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A surface amphiphilic nano molybdenum disulfide hydrogenation catalyst and its preparation method and application

A nano-molybdenum disulfide and hydrogenation catalyst technology is applied in physical/chemical process catalysts, chemical instruments and methods, and hydrogenation of aromatic hydrocarbons. It can solve problems that do not belong to the category of chemical synthesis, and achieve good application prospects The effect of catalytic activity

Active Publication Date: 2018-01-02
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 preparation process is a physical process, which does not belong to the category of chemical synthesis.

Method used

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  • A surface amphiphilic nano molybdenum disulfide hydrogenation catalyst and its preparation method and application
  • A surface amphiphilic nano molybdenum disulfide hydrogenation catalyst and its preparation method and application
  • A surface amphiphilic nano molybdenum disulfide hydrogenation catalyst and its preparation method and application

Examples

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Effect test

Embodiment 1

[0028] This example illustrates the method of using 1-ethyl-3-methylimidazolium tetrafluoroborate to prepare surface amphiphilic nanomolybdenum disulfide hydrogenation catalyst.

[0029] Add a certain amount of sodium dithiomolybdate [Na 2 MoO 2 S 2 ], make the concentration of molybdenum reach 0.01mol / L, stir until uniform; Add hydroxylamine hydrochloride in the above-mentioned mixture, make hydroxylamine hydrochloride: sodium dithiomolybdate (molar ratio) reach 4:1, stir until uniform; Add to the above-mentioned mixture Add ionic liquid 1-ethyl-3-methylimidazolium tetrafluoroborate to make 1-ethyl-3-methylimidazolium tetrafluoroborate: sodium dithiomolybdate (molar ratio) reach 24: 1. Stir until uniform, and prepare the initial reaction mixture; transfer the initial reaction mixture to a high-pressure synthesis kettle, and crystallize at 200°C for 4 hours. After the crystallization is completed, the reactant is cooled to room temperature, filtered, washed with deionized w...

Embodiment 2

[0032] This example illustrates the method of using 1-butyl-3-methylimidazolium hexafluorophosphate to prepare surface amphiphilic nanomolybdenum disulfide hydrogenation catalyst.

[0033] Add a certain amount of potassium dithiomolybdate [K to 500mL deionized water 2 MoO 2 S 2 ], make the concentration of molybdenum reach 0.015mol / L, stir until uniform; Add potassium borohydride in the above-mentioned mixture, make potassium borohydride: potassium dithiomolybdate (molar ratio) reach 3:1, stir until uniform; Add ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate in the above-mentioned mixture, make 1-butyl-3-methylimidazolium hexafluorophosphate: Potassium dithiomolybdate (molar ratio) reaches 18: 1. Stir until uniform, and configure the initial reaction mixture; transfer the initial reaction mixture to a high-pressure synthesis kettle, and crystallize at 180°C for 10 hours. After the crystallization is completed, the reactant is cooled to room temperature, filter...

Embodiment 3

[0035] This example illustrates the method of using 1-propyl-3-methylimidazolium bromide salt to prepare surface amphiphilic nano molybdenum disulfide hydrogenation catalyst.

[0036] Add a certain amount of ammonium dithiomolybdate [(NH 4 ) 2 MoO 2 S 2 ], make the concentration of molybdenum reach 0.5mol / L, stir until uniform; add polyethyleneimine in the above-mentioned mixture, make polyethyleneimine: molybdenum nitrate (molar ratio) reach 2:1, stir until uniformly; Add ionic liquid 1-propyl-3-methylimidazolium bromide to 1-propyl-3-methylimidazolium bromide: ammonium dithiomolybdate (molar ratio) reaches 0.01:1, stir until uniform, Configure the initial reaction mixture; transfer the initial reaction mixture to a high-pressure synthesis kettle, and crystallize at 160° C. for 40 h. After the crystallization is completed, the reactant is cooled to room temperature, filtered, washed with deionized water and dried to obtain a surface amphiphilic nanomolybdenum disulfide hy...

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Abstract

A surface amphiphilic nano-molybdenum disulfide hydrogenation catalyst and its preparation method and application, the initial reaction mixture is prepared by preparing thiomolybdate, reducing agent, ionic liquid and deionized water according to a certain order and method, and then in a sealed Crystallize under hydrothermal conditions in a high-pressure reactor, and the crystallized product is filtered, washed, and dried to obtain a surface amphiphilic nanomolybdenum disulfide hydrogenation catalyst. The invention uses ionic liquid in the synthesis system, and the prepared nano-molybdenum disulfide has good surface amphiphilicity, and has excellent dispersibility and catalytic activity in both polar and non-polar catalytic reaction systems. The nanomolybdenum disulfide provided by the present invention is used in the reactions of suspended bed hydrogenation deasphalting, hydrodesulfurization, hydrodenitrogenation, and aromatic hydrogenation of heavy oils such as coal tar, heavy oil, super heavy oil, residual oil, and shale oil. It exhibits excellent catalytic activity and has good application prospects in photoelectric conversion, photocatalytic water 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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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/051C10G45/04C10G45/46
Inventor 马怀军田志坚王炳春曲炜李鹏徐仁顺王从新王冬娥潘振栋
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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