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Photo-thermal catalytic CO2 hydrogenation reaction catalyst and preparation method thereof

A technology of hydrogenation reaction and photothermal catalysis, which is applied in the direction of catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, carbon compound catalyst, etc., can solve the problem of low hydrogenation reaction efficiency and achieve considerable output , improve efficiency, enhance the effect of efficiency

Pending Publication Date: 2020-05-22
FUQING BRANCH OF FUJIAN NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But due to CO 2 The high chemical stability makes it in CO 2 It is difficult to be activated in the hydrogenation reaction and then participate in the chemical reaction, resulting in photocatalytic CO 2 The efficiency of the hydrogenation reaction is still not high

Method used

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  • Photo-thermal catalytic CO2 hydrogenation reaction catalyst and preparation method thereof
  • Photo-thermal catalytic CO2 hydrogenation reaction catalyst and preparation method thereof
  • Photo-thermal catalytic CO2 hydrogenation reaction catalyst and preparation method thereof

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preparation example Construction

[0037] The above-mentioned photothermocatalytic CO 2 The preparation method of hydrogenation reaction catalyst, it comprises the following steps carried out in sequence:

[0038] S1 produces precipitation: the TiO 2 After being dispersed in the first deionized water, add chloroauric acid solution and ruthenium chloride solution to react to produce precipitate;

[0039] S2 reduction reaction: add NaOH solution to adjust the pH to 10, then add NaBH 4 solution, undergoing a reduction reaction to generate the catalyst.

[0040] Further, in step S1, TiO 2 It is mixed with the first deionized water in a weight-to-volume ratio of 1 g: 50-150 ml.

[0041] Further, in step S1, the concentration of the chloroauric acid solution is 0.03-0.07M, and the added amount of the chloroauric acid solution is 1-3% of the volume of the first deionized water.

[0042] Further, in step S1, the concentration of the ruthenium chloride solution is 0.2-0.4M, and the added amount of the ruthenium chlor...

Embodiment 1

[0052] A photothermocatalytic CO 2 The preparation method of hydrogenation reaction catalyst, it comprises the following steps:

[0053] S1TiO 2 Preparation: after dissolving tetrabutyl titanate in ethanol, stirring for 20 min, it was added dropwise to the second deionized water, the volume ratio of tetrabutyl titanate, ethanol solution and the second deionized water was 15: 50:100 stirring to evaporate to obtain a white powder, calcined at 400°C for 3h to obtain TiO 2 .

[0054] S2: Au-Ru / TiO 2 Preparation: 1gTiO 2 After being dispersed in 150 ml of the first deionized water, add a chloroauric acid solution having a concentration of 0.04M at a concentration of 1% of the volume of the first deionized water and a solution of 0.2 M at a concentration of 3% of the volume of the first deionized water. M ruthenium chloride solution; after adding 0.1M NaOH solution to adjust the pH to 10, after stirring for 22min, add 0.6M NaBH at a concentration of 2% of the volume of the firs...

Embodiment 2

[0056] Photothermocatalytic CO 2 The preparation method of hydrogenation reaction catalyst comprises the following steps:

[0057] TiO 2 It was prepared by the following method: Dissolve 15ml of tetrabutyl titanate in 50ml of ethanol solution, add it dropwise into the deionized aqueous solution after stirring for 30 minutes, continue to stir for 3 hours, and evaporate the solution to obtain a white powder. The powder is calcined at 400°C for 1 to 3 hours to obtain TiO 2 .

[0058] Au-Ru / TiO 2 Preparation: 1gTiO 2 Disperse in 100ml of ionized water, add 1ml of chloroauric acid solution (0.05M) and 1ml of ruthenium chloride solution (0.3M), and add 0.1M NaOH solution to adjust the pH to 10, stir for 20min and then add 10ml of NaBH 4 (0.7M) solution, continue to stir for 3h for reduction reaction to generate TiO loaded with Ru and Au alloy 2 , namely Au-Ru / TiO 2 catalyst.

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Abstract

The invention relates to a hydrogenation reaction catalyst, specifically to a photo-thermal catalytic CO2 hydrogenation reaction catalyst and a preparation method thereof. The specific catalyst is TiO2 loaded with Au-Ru alloy. The preparation method comprises the following steps: dispersing TiO2 into first deionized water, then adding a chloroauric acid solution and a ruthenium chloride solution,adding a NaOH solution until the pH value of a solution is adjusted to 10, and carrying out a reaction so as to generate a precipitate; and adding a NaBH4 solution, and carrying out a reduction reaction so as to generate the catalyst. According to the invention, with the plasma resonance effect of Au in the catalyst Au-Ru / TiO2, the activation of CO2 molecules can be effectively promoted, and the photocatalytic CO2 hydrogenation reaction efficiency can be enhanced.

Description

technical field [0001] The invention relates to a hydrogenation reaction catalyst, in particular to a photothermocatalytic CO 2 Hydrogenation reaction catalyst and its preparation method. Background technique [0002] Due to the extensive use of fossil fuels such as coal, oil, and natural gas, a large amount of CO is released 2 Greenhouse gases, such as greenhouse gases, have caused global temperature rise, leading to a series of environmental problems such as rising sea levels, frequent droughts, and floods. At the same time, with the rapid development of my country's economy and society, the demand for fossil energy is also increasing. Therefore, with the increasing consumption of fossil energy, my country must develop new energy materials to meet people's growing energy consumption needs and ecological environment requirements. The photocatalytic CO 2 The hydrogenation reaction converts CO 2 Converted to CO, CH 4 、CH 3 A series of energy substances such as OH can n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/52B01J37/03B01J37/16C07C1/12C07C9/04
CPCB01J23/52B01J37/035B01J37/16C07C1/12C07C2523/52B01J35/40B01J35/39C07C9/04
Inventor 王兆宇廖梦莹唐恒熠余王璞陈文韬陈益宾
Owner FUQING BRANCH OF FUJIAN NORMAL UNIV
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