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Surface amphiphilic nanocomposite nickel cobalt iron sulfide catalyst and its preparation method and application

A nanocomposite, nickel-cobalt sulfide technology, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of increased operating costs, increased pre-dispersion during use, Dehydration and pre-sulfurization problems, to achieve good catalytic activity, good application prospects, good surface amphiphilic effect

Active Publication Date: 2019-08-02
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

The advantage of this type of catalyst is that the active components of the catalyst are well dispersed and the price is cheap, but the process of use increases the steps of pre-dispersion, dehydration and pre-sulfurization, and the operating cost is greatly increased.

Method used

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  • Surface amphiphilic nanocomposite nickel cobalt iron sulfide catalyst and its preparation method and application
  • Surface amphiphilic nanocomposite nickel cobalt iron sulfide catalyst and its preparation method and application
  • Surface amphiphilic nanocomposite nickel cobalt iron sulfide catalyst and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] This example illustrates the method of using tetrabutylammonium bromide to prepare surface amphiphilic nanocomposite nickel-cobalt-iron sulfide hydrogenation catalyst.

[0044] Add a certain amount of nickel acetate, cobalt acetate, and ferric chloride to 500mL deionized water to make the concentration of nickel-cobalt-iron reach 0.5mol / L, nickel: cobalt: iron (molar ratio) = 1:3:2, stir until uniform Add ionic liquid tetrabutylammonium bromide to the above mixture, so that tetrabutylammonium bromide: (nickel+cobalt+iron) (molar ratio) reaches 0.5:1, stir until uniform; add ammonium sulfide to the above mixture Aqueous solution, so that ammonium sulfide: (nickel + cobalt + iron) (molar ratio) reaches 2:1, stir until uniform, react at 60°C for 6h, configure the initial reaction mixture; transfer the initial reaction mixture to the high-pressure synthesis kettle, and Crystallization at 120°C for 240h. After the crystallization is completed, the reactant is cooled to room...

Embodiment 2

[0047] This example illustrates the method of using 1-butyl-3-methylimidazolium hexafluorophosphate to prepare a surface amphiphilic nanocomposite nickel-iron sulfide hydrogenation catalyst.

[0048] Add a certain amount of nickel chloride and iron stearate to 500mL deionized water, so that the concentration of nickel + iron reaches 0.015mol / L, nickel: iron (molar ratio) = 3:1 and stir until uniform; add to the above mixture Ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate, make 1-butyl-3-methylimidazolium hexafluorophosphate: (nickel + iron) (molar ratio) reach 18:1, stir until uniform , add potassium sulfide aqueous solution to the above mixture, make potassium sulfide: (nickel+iron) (molar ratio) reach 4:1, stir until uniform, react at 40 ℃ for 24h, configure the initial reaction mixture; transfer the initial reaction mixture to In a high-pressure synthesis kettle, crystallize at 180°C for 10h. After the crystallization is completed, the reactant is cooled to r...

Embodiment 3

[0050] This example illustrates the method of using 1-propyl-3-methylimidazolium bromide salt to prepare surface amphiphilic nanocomposite cobalt-iron sulfide hydrogenation catalyst.

[0051] Add a certain amount of cobalt nitrate and ferric citrate to 500mL deionized water, so that the concentration of cobalt + iron reaches 0.5mol / L, cobalt: iron (molar ratio) = 1:3, stir until uniform; add ion Liquid 1-propyl-3-methylimidazolium bromide, make 1-propyl-3-methylimidazolium bromide: (cobalt + iron) (molar ratio) reach 0.01:1, stir until uniform; add to the above mixture Add hydrogen sulfide aqueous solution to make hydrogen sulfide: (cobalt + iron) (molar ratio) reach 2:1, stir until uniform, react at 50°C for 20 hours, and configure the initial reaction mixture; transfer the initial reaction mixture to a high-pressure synthesis kettle, Crystallized at 160°C for 40h. After the crystallization is completed, the reactant is cooled to room temperature, filtered, washed with deion...

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Abstract

The invention relates to a surface amphiphilic nano-composite nickel-cobalt-iron sulfide catalyst and its preparation method and application. The initial reaction is prepared by preparing nickel source / cobalt source / iron source, sulfur source, ionic liquid and deionized water according to a certain order and method The mixture is hydrothermally crystallized in a sealed high-pressure reactor, and the product is separated to obtain a surface amphiphilic nanocomposite nickel-cobalt-iron hydrogenation catalyst. The present invention uses ionic liquids in the synthesis system, and the prepared nickel-cobalt-iron sulfide not only has a nanometer size, but also has good surface amphiphilicity, and has excellent surface amphiphilicity in polar and non-polar catalytic reaction systems. Dispersion and catalytic activity. The nano-composite nickel-cobalt-iron sulfide provided by the present invention is used in the suspended bed hydrogenation deasphalting, hydrodesulfurization, hydrodenitrogenation, aromatic hydrocarbon hydrogenation, etc. The reaction shows excellent catalytic activity, and has a good application prospect in photoelectric conversion, photocatalytic water hydrogen production and other reactions.

Description

technical field [0001] The invention relates to a surface amphiphilic nano-composite nickel-cobalt-iron 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, cobalt, and iron are three transition metal sulfide materials, which are widely used in catalysis, high energy density batteries, solar photovoltaic materials and other fields. Due to the energy level...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/28B01J27/043C10G45/06C10G45/48
Inventor 马怀军田志坚王从新王冬娥潘振栋李鹏曲炜徐仁顺王炳春
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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