chemical products, in fact, ethylene production has become a symbol to measure the development level of a country's petrochemical industry. [0003] Statistics show that from 1990 to 2003, my country's ethylene equivalent consumption increased by an average of 12% per year, and the growth rate thereafter was even more astonishing. In 2003, my country's ethylene equivalent consumption was 13.5 million tons, and in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72
CPCB01J23/72B01J21/08
Inventor 贾东新焦德华何玲丽
Owner PURESCI ENVIRONMENTAL TECH CO LTD
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