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Method for intensifying carbon dioxide catalytic hydrogenation reaction

A technology for catalytic hydrogenation and carbon dioxide, which is used in carbon compound catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc. problem, to achieve the effect of increasing CO2 conversion rate, improving activity, and improving utilization rate

Active Publication Date: 2019-10-25
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the above two methods, the heat required for the catalytic reaction comes from the outside of the catalyst, and the temperature control is limited by the heat conduction process and mass transfer process. Not only the heating rate is slow, the heat energy loss is large, but also it is easy to form local cold spots or hot spots inside the catalyst bed. , causing catalyst activity to decrease or even deactivate
In addition, it is often difficult to avoid mixing impurity components such as sulfur compounds in the raw material gas, which will easily cause the catalyst to be poisoned and deactivated.

Method used

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  • Method for intensifying carbon dioxide catalytic hydrogenation reaction
  • Method for intensifying carbon dioxide catalytic hydrogenation reaction
  • Method for intensifying carbon dioxide catalytic hydrogenation reaction

Examples

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Embodiment 1

[0053] This embodiment provides a method for strengthening the catalytic hydrogenation reaction of carbon dioxide with a nickel foam structured catalyst, the method is as follows figure 1 shown, including the following steps:

[0054] 1. Put the nickel foam material with a length of 70mm, a width of 4mm, a thickness of 1.5mm, and a pore density of 100ppi in 6mol / L hydrochloric acid for ultrasonic cleaning for 5 minutes, rinse repeatedly with deionized water and ethanol, and then put it in a constant temperature In a drying oven, dry at 60°C for 3 hours to obtain a nickel foam structured catalyst skeleton, as shown in the physical picture figure 2 shown.

[0055] 2. Mix 0.009mol Ni(NO 3 ) 2 ·6H 2 O, 0.003mol Al(NO 3 ) 3 9H 2 O and 0.04mol urea are added in 75ml deionized water, and the gained solution is moved in the autoclave;

[0056] 3. Immerse the nickel foam material in the solution, seal the reaction vessel, react at 110°C for 8 hours, take out the reaction produ...

Embodiment 2

[0061] This embodiment provides a method for strengthening the catalytic hydrogenation reaction of carbon dioxide with a nickel foam structured catalyst, the method is as follows figure 1 shown, including the following steps:

[0062] 1. Put the foamed nickel material with a length of 80mm, a width of 3mm, a thickness of 1mm, and a pore density of 90ppi in 7mol / L sulfuric acid for ultrasonic cleaning for 4min, rinse it repeatedly with deionized water and ethanol, and then dry it at a constant temperature In an oven, dry at 60° C. for 2.5 h to obtain a nickel foam structured catalyst framework.

[0063] 2. Mix 0.007mol Ni(NO 3 ) 2 ·6H 2 O, 0.003mol Al(NO 3 ) 3 9H 2 O and 0.035mol urea are added in 80ml deionized water, and the gained solution is moved in the autoclave;

[0064] 3. Immerse the nickel foam material in the solution, seal the reaction vessel, react at 100°C for 7h, take out the reaction product and rinse it with deionized water and dry it at 70°C for 2.5h to...

Embodiment 3

[0069] This embodiment provides a method for strengthening the catalytic hydrogenation reaction of carbon dioxide with a nickel foam structured catalyst, the method is as follows figure 1 shown, including the following steps:

[0070] 1. Put the foamed nickel material with a length of 90mm, a width of 3mm, a thickness of 1mm, and a pore density of 90ppi in 5mol / L nitric acid for ultrasonic cleaning for 5 minutes, rinse repeatedly with deionized water and ethanol, and dry at a constant temperature In an oven, dry at 50° C. for 3.5 h to obtain a nickel foam structured catalyst framework.

[0071] 2. Mix 0.01mol Ni(NO 3 ) 2 ·6H 2 O, 0.003mol Al(NO 3 ) 3 9H 2 O and 0.045mol urea are added in 85ml deionized water, and the gained solution is moved in the autoclave;

[0072] 3. Immerse the nickel foam material in the solution, seal the reaction vessel, react at 110°C for 7 hours, take out the reaction product, rinse it with deionized water and dry it at 70°C for 3 hours, and o...

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Abstract

The invention discloses a method for intensifying a carbon dioxide catalytic hydrogenation reaction. The method for intensifying the carbon dioxide catalytic hydrogenation reaction mainly comprises the following steps that active ingredients having capacity for catalyzing CO2 hydrogenation are loaded on a porous conductive framework to prepare a structural catalyst; the structural catalyst is plugged into a circuit to conduct a current; and the structural catalyst is placed in raw material gas containing CO2 and hydrogen, a power source is turned on to apply the current on the circuit, joule heat generated on the structural catalyst of the current can heat the structural catalyst to a temperature at which CO2 hydrogenation reaction can be carried out, and CO2 and hydrogen react on the structural catalyst. The current is applied on the structural catalyst of the conductive framework to realize electric internal heating, so that the catalyst is heated more uniformly, activity and sulfurpoisoning capacity of the catalyst are improved, and the conversion performance of CO2 is obviously improved.

Description

technical field [0001] The invention relates to the field of gas-solid heterogeneous catalysis, in particular to a method for strengthening the catalytic hydrogenation reaction of carbon dioxide. Background technique [0002] The excessive development and use of traditional fossil energy has resulted in carbon dioxide (CO 2 ) has caused serious environmental and ecological problems. to CO 2 Recycling and resource utilization are powerful means to reduce emissions. Hydrogen produced by splitting water with electricity can convert CO 2 Converted into useful fuels and chemicals (methane, methanol, etc.), CO 2 Emission control provides an effective technical solution for mitigating the greenhouse effect and large-scale storage of hydrogen energy. [0003] CO 2 The molecule is one of the most chemically stable molecules, and its hydrogenation reaction needs to overcome a high reaction energy barrier. Generally, the conversion with low energy consumption is achieved by lowe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755C07C1/12C07C9/04
CPCB01J23/755C07C1/12C07C2523/755C07C9/04Y02P20/141
Inventor 闫存极窦立广李鑫张东张京业肖立业
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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