Porous copper-based catalyst for preparing ethanol through carbon dioxide hydrogenation and preparation method thereof

A technology of carbon dioxide and porous copper, which is applied in the preparation of organic compounds, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve the problems of no industrialization prospects, low activity and ethanol selectivity, expensive precious metals, etc., and achieve mild conditions , simple application method and low cost effect

Pending Publication Date: 2021-12-07
内蒙古鄂尔多斯电力冶金集团股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Studies have shown that noble metal catalysts such as palladium and rhodium have good reaction performance for the hydrogenation of carbon dioxide to ethanol, but the high price of these noble metals makes them almost unsuitable

Method used

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  • Porous copper-based catalyst for preparing ethanol through carbon dioxide hydrogenation and preparation method thereof
  • Porous copper-based catalyst for preparing ethanol through carbon dioxide hydrogenation and preparation method thereof
  • Porous copper-based catalyst for preparing ethanol through carbon dioxide hydrogenation and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0051] Example 1

[0052] The formulation concentration is 0.15mol·L -1 The hydroxide solution; 6 gbeta-type molecular sieve, dispersed under 80 ° C in oil bath, stirred at 180 ml, stirred for 30 min; filtered suspension, washing with deionized water to wash the BETA-type molecular sieve after washing with deionized water. After it is placed in an air blowing in an air blowing in an annular oven at an 110 ° C;

[0053] 2.28 g of three hydrogen nitrate copper, dissolved in a quantity of deionized water, subtracted from 0.51 g of water absorption after 6 g of alkali treatment, and the alkali-treated BETA-type molecular sieve is equally improved; after immersion The Beta-type molecular sieve was placed at 110 ° C for 12 h, followed by calcination at 450 ° C in the air in the muffle, and the obtained sample was cu / cs-beta;

[0054] Under stirring, 0.12 g of ectometallic sulfate, 0.54 g of silica, 0.10 g of cesium hydroxide, 3.16 g of 20% tetraethylene hydroxide solution and Cu / CS-...

Example Embodiment

[0056] Example 2

[0057] According to the method of Example 1, only the alkali solution of the TEA-type molecular sieve was changed to a sodium hydroxide solution, and 0.10 g of hydroxide used in formulated gel was more than 0.03 g of sodium hydroxide, and the remaining conditions were unchanged.

Example Embodiment

[0058] Example 3

[0059] According to the method of Example 1, only the alkali solution of the treatment BETA-type molecular sieve is changed to a potassium hydroxide solution, and 0.10 g of hydroxide used in formulation of gel is more 0.04 g of potassium hydroxide, and the remaining conditions are unchanged.

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Abstract

The invention discloses a porous copper-based catalyst for preparing ethanol through carbon dioxide hydrogenation and a preparation method thereof, and belongs to the technical field of carbon dioxide resource utilization. The method comprises the following steps: dissolving a template agent and soluble salt of copper in a solvent, depositing on a molecular sieve by an equivalent-volume impregnation method, drying and roasting to obtain a loaded molecular sieve; reacting the loaded molecular sieve with a strong alkali solution, removing the template agent after the reaction, and drying to obtain a sample; mixing an aluminum source, a silicon source, strong alkali, a template agent and a sample to obtain a gel embedding body, and then performing aging and drying to obtain dry gel; and crystallizing the dry gel, and then performing washing, drying and roasting to obtain the copper-based catalyst. The catalyst disclosed by the invention is applied to preparation of ethanol by hydrogenation of carbon dioxide, has the characteristics of high specific surface area, low cost, high activity, high ethanol selectivity and high stability, and has a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of resource utilization of carbon dioxide, and in particular relates to a porous copper-based catalyst for carbon dioxide hydrogenation to ethanol and a preparation method thereof, in particular to a molecular sieve-supported porous copper-based catalyst for carbon dioxide hydrogenation to ethanol and a method for synthesizing ethanol through catalytic hydrogenation of carbon dioxide. Background technique [0002] Ethanol is an important fuel and chemical. Carbon dioxide hydrogenation to ethanol technology, as an important part of carbon neutral technology, can not only solve environmental problems such as the greenhouse effect, but also effectively obtain high value-added products, which has important research and application value. The catalytic conversion of carbon dioxide hydrogenation to polycarbonate alcohols includes thermal catalysis, photocatalysis, electrocatalysis, etc., the core of which is the ...

Claims

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Application Information

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IPC IPC(8): B01J29/76B01J29/46B01J29/14C07C29/154C07C31/08
CPCB01J29/7615B01J29/146B01J29/46C07C29/154B01J2229/186C07C31/08
Inventor 宋旭东郭婷高磊罗莎边伟康
Owner 内蒙古鄂尔多斯电力冶金集团股份有限公司
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