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Micro-nano type hollow-structured double-metal catalyst and preparation method and application thereof

A technology of bimetallic catalysts and hollow structures, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of low utilization of metal active sites and few edge active sites, and achieve Improve the utilization rate of metal raw materials, the coke suppression effect is good, and the effect of simplifying the pre-vulcanization step

Inactive Publication Date: 2018-10-16
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a micro-nano hollow structure bimetallic catalyst and its preparation method and application, which solves the problem of currently synthesized dispersed MoS 2 There are few active sites on the exposed edge of the catalyst entity, and the utilization rate of metal active sites is not high

Method used

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  • Micro-nano type hollow-structured double-metal catalyst and preparation method and application thereof
  • Micro-nano type hollow-structured double-metal catalyst and preparation method and application thereof
  • Micro-nano type hollow-structured double-metal catalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This example provides a micro-nano hollow structure bimetallic catalyst Ni-MoS 3 , the active component of the catalyst is the sulfided substance of molybdenum and nickel, the molar ratio of molybdenum to nickel is 1:1, and the sum of the mass fractions of molybdenum and nickel in the catalyst is 32.35%, and its preparation method is as follows:

[0033] (1) Take 10.0g of ammonium molybdate and pour it into 30ml of ammonia water, stir at 45°C until the ammonium molybdate is completely dissolved, after heating up to 65°C, add 50ml of ammonium sulfide aqueous solution, react for 100min, then cool and crystallize to product 1;

[0034] (2) Take 2.8g of polyvinylpyrrolidone (PVP), 1.3g of nickel acetate tetrahydrate and 200ml of absolute ethanol in a container, stir and reflux at a reaction temperature of 85°C for 6 hours, then centrifuge the product 2;

[0035] (3) 50 mg of product 2 was dissolved in 25 ml of isopropanol, and 220 mg of product 1 was dissolved in 480 ml of ...

Embodiment 2

[0039] This example provides a micro-nano hollow structure bimetallic catalyst Ni-MoS 3 , the catalyst active component is the sulfide state substance of molybdenum and nickel, the molar ratio of molybdenum to nickel is 1:3, and the mass fraction of molybdenum and nickel in the catalyst is 34.67%, and its preparation method is as follows:

[0040] (1) Take 10.0g of ammonium molybdate and pour it into 20ml of ammonia water, stir at 45°C until the ammonium molybdate is completely dissolved, heat up to 68°C, add 150ml of hydrogen sulfide gas, react for 60min, then cool and crystallize to product 1;

[0041] (2) Take 2.8g of polyvinylpyrrolidone (PVP), 1.96g of nickel nitrate and 200ml of absolute ethanol in a container, stir and reflux at a reaction temperature of 90°C for 4 hours, then centrifuge the product 2;

[0042] (3) 50 mg of product 2 was dissolved in 18 ml of absolute ethanol, and 220 mg of product 1 was dissolved in 550 ml of deionized water. Pour the product 1 soluti...

Embodiment 3

[0046] This example provides a micro-nano hollow structure bimetallic catalyst Ni-MoS 3 , the catalyst active ingredient is molybdenum and nickel sulfide substances, the molar ratio of molybdenum to nickel is 1.5:1, the mass fraction of molybdenum and nickel in the catalyst is 40.56%, and its preparation method is as follows:

[0047] (1) Take 10.0g of ammonium molybdate and pour it into 40ml of ammonia water, stir at 45°C until the ammonium molybdate is completely dissolved, after heating up to 60°C, add 150ml of ammonium sulfide aqueous solution, react for 120min, then cool and crystallize to obtain product 1;

[0048] (2) Take 2.8g of polyvinylpyrrolidone (PVP), 0.84g of nickel chloride and 200ml of absolute ethanol in a container, stir and reflux at a reaction temperature of 65°C for 8 hours, and centrifuge the product 2;

[0049] (3) 50 mg of product 2 was dissolved in 20 ml of ethylene glycol, and 220 mg of product 1 was dissolved in 330 ml of deionized water. Pour the ...

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Abstract

The invention discloses a micro-nano type hollow-structured double-metal catalyst and a preparation method and application thereof and belongs to the technical field of catalysts. The catalyst is molybdenum-nickel ternary sulfide, the active components of the catalyst is molybdenum sulfide and nickel sulfide, the mole ratio of molybdenum to nickel is (1-1.5):(1-3), and the mass fraction of the molybdenum and the nickel in the catalyst is 25-45%. The micro-nano type hollow-structured double-metal catalyst is applicable to heavy oil hydrocracking. The micro-nano type hollow-structured double-metal catalyst has the advantages that by the hollow structure, more exposed edge active sites can be obtained by using fewest metal active components, and accordingly metal raw material utilization rateis increased, cost is saved, and the high-activity and low-cost catalyst is provided for heavy oil suspended bed hydrocracking.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a micro-nano hollow structure bimetallic catalyst and its preparation method and application, which are suitable for heavy oil suspension bed hydrocracking. Background technique [0002] In recent years, due to the increasing exploitation of oil resources, high-quality oil resources have faced the risk of shortage. The increased oil production worldwide will mainly be heavy crude oil and heavy synthetic oil, so refiners are facing the pressure of heavy and inferior raw materials. In the case of domestic high-quality crude oil gradually decreasing and foreign low-quality crude oil gradually increasing, it is necessary to lighten these heavy oils, so that the heavy components that are difficult to use directly can be converted into commonly used light component oils, so that it can be extremely Therefore, the processing of heavy oil, especially high-carbon, high-sulfur-nitrogen,...

Claims

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Application Information

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IPC IPC(8): B01J27/051C10G47/06
CPCB01J27/0515C10G47/06
Inventor 邓文安李娟李传孟环爽杜峰黄英李庶峰
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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