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A surface amphiphilic nano-nickel sulfide catalyst and its preparation method and application

A surface amphiphile, nickel sulfide technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, nanotechnology, etc., can solve the problems that did not mention the hydrophilic and hydrophobic properties of the surface of nickel sulfide, and did not mention the catalytic activity of hydrogenation, etc. Achieve good application prospects and good catalytic activity

Active Publication Date: 2019-08-09
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

The morphology of the reaction product prepared by the above method is relatively uniform, and rod-shaped nickel sulfide is formed within 5-7 minutes, but there is no mention of the surface hydrophilic and hydrophobic properties of nickel sulfide, let alone whether it has hydrogenation catalytic activity

Method used

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  • A surface amphiphilic nano-nickel sulfide catalyst and its preparation method and application
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  • A surface amphiphilic nano-nickel sulfide catalyst and its preparation method and application

Examples

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Embodiment 1

[0035] This example illustrates the method of using 1-ethyl-3-methylimidazolium tetrafluoroborate to prepare surface amphiphilic nano nickel sulfide hydrogenation catalyst.

[0036] Add a certain amount of nickel nitrate hexahydrate (Ni(NO 3 ) 2 ·6H 2 O), make the concentration of nickel reach 0.01mol / L, stir until uniform; Add ionic liquid 1-ethyl-3-methylimidazolium tetrafluoroborate in the above-mentioned mixture, make 1-ethyl-3-methyl Imidazole tetrafluoroborate: nickel nitrate (molar ratio) reaches 24:1, stir until uniform, add sodium sulfide aqueous solution to the above mixture, make sodium sulfide: nickel nitrate (molar ratio) reach 2.5:1, stir until uniform, React at 80°C for 12h to configure the initial reaction mixture; transfer the initial reaction mixture to a high-pressure synthesis kettle, and crystallize at 200°C for 4h. After the crystallization is completed, the reactant is cooled to room temperature, filtered, washed with deionized water and dried to obta...

Embodiment 2

[0039] This example illustrates the method of using 1-butyl-3-methylimidazolium hexafluorophosphate to prepare a surface amphiphilic nano-nickel sulfide hydrogenation catalyst.

[0040] Add a certain amount of nickel stearate (Ni(H 3 C(CH 2 ) 16 CO 2 ) 2 ), make the concentration of nickel reach 0.015mol / L, stir until uniform; add ionic liquid 1-butyl-3-methylimidazole hexafluorophosphate in the above mixture, make 1-butyl-3-methylimidazole hexafluorophosphate Fluorophosphate: nickel stearate (molar ratio) reaches 18:1, stirs until uniform, adds potassium sulfide aqueous solution to above-mentioned mixture, makes potassium sulfide: potassium nickelate (molar ratio) reaches 4:1, stirs until uniform, React at 40°C for 24h to configure the initial reaction mixture; transfer the initial reaction mixture to a high-pressure synthesis kettle, and crystallize at 180°C for 10h. After the crystallization is completed, the reactant is cooled to room temperature, filtered, washed wit...

Embodiment 3

[0042] This example illustrates the method of using 1-propyl-3-methylimidazolium bromide to prepare surface amphiphilic nano nickel sulfide hydrogenation catalyst.

[0043] Add a certain amount of nickel nitrate hexahydrate (Ni(NO 3 ) 2 ·6H 2 (0), make the concentration of nickel reach 0.5mol / L, stir until uniform; Add ionic liquid 1-propyl-3-methylimidazolium bromide in the above-mentioned mixture, make 1-propyl-3-methylimidazolium bromide : nickel nitrate (molar ratio) reaches 0.01:1, stir until uniform; add hydrogen sulfide aqueous solution to the above mixture, make hydrogen sulfide: nickel nitrate (molar ratio) reach 2:1, stir until uniform, react at 50 ℃ for 20h, 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 amphip...

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Abstract

The invention relates to a surface amphiphilic nano-nickel sulfide catalyst and its preparation method and application. Nickel source, sulfur source, ionic liquid and deionized water are formulated into an initial reaction mixture according to a certain order and method, and then prepared in a sealed high-pressure reactor Crystallization under hydrothermal conditions, the crystallized product is filtered, washed, and dried to obtain a surface amphiphilic nano-nickel sulfide hydrogenation catalyst. The present invention uses ionic liquids in the synthesis system, and the prepared nickel sulfide has not only nanometer size, but also good surface amphiphilicity, and has excellent dispersibility in both polar and non-polar catalytic reaction systems and catalytic activity. The nano-nickel sulfide provided by the present invention performs well in the reactions of suspended bed hydrodeasphalting, hydrodesulfurization, hydrodenitrogenation, and aromatic hydrogenation of heavy oil such as coal tar, heavy oil, super heavy oil, residue oil, and shale oil. It has 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 nano-nickel sulfide catalyst and a preparation method and application thereof, which belong to the field of synthesis and catalytic application of nanomaterials. 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] Nickel sulfide is a transition metal sulfide material, which is widely used in catalysis, nanodevices, optical materials, batteries and other fields due to its unique physical, chemical, photoelectric and magnetic properties. Due to the e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/043B82Y40/00C10G45/06
Inventor 马怀军田志坚曲炜徐仁顺王炳春王从新潘振栋王冬娥李鹏
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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