Fe-based multifunctional catalyst as well as preparation method and application thereof

A catalyst and functional technology, applied in the field of Fe-based multifunctional catalyst and its preparation, can solve the problems of unclear catalytic network, insufficient research on reaction mechanism, low ethanol yield, etc., and achieve simple preparation process, high economic value and Social benefits and low cost effects

Pending Publication Date: 2022-01-11
SHANDONG ENERGY GRP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In summary, choosing different catalysts through different catalytic networks can achieve CO 2 Catalytic conversion to produce ethanol, however, the yield of ethanol is low, and the research on the reaction mechanism is not deep enough, and its real catalytic network is still unclear

Method used

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  • Fe-based multifunctional catalyst as well as preparation method and application thereof
  • Fe-based multifunctional catalyst as well as preparation method and application thereof
  • Fe-based multifunctional catalyst as well as preparation method and application thereof

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Embodiment 1

[0077] S1, by carbonizing Fe-based metal-organic frameworks (ZnFe-MOFs), and then using Na 2 CO 3 Perform alkali metal impregnation and drying to prepare 2% Na-ZnFe@C catalyst. The specific experimental process is as follows:

[0078] 1mmol Zn(NO 3 ) 2 .6H 2 O (0.297g) and 0.6g FeCl 2 .4H 2 Dissolve O (3mmol) in 50ml DMF, add 0.22g triethylenediamine and stir for 30 minutes to form solution A; dissolve terephthalic acid (4.2mmol, 0.70g) in 10mL DMF to form solution B; add solution B to A After the solution was stirred for 1 h, it was transferred to a hydrothermal kettle and heated at 120 °C for 24 h; after the product was centrifuged, it was washed 3 times with DMF, and then dried in a vacuum oven at 60 °C overnight to obtain ZnFe-MOFs.

[0079] The obtained ZnFe-MOFs were carbonized in a tube furnace under a nitrogen atmosphere, and the carbonization temperature was controlled at 550 °C for 3 h. After natural cooling to room temperature, the ZnFe@C catalyst was obtain...

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Abstract

The invention provides a Fe-based multifunctional catalyst. The Fe-based multifunctional catalyst is formed by coupling a Na-ZnFe@C catalyst and a K-CuZnAl catalyst, wherein the Na-ZnFe@C catalyst is a carbonized Fe-based metal organic framework material (ZnFe-MOFs) loaded with sodium ions, and the K-CuZnAl catalyst is a CuZnAl catalyst which is loaded with potassium ions. According to the method, the coupling mode of different catalytic active components of the multifunctional catalyst is optimized, reverse water-gas conversion and Fischer-Tropsch synthesis carbon chain growth in the reaction process are considered, high-selectivity synthesis of ethanol through CO2 one-step hydrogenation is achieved, the CO2 conversion rate reaches up to 39.2%, the ethanol selectivity is 35.0%, and the olefin selectivity is 33.0%; The efficient synergistic effect among different catalytic active components is realized, meanwhile, the invention develops a new catalytic reaction path for preparing ethanol by CO2 hydrogenation, and has higher economic value and social benefit.

Description

technical field [0001] The invention relates to the technical field of chemical catalysis, in particular to an Fe-based multifunctional catalyst and its preparation method and application. Background technique [0002] Since the industrial revolution, countries have developed rapidly, and the energy consumption structure dominated by coal, oil and natural gas has led to the greenhouse gas carbon dioxide (CO 2 ) of massive emissions, as of now, CO in the atmosphere 2 The concentration has already exceeded the warning value (400ppm). This directly leads to a series of ecological and environmental problems such as global warming and sea level rise, which seriously threatens the survival and development of human beings. Therefore, reducing atmospheric CO 2 Concentration is particularly important. Especially the current call for carbon neutrality in my country, to achieve CO 2 The beneficial transformation of is imminent. [0003] with CO 2 Preparation of high-end chemical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/80B01J37/08B01J37/03B01J37/02B01J37/00B01J37/18C07C29/156C07C31/08
CPCB01J23/80B01J37/086B01J37/084B01J37/031B01J37/082B01J37/0201B01J37/0063B01J37/18C07C29/156C07C31/08
Inventor 王阳邢涛吴明铂韩嘉刘建新王伟程智年李冰王文行郭镇李杰陈虎
Owner SHANDONG ENERGY GRP
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