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Catalyst for preparing methanol through carbon dioxide hydrogenation and preparation method and application of catalyst

A technology of carbon dioxide and catalyst, applied in the field of chemistry and chemical industry, to achieve the effect of easy preparation, good stability, simple and controllable preparation process

Pending Publication Date: 2021-10-15
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Two-dimensional materials, especially the abundant defect sites on the surface of two-dimensional metal sulfides are potential CO 2 Active sites for hydrogenation to methanol, but its introduction in large quantities remains a huge challenge

Method used

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  • Catalyst for preparing methanol through carbon dioxide hydrogenation and preparation method and application of catalyst
  • Catalyst for preparing methanol through carbon dioxide hydrogenation and preparation method and application of catalyst
  • Catalyst for preparing methanol through carbon dioxide hydrogenation and preparation method and application of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Dissolve 800mg of ammonium tungstate in water and place in an autoclave, then add 15mL of dimethyl sulfoxide. Seal the autoclave, and pour hydrogen into the autoclave as a reducing agent (dangerous operation), heat the autoclave to 450°C for a high temperature reaction for 3 hours, when the temperature reaches the temperature, the pressure is 10-30 MPa, and cool the autoclave to At room temperature, gas was evolved and the crude product was taken out. The above crude product was alternately washed with ethanol and water until the filtrate was neutral, and dried to obtain Cat1.

Embodiment 2

[0036] Dissolve 400mg of sodium tungstate in water and place in an autoclave, then add 10mL of carbon disulfide. Seal the autoclave, and pour nitrogen into the autoclave as a protective gas, heat the autoclave to 400°C for a high temperature reaction for 4 hours, when the temperature reaches the temperature, the pressure is 10-30MPa, after the reaction is complete, cool the autoclave to room temperature, and release gas The crude product was taken out. The above crude product was alternately washed with ethanol and water until the filtrate was neutral, and then dried to obtain Cat2.

Embodiment 3

[0038] Dissolve 400mg of vanadium chloride in ethanol and place in an autoclave, then add 10mL of carbon disulfide. Seal the high-pressure reactor, and pour nitrogen into the reactor as a protective gas, heat the reactor to 500°C for a high temperature reaction for 3 hours, when the temperature reaches the temperature, the pressure is 10-30MPa, after the reaction is complete, cool the reactor to room temperature, and release gas The crude product was taken out. The above crude product was alternately washed with ethanol and water until the filtrate was neutral, and then dried to obtain Cat3.

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Abstract

The invention discloses a catalyst for preparing methanol through carbon dioxide hydrogenation and a preparation method and application of the catalyst. The defect-rich thin-layer two-dimensional metal sulfide is synthesized by adopting a high-temperature and high-pressure solvothermal coupling reduction method and is used for preparing methanol through carbon dioxide hydrogenation, and the rich defects enable the metal sulfide to have high activity for preparing methanol through carbon dioxide hydrogenation. The catalyst for preparing methanol through hydrogenation of carbon dioxide, provided by the invention, can obtain relatively high activity and selectivity, is good in stability and has a relatively good industrial application prospect.

Description

technical field [0001] The invention relates to a carbon dioxide hydrogenation methanol catalyst and its preparation method and application, belonging to the fields of chemistry and chemical industry. Background technique [0002] carbon dioxide (CO 2 ) is the final product of the combustion of carbon-containing compounds, and its excessive emissions aggravate the greenhouse effect and bring enormous pressure to the ecological environment. CO 2 Efficient conversion and utilization of energy is an important way to alleviate the energy crisis and the greenhouse effect, and it is also a research hotspot and difficulty in the field of energy and chemical industry. In recent years, the use of "green H 2 " with CO 2 The process of producing methanol by reaction has attracted more and more attention. [0003] Methanol is an important chemical raw material, intermediate and alternative fuel, and it also has important applications in hydrogen storage, fuel cells and other fields...

Claims

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Application Information

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IPC IPC(8): B01J27/04B01J27/047B01J27/051B01J27/19B01J29/89B01J37/10B01J37/16B01J37/18C07C29/153C07C31/04
CPCB01J27/051B01J27/047B01J27/04B01J27/19B01J29/89B01J37/10B01J37/18B01J37/16C07C29/153B01J35/23C07C31/04Y02P20/52
Inventor 邓德会胡景庭
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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