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Preparation method and application of Pt-MoS2/LDHS hydrocracking catalyst

A pt-mos2, catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, through aromatics hydrorefining, etc. The effect of hydrogen process, reduction of Pt content, and good catalytic activity

Active Publication Date: 2016-12-21
易高生物化工科技(张家港)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in the heavy oil hydrotreating process, due to the high viscosity and high impurity content of the heavy oil, the space velocity of the heavy oil hydrotreating process is very small, so the amount of catalyst is greatly increased compared with other refining processes, and the heavy oil hydrotreating catalyst uses Short life and poor reproducibility, so it is particularly important to reduce the cost of the catalyst

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Preparation of nano-molybdenum disulfide: add ammonium tetrathiomolybdate with a concentration of 0.05mol / l to the solvent diethyl ether, stir evenly, then add an appropriate amount of reducing agent hydrazine hydrate, stir evenly, and configure the initial reaction mixture And transferred in the autoclave;

[0021] (2) Zn(NO 3 ) 2 and Al(NO 3 ) 3 Dissolved in water, configured as a mixed solution with a total metal particle concentration of 0.6mol / L, keeping Zn 2+ :Al 3+ The molar ratio is 2:1, drop a certain amount of alkaline solution in a constant temperature 70-80 ° C water bath, adjust the pH = 11, react for 2 hours, and age for 12 hours. During the process, a hydrotalcite-like precipitate with a layered structure is formed. , the precipitate was separated, washed three times with deionized water, and then dried at 60°C for 5 hours. Then dissolve the LDHS material in the solvent ethylene glycol, add ionic liquid 1-methyl-3-carboxyethylimidazolium tetrafl...

Embodiment 2

[0024] (1) Synthesis of nano-molybdenum disulfide by solvent method: add 0.8mol / l ammonium tetrathiomolybdate to the solvent DMF, stir evenly, then add an appropriate amount of reducing agent hydrazine hydrate, stir evenly, configure the initial reaction mixture and transfer to In a high-pressure synthesis kettle.

[0025] (2) Zn(NO 3 ) 2 and Al(NO 3 ) 3 Dissolved in water, configured as a mixed solution with a total metal particle concentration of 0.5-1mol / L, keeping Zn 2+ :Al 3+The molar ratio is 2:1, drop a certain amount of alkaline solution in a water bath with a constant temperature of 80°C, adjust the pH to 11, react for 2 hours, and age for 12 hours. Separate, wash with deionized water 2 to 3 times, and then dry at 80°C for 5 hours. Then dissolve the LDHS material in the solvent ethylene glycol, add ionic liquid or 1-ethyl-3-methylimidazolium tetrafluoroborate, stir ultrasonically for 10 minutes and then reflux at 50°C for 10h, wash after the reaction, 60°C Let ...

Embodiment 3

[0028] (1) Synthesis of nano-molybdenum disulfide by solvent method: add 0.1mol / l ammonium tetrathiomolybdate to the solvent diethyl ether, stir well, then add an appropriate amount of reducing agent hydrazine hydrate, stir well, configure the initial reaction mixture and Transfer to high pressure synthesis kettle.

[0029] (2) Functionalization of LDHS with ionic liquids: Zn(NO 3 ) 2 and Al(NO 3 ) 3 Dissolved in water, configured as a mixed solution with a total metal particle concentration of 0.5-1mol / L, keeping Zn 2+ :Al 3+ The molar ratio is 2:1, drop a certain amount of alkaline solution in a water bath with a constant temperature of 70°C, adjust the pH to 12, react for 2 hours, and age for 12 hours. During this process, a hydrotalcite-like precipitate with a layered structure is formed. Separate, wash with deionized water 2-3 times, and then dry at 60°C for 8 hours. Then dissolve the LDHS material in the solvent ethylene glycol, add the ionic liquid, reflux at 50-6...

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Abstract

The invention relates to the field of hydrocracking catalysis, and especially relates to a preparation method of a Pt-MoS2 / LDHS hydrocracking catalyst. The above obtained composite material has the structure and performance advantages of platinum-molybdenum disulfide and a hydrotalcite-like compound; and the vulcanizing process of a vulcanizing agent and a molybdate precursor is omitted in a synthesis system, raw materials are directly controlled, and the solvent effect is assisted to improve the dispersibility of nanometer molybdenum disulfide, so the catalyst has the advantages of good heat resistance, good pressure resistance, high cracking rate and high heat stability.

Description

technical field [0001] The invention relates to the field of hydrocracking, in particular to a supported Pt-MoS prepared by using ionic liquid 2 / LDHS hydrocracking catalyst and its application. Background technique [0002] Heavy oil (such as atmospheric residue of crude oil, vacuum residue of crude oil, heavy crude oil, oil sands, synthetic heavy oil products, etc.) contains a large amount of heavy metals (such as nickel, vanadium), sulfur, nitrogen and other impurities, and The content of colloids and asphaltenes is relatively high. In order to meet the requirements of catalytic cracking feed and protect downstream catalysts, these impurities must be removed as much as possible, and hydrotreating is the most suitable process for removing the above impurities. Heavy oil hydrotreating catalysts generally include protective agents, demetallization catalysts, desulfurization catalysts, conversion catalysts, etc. according to their functions. The main function of the convers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/051C10G45/10C10G45/52
CPCC10G45/10C10G45/52B01J27/0515C10G2300/205C10G2300/206C10G2300/202B01J35/40B01J35/653B01J35/651
Inventor 叶澄
Owner 易高生物化工科技(张家港)有限公司
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