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Bimetallic complex catalyst and preparation method and application thereof

A technology of double metal complexation and metal complex, which is applied in the direction of metal cyanide and complex cyanide, can solve the problems of insufficient carbon dioxide, the content of carbonate needs to be increased, and the low molecular weight of polycarbonate

Active Publication Date: 2015-09-16
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Someone in China proposed a polymer anion coordination bimetallic catalyst system, which used a solution precipitation method to prepare the catalyst. The catalytic efficiency of the catalyst was 1049 polymer / mol catalyst, but the molecular weight of polycarbonate was relatively low, and the amount of carbonate in the product content also needs to be increased
There is also a kind of inverse microemulsion method to prepare double metal cyanide catalyst, the yield of catalyst reaches 75%, the average pore size is large, and forms a multi-level pore structure, but it is mainly for the production of polypropylene carbonate polyols with lower molecular weight , the molecular weight is between 2000-150000, and the fixation rate of carbon dioxide is less than 40%, which cannot meet the requirements for fixing carbon dioxide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038]Weigh 1.38g of potassium hexacyanoferrate (III) and 0.77g of magnesium sulfate in a 250mL beaker, add 20mL of deionized water to dissolve it completely, then add 70mL of cyclohexane, 15ml of polyethylene glycol p-isooctyl Phenyl ether and 10ml of tert-butanol were added dropwise to obtain a transparent second mixed microemulsion under stirring conditions. Weigh 1.63g of zinc chloride and 0.7g of calcium chloride in a 250mL beaker, add 20mL of deionized water to dissolve it completely, and then add 70mL of cyclohexane, 15ml of polyethylene glycol p-isooctylphenyl ether and 10ml of Add dropwise in the system of tert-butanol, and obtain the transparent first mixed microemulsion under stirring condition. Then add the second mixed microemulsion dropwise to the first mixed microemulsion with a separatory funnel under agitation, at a temperature of 40° C., react for 1 hour after the dropwise addition in 30 minutes, then stop stirring to obtain the third mixed microemulsion, and...

Embodiment 2

[0040] Weigh 1.38g of potassium hexacyanoferrate (III) and 0.77g of magnesium sulfate in a 250mL beaker, add 20mL of deionized water to dissolve it completely, then add 70mL of cyclohexane, 15ml of polyethylene glycol p-isooctyl Phenyl ether and 10ml of tert-butanol were added dropwise to the system to obtain a transparent second mixed microemulsion under stirring conditions. Weigh 1.63g of zinc chloride and 1.21g of barium chloride in a 250mL beaker, add 20mL of deionized water to dissolve it completely, and then add 70mL of cyclohexane, 15ml of polyethylene glycol p-isooctylphenyl ether and 10ml of Add dropwise in the system of tert-butanol, and obtain the transparent first mixed microemulsion under the condition of stirring. Then add the second mixed microemulsion dropwise to the first mixed microemulsion with a separatory funnel under agitation, at a temperature of 40° C., react for 1 hour after the dropwise addition in 30 minutes, then stop stirring to obtain the third mi...

Embodiment 3

[0042] Weigh 1.38g potassium hexacyanocobaltate (III) and 1.07g zinc sulfate in a 250mL beaker, add 20mL deionized water to dissolve it completely, then add 70mL cyclohexane, 15ml polyethylene glycol p-isooctyl In the system of base phenyl ether and 10ml tert-butanol dropwise, under the condition of stirring, obtain transparent second mixed microemulsion. Weigh 1.63g of zinc chloride and 0.7g of calcium chloride in a 250mL beaker, add 20mL of deionized water to dissolve it completely, and then add 70mL of cyclohexane, 15ml of polyethylene glycol p-isooctylphenyl ether and 10ml of Add dropwise in the system of tert-butanol, and obtain the transparent first mixed microemulsion under the condition of stirring. Then add the second mixed microemulsion dropwise to the first mixed microemulsion with a separatory funnel under agitation, at a temperature of 40° C., react for 1 hour after the dropwise addition in 30 minutes, then stop stirring to obtain the third mixed microemulsion, an...

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Abstract

The invention discloses a bimetallic complex catalyst and a preparation method and application thereof. The preparation method of the bimetallic complex catalyst comprises the following steps: separately preparing a mixed microemulsion of water-soluble metal salt and calcium chloride and a mixed microemulsion of water-soluble metal complex and water-soluble sulfate on the premise of ensuring solution transparence; mixing and reacting the two mixed microemulsion at a certain temperature under stirring condition to obtain a mixed microemulsion after reaction; aging and standing for a while to form a layer and particle coexisting structure in the mixed microemulsion obtained after the reaction; washing and centrifuging the mixed solution of organic solvent and water; and drying the precipitate to obtain the bimetallic complex catalyst. The catalyst obtained by the invention has good catalysis effect.

Description

technical field [0001] The invention relates to the technical field of polycarbonate preparation, in particular to a double metal complex catalyst and its preparation method and application. Background technique [0002] At present, due to the massive use of fossil fuels by human beings, a large amount of carbon dioxide is emitted, and the greenhouse effect produced by it has constituted increasingly serious environmental pollution. my country is a country that consumes a lot of energy and is facing more severe pressure to reduce carbon dioxide emissions. But on the other hand, carbon dioxide is an inexhaustible resource in nature. One of the main directions of using carbon dioxide is to synthesize polymer polycarbonate materials from it. This material can be widely used in building materials industry, automobile manufacturing industry, medical equipment production, aerospace field, packaging field, electronic and electrical field, optical disk manufacturing field, etc. Al...

Claims

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Application Information

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IPC IPC(8): C08G64/34C01C3/11
Inventor 汪澜马苏川房晶瑞
Owner CHINA BUILDING MATERIALS ACAD
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