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Surface amphiphilic nano-molybdenum disulfide hydrogenation catalyst and preparation method and application thereof

A technology of nano-molybdenum disulfide and hydrogenation catalyst, which is applied in the direction of physical/chemical process catalyst, molybdenum sulfide, chemical instruments and methods, etc. It can solve problems that do not belong to the category of chemical synthesis, and achieve good application prospects and good catalytic activity. Effect

Active Publication Date: 2016-03-30
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

Although ionic liquids are used in this invention, the method uses ultrasonic treatment, and the pre

Method used

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  • Surface amphiphilic nano-molybdenum disulfide hydrogenation catalyst and preparation method and application thereof
  • Surface amphiphilic nano-molybdenum disulfide hydrogenation catalyst and preparation method and application thereof
  • Surface amphiphilic nano-molybdenum disulfide hydrogenation catalyst and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0030] This example illustrates the method of using 1-ethyl-3-methylimidazolium tetrafluoroborate to prepare surface amphiphilic nanomolybdenum disulfide hydrogenation catalyst.

[0031] Add a certain amount of sodium molybdate to 500mL deionized water to make the concentration of molybdenum reach 0.01mol / L, stir until uniform; add sodium sulfide aqueous solution to the above mixture, so that sodium sulfide: sodium molybdate (molar ratio) reaches 2.5: 1. Stir until uniform, react at 80°C for 12 hours; add hydroxylamine hydrochloride to the above mixture, make hydroxylamine hydrochloride: sodium molybdate (molar ratio) reach 4:1, stir until uniform; add ionic liquid 1-B to the above mixture Base-3-methylimidazolium tetrafluoroborate, make 1-ethyl-3-methylimidazolium tetrafluoroborate: sodium molybdate (molar ratio) reach 24:1, stir until uniform, configure as initial reaction Mixture; the initial reaction mixture was transferred to a high-pressure synthesis kettle, and crystall...

Embodiment 2

[0034] This example illustrates the method of using 1-butyl-3-methylimidazolium hexafluorophosphate to prepare surface amphiphilic nanomolybdenum disulfide hydrogenation catalyst.

[0035]Add a certain amount of potassium molybdate to 500mL deionized water to make the concentration of molybdenum reach 0.015mol / L, stir until uniform; add potassium sulfide aqueous solution to the above mixture, make potassium sulfide: potassium molybdate (molar ratio) reach 4: 1. Stir until uniform, react at 40°C for 24 hours; add potassium borohydride to the above mixture to make potassium borohydride: potassium molybdate (molar ratio) reach 3:1, stir until uniform; add ionic liquid 1 to the above mixture -Butyl-3-methylimidazolium hexafluorophosphate, make 1-butyl-3-methylimidazolium hexafluorophosphate: potassium molybdate (molar ratio) reach 18:1, stir until uniform, configure as initial reaction Mixture; the initial reaction mixture was transferred to a high-pressure synthesis kettle and cr...

Embodiment 3

[0037] This example illustrates the method of using 1-propyl-3-methylimidazolium bromide salt to prepare surface amphiphilic nano molybdenum disulfide hydrogenation catalyst.

[0038] Add a certain amount of molybdenum nitrate to 500mL deionized water so that the concentration of molybdenum reaches 0.5mol / L, and stir until uniform; add hydrogen sulfide aqueous solution to the above mixture, so that hydrogen sulfide:molybdenum nitrate (molar ratio) reaches 2:1, Stir until uniform, react at 50°C for 20h; add polyethyleneimine to the above mixture to make polyethyleneimine:molybdenum nitrate (molar ratio) reach 2:1, stir until uniform; add ionic liquid 1- to the above mixture Propyl-3-methylimidazolium bromide, make 1-propyl-3-methylimidazolium bromide: molybdenum nitrate (molar ratio) reach 0.01:1, stir until uniform, configure initial reaction mixture; Initial reaction mixture Transfer to a high-pressure synthesis kettle and crystallize at 160°C for 40h. After the crystallizat...

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Abstract

A surface amphiphilic nano-molybdenum disulfide hydrogenation catalyst and a preparation method and an application thereof are provided. The preparation method comprises the steps: preparing an initial reaction mixture from a molybdenum source, a sulfur source, a reducing agent, an ionic liquid and deionized water according to a certain sequence and method, then crystallizing in a sealed high pressure reaction kettle and under hydrothermal conditions, and filtering, washing and drying the crystallized product to obtain the surface amphiphilic nano-molybdenum disulfide hydrogenation catalyst. The ionic liquid is used in the synthesis system, and the prepared nano-molybdenum disulfide has good surface amphipathicity and has excellent dispersion and catalytic activity in both polar and non-polar catalytic reaction systems. The nano-molybdenum disulfide provided by the invention shows excellent catalytic activity in suspended bed hydrogenation deasphalting, hydrodesulfurization, hydrodenitrogeneration, aromatic hydrocarbon hydrogenation and other reactions of coal tar, heavy oil, superheavy oil, residual oil, shale oil and other heavy oils, and has good application prospects in photoelectric conversion, water photocatalysis for hydrogen production and other reactions.

Description

technical field [0001] The invention relates to a surface amphiphilic nanomolybdenum sulfide hydrogenation catalyst and a preparation method and application thereof, which belong to the field of synthesis and catalytic application of nanometer materials. Background technique [0002] Suspension bed hydrogenation process is an advanced technology for hydrogenation of heavy unconventional oil (residual oil, heavy oil / ultra heavy oil, shale oil, coal tar heavy component, sandstone oil, oil sand bitumen, etc.) to prepare liquid fuel oil. Suspension-bed hydrogenation process requires catalysts with high activity, high dispersion, high stability, and good economy. It is a challenging task to prepare catalysts suitable for suspension-bed hydrogenation process. [0003] Molybdenum disulfide is a layered material with a graphene-like structure, which has shown good applications in the fields of catalysis, microelectronics, and semiconductors. Supported molybdenum disulfide catalysts...

Claims

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Application Information

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IPC IPC(8): C01G39/06B01J27/051
Inventor 马怀军田志坚曲炜王炳春李鹏潘振栋徐仁顺王从新王冬娥
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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