A preparation method of phosphotungstic acid modified mofs derived porous carbon oxidation desulfurization catalyst

An oxidative desulfurization, phosphotungstic acid technology, applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, chemical instruments and methods, etc., can solve the problem of poor catalytic reaction effect, difficult reaction process, etc. The complex manufacturing process and other problems can achieve the effects of good oxidative desulfurization performance, high recycling rate and sufficient drying.

Active Publication Date: 2021-06-22
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing desulfurization catalyst manufacturing process is complicated, the reaction process is difficult, and the catalytic reaction effect is not good

Method used

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  • A preparation method of phosphotungstic acid modified mofs derived porous carbon oxidation desulfurization catalyst
  • A preparation method of phosphotungstic acid modified mofs derived porous carbon oxidation desulfurization catalyst
  • A preparation method of phosphotungstic acid modified mofs derived porous carbon oxidation desulfurization catalyst

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] At room temperature, 0.81 g of 2-methylimidazole was added to the methanol solution, and stirred for 30 min to completely dissolve the 2-methylimidazole to obtain solution 1; 0.25 g of zinc nitrate hexahydrate was added to the methanol solution; The hydrated zinc nitrate was completely dissolved to obtain solution 2; under continuous stirring, the above solution 1 was slowly added to solution 2, and after stirring at room temperature for 24 hours, a large amount of milky white precipitate was obtained. After centrifugation, powdery ZIF- 8. Under the protection of an inert gas, the ZIF-8 prepared above was calcined at 500 °C to obtain a porous carbon material; 0.01 g of phosphotungstic acid was loaded into 0.1 g of the above prepared porous carbon material by an equal volume impregnation method. Then, the composite material was prepared; the composite material was placed in a vacuum drying oven and dried at 100 °C for 12 h to obtain HPW@ZC-1 type HPW@ZC oxidative desulfu...

Embodiment 2

[0042] At room temperature, 0.81 g of 2-methylimidazole was added to the methanol solution, and stirred for 30 min to completely dissolve the 2-methylimidazole to obtain solution 1; 0.25 g of zinc nitrate hexahydrate was added to the methanol solution; The hydrated zinc nitrate was completely dissolved to obtain solution 2; under continuous stirring, the above solution 1 was slowly added to solution 2, and after stirring at room temperature for 24 hours, a large amount of milky white precipitate was obtained. After centrifugation, powdery ZIF- 8. Under the protection of inert gas, the ZIF-8 prepared above was calcined at 600 °C to obtain a porous carbon material; a porous carbon material was obtained by using an equal volume impregnation method, and 0.01 g of phosphotungstic acid was loaded into 0.1 g of the porous carbon material prepared above. Then, the composite material was prepared; the composite material was placed in a vacuum drying oven and dried at 100 °C for 12 h to...

Embodiment 3

[0044] At room temperature, 0.81 g of 2-methylimidazole was added to the methanol solution, and stirred for 30 min to completely dissolve the 2-methylimidazole to obtain solution 1; 0.25 g of zinc nitrate hexahydrate was added to the methanol solution; The hydrated zinc nitrate was completely dissolved to obtain solution 2; under continuous stirring, the above solution 1 was slowly added to solution 2, and after stirring at room temperature for 24 hours, a large amount of milky white precipitate was obtained. After centrifugation, powdery ZIF- 8. Under the protection of an inert gas, the ZIF-8 prepared above was calcined at 700 °C to obtain a porous carbon material; 0.01 g of phosphotungstic acid was loaded into 0.1 g of the above prepared porous carbon material by an equal volume impregnation method. Then, the composite material was prepared; the composite material was placed in a vacuum drying oven and dried at 100 °C for 12 h to obtain HPW@ZC-3 type HPW@ZC oxidative desulfu...

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Abstract

The invention discloses a method for preparing a porous carbon oxidation desulfurization catalyst derived from phosphotungstic acid modified MOFs, and relates to the technical field of catalysts, comprising the following steps: (1) adding 2-methylimidazole into methanol solution at room temperature, fully stirring, Solution 1 was obtained; (2) at room temperature, zinc nitrate hexahydrate was added to the methanol solution, and fully stirred to obtain solution 2; (3) under continuous stirring, the above solution 1 was slowly added to solution 2, and at room temperature (4) Under the protection of inert gas, roast the ZIF-8 prepared above to obtain a porous carbon material; (5) load phosphotungstic acid on the porous carbon prepared above In terms of materials, a composite material is prepared; (6) The obtained composite material is dried in a vacuum drying oven to obtain a carbon oxidation desulfurization catalyst. The invention has the advantages of simple process, high material conversion rate, high catalyst recycling rate, green and environment-friendly preparation process and less pollution.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a preparation method of a phosphotungstic acid-modified metal-organic framework-derived porous carbon oxidative desulfurization catalyst. Background technique [0002] As people pay more and more attention to environmental protection, countries around the world have stricter and stricter requirements on the quality of vehicle transportation fuels, mainly because the organic sulfur compounds in liquid fuels will bring serious harm to the natural environment . With increasingly stringent regulations and fuel specifications in the global refining industry, the deep removal of sulfur compounds from fuel oil has attracted increasing attention; however, traditional catalytic hydrodesulfurization (HDS) requires high temperature and high pressure conditions, and It has poor effect on refractory aromatic thiophenes. Therefore, many different exploration methods have appeared in recent ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/18C10G27/12
CPCB01J27/188C10G27/12
Inventor 霍全张旭彪刘素燕张博宇宁尧浮艳菲孙海会
Owner YANSHAN UNIV
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