Double metal cyanide catalyst, preparation method and usage thereof

A double metal cyanide and catalyst technology, applied in the direction of physical/chemical process catalysts, organic compounds/hydrides/coordination complex catalysts, chemical instruments and methods, can solve high cost, affect industrial applications, and catalyst manufacturing costs High-level problems, to achieve the effect of reducing dosage and high catalytic efficiency

Inactive Publication Date: 2010-01-13

湖南领湃达志科技股份有限公司

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AI-Extracted Technical Summary

Problems solved by technology

[0006] Yet the above-mentioned catalyst that can be used for carbon dioxide/epoxide copolymerization has all adopted similar synthetic method in the process of preparation, all is to carry out chelation with metal halide and chelating agent first, then gradually add dropwise metal cyanide, metal The amount of halide and chelating agent is far in excess, generally 3-20 times that of metal cyanide. When Shang Chen et al. prepared tert-butanol as a double metal cyanide ca...

Abstract

The invention discloses a method for preparing double metal cyanide catalyst, so as to obtain the double metal cyanide catalyst with the structure of Aa Bb Cc Dd (H2O) e. The method comprises: halide water solution which has a certain concentration and contains one or more divalent metal(s) is gradually dripped with cyanide water solution containing one or more variable valency metal(s) B; after being filtered and fully washed for reaction, precipitate can be formed; then, chelating agent is added for reaction; after being separated and dried, the double metal cyanide catalyst can be obtained. The preparation method is simple and does not produce a great deal of waste water which is harmful to the environment; the unreacted chelating agent can be recycled, so that the production cost is low, and the method is beneficial to environmental protection. When being applied to the copolymerization of carbon dioxide/epoxide, the catalyst has good application effect.

Application Domain

Organic-compounds/hydrides/coordination-complexes catalysts

Technology Topic

Divalent metalEpoxide +8

Examples

Experimental program(7)

Example Embodiment

[0031] Example 1

[0032] Under stirring conditions, gradually add 50ml of 20% potassium ferricyanide aqueous solution to 50ml of 10% zinc chloride aqueous solution, filter and collect the resulting yellow precipitate, wash with 1000ml of deionized water for 5 times, then add 50ml Diethylene glycol dimethyl ether solution with a concentration of 10% was stirred for 20 hours, filtered to obtain a yellow precipitate, and dried at 100° C. under normal pressure for 24 hours to obtain 15.3 g of light yellow double metal cyanide catalyst.

Example Embodiment

[0033] Example 2

[0034] Under stirring conditions, 10ml of 20% potassium cobalt cyanide aqueous solution was gradually added dropwise to 10ml of 10% zinc chloride aqueous solution, the white precipitate was collected by filtration, washed with 500ml of deionized water for 5 times, and then added 20ml Diethylene glycol dimethyl ether solution with a concentration of 10% was stirred for 20 hours, filtered to obtain a white precipitate, and dried at 100° C. under normal pressure for 24 hours to obtain 3.8 g of white double metal cyanide catalyst.

Example Embodiment

[0035] Example 3

[0036] Under stirring conditions, 10ml of 20% potassium cobalt cyanide aqueous solution was gradually added dropwise to 10ml of 10% zinc chloride aqueous solution, the white precipitate was collected by filtration, washed with 500ml of deionized water for 5 times, and then added 20ml The tert-butanol solution with a concentration of 10% was stirred for 20 hours, filtered to obtain a white precipitate, and dried at 100° C. under normal pressure for 24 hours to obtain 3.7 g of white double metal cyanide catalyst.

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Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

High catalytic efficiency
reduce dosage

Double metal cyanide catalyst, preparation method and usage thereof

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Examples

Example Embodiment

Example Embodiment

Example Embodiment

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Description & Claims & Application Information

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