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A kind of co@c/biomass catalyst and its preparation method and application

A biomass and catalyst technology, applied in the field of Co@C/biomass catalyst and its preparation, can solve the problem of low catalytic efficiency of the catalyst, and achieve the effects of low cost, uniform distribution and improved catalytic efficiency

Active Publication Date: 2021-08-24
DANYANG HUAFA ENVIRONMENTAL PROTECTION MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the defects of low catalytic efficiency of catalysts in the prior art, the object of the present invention is to provide a Co@C / biomass catalyst and its preparation method and application

Method used

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  • A kind of co@c/biomass catalyst and its preparation method and application
  • A kind of co@c/biomass catalyst and its preparation method and application
  • A kind of co@c/biomass catalyst and its preparation method and application

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Effect test

Embodiment 1

[0031] (1) Take 1.5g cubic wood block, reflux it with 50mL nitric acid solution at 80°C for 12 hours, then wash the block repeatedly with deionized water for 5 times under boiling conditions, dry it at room temperature, and seal it. stand-by;

[0032] (2) Pour 45mL of DMF, 3mL of methanol and 3mL of deionized water into a flask, weigh 0.48g (1.65mmol) of cobalt nitrate hexahydrate and 0.0989g (0.5mmol) of 2,5-dihydroxyterephthalene Formic acid was placed in a flask together and stirred evenly to obtain a precursor solution of Co-MOF-74;

[0033] (3) Put the cubic wooden blocks to be used in step (1) into a three-necked flask, vacuum seal, extract the precursor solution of Co-MOF-74 with a needle tube, pour it into a three-necked flask, vacuum seal and impregnate for 5 hours, Then put the flask into a vacuum drying oven at 80°C for constant temperature reaction for 12 hours. After the reaction, the flask is cooled to room temperature, and the wooden block is taken out, and dri...

Embodiment 2

[0040] (1) Take 2g cube wood block, reflux it with 50mL nitric acid solution at 120°C for 1 hour, then wash the block repeatedly with deionized water for 5 times under boiling conditions, dry it at room temperature, and seal it until use;

[0041] (2) Pour 17mL of DMF, 17mL of methanol and 17mL of deionized water into a flask, weigh 0.145g (0.5mmol) of cobalt nitrate hexahydrate and 0.0989g (0.5mmol) of 2,5-dihydroxyterephthalene Formic acid was placed in a flask together and stirred evenly to obtain a precursor solution of Co-MOF-74;

[0042] (3) Put the cubic wood blocks to be used in step (1) into a three-necked flask, vacuum seal, extract the precursor solution of Co-MOF-74 with a needle tube, pour it into a three-necked flask, vacuum seal and impregnate for 3 hours, Then put the flask into a vacuum drying oven at 60°C for constant temperature reaction for 36 hours. After the reaction, the flask is cooled to room temperature, and the wooden block is taken out, and dried at ...

Embodiment 3

[0046] (1) Take 1g of cubic wood block, reflux it with 50mL hydrogen peroxide at 50°C for 36 hours, then wash the block repeatedly with deionized water for 5 times under boiling conditions, dry it at room temperature, and seal it for use ;

[0047] (2) Measure 100mL of DMF, 5mL of methanol and 5mL of deionized water into a flask, respectively weigh 1.4527g (5mmol) of cobalt nitrate hexahydrate and 0.0989g (0.5mmol) of 2,5-dihydroxyterephthalic acid , put them together in a flask, and stir evenly to prepare a Co-MOF-74 precursor solution;

[0048] (3) Put the cubic wood blocks to be used in step (1) into a three-necked flask, vacuum seal, extract the precursor solution of Co-MOF-74 with a needle tube, pour it into a three-necked flask, vacuum seal and impregnate for 10 hours, Then put the flask into a vacuum drying oven at 100°C for a constant temperature reaction for 5 hours. After the reaction, the flask was cooled to room temperature, and the wooden block was taken out, and...

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Abstract

The invention belongs to the technical field of catalysts, and in particular relates to a Co@C / biomass catalyst and its preparation method and application. The present invention adopts vacuum impregnation-vacuum reaction-carbonization three-step method to synthesize Co@C / biomass catalyst: the biomass and the obtained Co-MOF-74 precursor solution are subjected to a vacuum synthesis reaction, and then the reacted biomass Carry out carbonization to prepare Co@C / biomass catalyst. In the present invention, the biomass with large pores is used as the carrier of the metal catalyst derived from MOFs, which is beneficial to the dispersion of the metal catalyst, and its regular and transparent pore structure strengthens the mass transfer effect of the gas and promotes the reaction between the reaction gas and the catalyst. , which increases the activity of the catalyst.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a Co@C / biomass catalyst and its preparation method and application. Background technique [0002] With the depletion of petroleum resources, whether the liquid fuels such as gasoline and diesel oil can be continuously and stably supplied has become a major worry in the consumer market. The technology of producing liquid fuels by converting coal, natural gas and biomass More and more attention has been paid to it, and the hydrogenation synthesis reaction is one of the important ways to realize this conversion. Cobalt (Co)-based catalysts have high CO hydrogenation activity and Fischer-Tropsch synthesis reaction chain growth ability, and have higher production capacity at high conversion rates. They are suitable for reaction systems with higher hydrogen-carbon ratios, and the reaction process is relatively stable. It is not easy to deposit carbon and be poisoned, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/75B01J37/08C10G2/00
CPCY02E50/30
Inventor 秦恒飞郑德峰周月程青张春勇
Owner DANYANG HUAFA ENVIRONMENTAL PROTECTION MACHINERY
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