Efficient nano catalyst to convert CO2 into cyclocarbonate and preparation method thereof

A nano-catalyst, cyclic carbonate technology, applied in physical/chemical process catalysts, chemical instruments and methods, organic chemistry and other directions, can solve the problems of high catalyst cost, harsh catalytic conditions, poor stability, etc., to achieve high product yield, The preparation method is simple and the effect is not easy to decompose

Inactive Publication Date: 2019-03-08
LANZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the problems in the prior art, the purpose of the present invention is to provide a method for preparing a highly efficient nano-catalyst converted into cyclocarbonate, which solves the technical problems of high cost, poor stability, harsh catalytic conditions and difficult recovery of existing catalysts

Method used

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  • Efficient nano catalyst to convert CO2 into cyclocarbonate and preparation method thereof
  • Efficient nano catalyst to convert CO2 into cyclocarbonate and preparation method thereof
  • Efficient nano catalyst to convert CO2 into cyclocarbonate and preparation method thereof

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preparation example Construction

[0032] The present invention provides a CO 2 The preparation method that is converted into the efficient nano-catalyst of cyclic carbonate, comprises the following steps:

[0033] (1) crushing and screening natural attapulgite ore to remove impurities to obtain attapulgite powder;

[0034] (2) Disperse the attapulgite powder into the first solvent, add a modifier, stir and react, then centrifuge, wash, and dry to obtain the high-efficiency nano-catalyst.

[0035] The attapulgite powder described in the present invention is a natural one-dimensional nanomaterial with good chemical stability and thermal stability, and its structure is a water-containing magnesium-aluminum-silicon powder with a 2:1 type chain layer structure Salt clay minerals, metals in its structure can be replaced to obtain catalysts with different properties. Attapulgite powder has good characteristics such as unique pore structure, high temperature resistance, salt-alkali resistance and large specific surf...

Embodiment 1

[0050] a CO 2 The preparation method that is converted into the efficient nano-catalyst of cyclic carbonate, comprises the following steps:

[0051] S1: The natural attapulgite ore is crushed and screened to remove impurities to obtain attapulgite powder;

[0052] S2: Put 30g of attapulgite powder into a 500ml two-necked bottle equipped with a mechanical stirring device, add 250ml of deionized water as a solvent, and then add 0.6g of NaBF 4 As a modifying agent: control the temperature at 35-55° C., react for 2 hours, and after the reaction is completed, lower the temperature to room temperature, then centrifuge the product, wash it, and dry it to obtain the high-efficiency nano-catalyst.

Embodiment 2

[0054] As the efficient nano-catalyst prepared in Example 1, obtain 0.5g, be dispersed in 50ml ultrapure water, add 0.5mmol Zn(NO 3 ) 2 , 0.1mmol Co(NO 3 ) 2 and 0.1mmol of Ni(NO 3 ) 2 Dissolve it completely, ultrasonically disperse it for 5 minutes, then place it in a constant temperature reactor at 60°C, keep it warm for 30 days, centrifuge, wash and dry the product to obtain the catalyst.

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Abstract

The invention belongs to the technical field of organic chemical industry and particularly relates to an efficient nano catalyst to convert CO2 into cyclocarbonate and a preparation method thereof. The preparation method includes: (1) crushing natural attapulgite, screening, and removing impurities to obtain attapulgite powder; (2) dispersing the attapulgite powder in a first solvent, adding a modifier, stirring to allow reacting, centrifuging, washing, and drying to obtain the efficient nano catalyst. The efficient nano catalyst prepared via the preparation method herein, as a catalyst to efficiently catalyze CO2 to synthesize cyclocarbonate, has the advantages of easy access to catalyst materials, low cost, good selectivity, and good structural stability; the prepared efficient nano catalyst has the advantages of, upon catalytic reaction, zero consumption of solvents, mild catalytic conditions, wide range of substrate application and the like; the efficient nano catalyst has potential industrial application value.

Description

technical field [0001] The invention belongs to the technical field of organic chemical industry, in particular to a CO 2 High-efficiency nanocatalysts for conversion to cyclic carbonates and methods for their preparation. Background technique [0002] Energy is the material basis for the survival and development of human society, and plays a very important role in the development of the national economy and modern society. The traditional energy structure is dominated by fossil fuels. With the rapid development of society, the reserves of fossil fuels Shrinking day by day, the energy crisis is getting worse. And, with the extensive use of fossil fuels, the released CO 2 Enhanced the greenhouse effect, thus also caused a certain environmental impact. According to survey reports, CO in the atmosphere 2 The total amount is about 3.67×106 billion tons, which is equivalent to about 10 times the carbon content of coal and petroleum. Therefore, CO 2 It is a kind of abundant a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/16B01J27/06C07D317/36
CPCB01J21/16B01J27/06C07D317/36
Inventor 刘伟生王刚王文杰唐晓亮王莹窦伟张国林
Owner LANZHOU UNIVERSITY
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