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A copper-indium alloy catalyst for hydrogenating carbon dioxide to synthesize methanol and its preparation method and application

A technology for synthesizing carbon dioxide and methanol, which is applied in the preparation of organic compounds, metal/metal oxide/metal hydroxide catalysts, hydroxyl compound preparation, etc., can solve the problems of great difficulty in industrialization, and achieve high selectivity and CO2 The effect of high conversion rate and good catalytic activity

Active Publication Date: 2022-07-15
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Due to the limitation of thermodynamic factors in the hydrogenation of carbon dioxide to methanol reaction, the conversion rate of carbon dioxide is difficult to break through 20%. Researchers often improve the activity of the catalyst from the composition of the catalyst to improve the catalytic activity and selectivity.
At present, the catalysts for carbon dioxide hydrogenation to methanol are not yet mature, and it is still very difficult to realize industrialization

Method used

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  • A copper-indium alloy catalyst for hydrogenating carbon dioxide to synthesize methanol and its preparation method and application
  • A copper-indium alloy catalyst for hydrogenating carbon dioxide to synthesize methanol and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0027] described in this example for CO 2 Copper indium alloy catalyst for hydrogenation to methanol is Cu / ZrO 2 catalyst. Its preparation method comprises the following steps:

[0028] (1) Weigh Cu(NO 3 ) 2 ·3H 2 O 0.60g and Zr (NO 3 ) 4 ·5H 2 O 4.29g was dissolved in 100mL deionized, take C 6 H 8 O 7 ·H 2 O 3.15g was dissolved in 50mL deionized water; the citric acid solution was moved to the constant pressure funnel, and then slowly added dropwise to the mixed nitrate solution, and magnetic stirring was carried out at 90°C while adding dropwise, and the rotating speed was 450rpm / min , after the titration is completed, a uniformly mixed sol solution is obtained. In this embodiment, deionized water acts as a solvent and does not participate in the reaction process.

[0029] (2) The sol solution obtained in (1) is magnetically stirred at a temperature of 90° C. with a rotating speed of 450 rpm / min, and the sol-like solution is stirred until a glass-like amorphous p...

Embodiment 2

[0034] described in this example for CO 2 Copper-Indium Alloy Catalyst for Hydrogenation to Methanol is Cu-In / ZrO 2 catalyst. Its preparation method comprises the following steps:

[0035] (1) Weigh Cu(NO 3 ) 2 ·3H 2 O 0.60g, In (NO 3 ) 3 ·4.5H 2 O 0.48g and Zr (NO 3 ) 4 ·5H 2 O 4.29g dissolved in 100mL deionized, C 6 H 8O 7 ·H 2 O 3.47g was dissolved in 50mL of deionized water, the citric acid solution was moved to the constant pressure funnel, and then slowly added dropwise to the mixed nitrate solution, while magnetic stirring at a temperature of 90 ° C while adding dropwise, the rotating speed is 450rpm / min , after the titration is completed, a uniformly mixed sol solution is obtained. In this embodiment, deionized water acts as a solvent and does not participate in the reaction process.

[0036] (2) The sol solution obtained in (1) is magnetically stirred at a temperature of 90° C., the rotation speed is 450 rpm / min, and the sol-like solution is stirred to ...

Embodiment 3

[0041] described in this example for CO 2 Copper-Indium Alloy Catalyst for Hydrogenation to Methanol is Cu-In / ZrO 2 catalyst. Its preparation method comprises the following steps:

[0042] (1) Weigh Cu(NO 3 ) 2 ·3H 2 O 0.60g, In (NO 3 ) 3 ·4.5H 2 O 0.95g and Zr (NO 3 ) 4 ·5H 2 O 4.29g dissolved in 100mL deionized, C 6 H 8 O 7 ·H 2 O 3.79g was dissolved in 50mL deionized water, the citric acid solution was moved to the constant pressure funnel, and then slowly added dropwise to the mixed nitrate solution, while magnetic stirring at a temperature of 90 ° C while adding dropwise, the rotating speed is 450rpm / min , after the titration is completed, a uniformly mixed sol solution is obtained. In this embodiment, deionized water acts as a solvent and does not participate in the reaction process.

[0043] (2) The sol solution obtained in (1) is magnetically stirred at a temperature of 90° C., the rotation speed is 450 rpm / min, and the sol-like solution is stirred to a ...

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Abstract

A copper-indium alloy catalyst for hydrogenating carbon dioxide to synthesize methanol, a preparation method and application thereof, belong to the field of chemical catalysis. The method is as follows: copper nitrate, indium nitrate and zirconium nitrate are mixed and dissolved in deionized water, and an aqueous citric acid solution is added dropwise under the action of magnetic stirring to obtain a uniformly mixed sol solution; the sol solution is stirred under the action of magnetic force until it reaches A glassy amorphous product is obtained; the glassy amorphous product is moved to a vacuum drying box and dried to obtain a gel-like catalyst precursor; the gel-like catalyst precursor is placed in a tube furnace for calcination, and after cooling Grinding, tableting, forming and sieving to obtain a catalyst precursor; put the catalyst precursor into H 2 / N 2 It is fired in a tubular furnace in an atmosphere, cooled and ground after being kept warm. The present invention adopts sol-gel method to prepare Cu-In / ZrO 2 The catalyst has CO 2 The advantages of high conversion rate and high methanol selectivity, at a higher reaction temperature of 270 ℃, CO 2 The conversion rate was 9.2-12.2%, and the methanol selectivity was 47.1-71.8%.

Description

technical field [0001] The invention belongs to the technical field of chemical catalysis, and in particular relates to a copper-indium alloy catalyst used for hydrogenating carbon dioxide to synthesize methanol, and a preparation method and application thereof. Background technique [0002] With the excessive consumption of fossil energy, CO 2 Emissions continue to rise, and the environmental pollution and "greenhouse effect" caused by them are becoming more and more serious. by CO 2 methods of capture and utilization that can reduce atmospheric CO 2 content. One of the effective ways is to convert CO 2 Hydrogenation to methanol can not only effectively reduce CO in the air 2 emissions, and can produce methanol clean energy. As a chemical raw material, methanol is widely used in the preparation of formaldehyde, acetic acid and other products. Industrially, the syngas uses conventional Cu / ZnO / Al 2 O 3 The catalyst is used to synthesize methanol, and the catalyst is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/825C07C31/04C07C29/154
CPCB01J23/825C07C29/154C07C31/04Y02P20/52
Inventor 许琦高佳宋夫交程文强李悦
Owner YANCHENG INST OF TECH