Preparation method capable of modifying nickel-based ternary non-supported catalyst by adding aids PEG and SB powder

A catalyst and non-supported technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of underdeveloped pore structure, poor mechanical strength, and poor dispersion of catalyst metal active components. Achieve the effects of facilitating industrial production and application, increasing the removal rate, and increasing the desulfurization rate of diesel oil

Inactive Publication Date: 2017-07-07
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to improve the shortcomings of poor dispersion of catalyst metal active components, insufficient pore structure and poor mechanical strength in the existing non-supported catalyst preparation technology

Method used

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  • Preparation method capable of modifying nickel-based ternary non-supported catalyst by adding aids PEG and SB powder
  • Preparation method capable of modifying nickel-based ternary non-supported catalyst by adding aids PEG and SB powder

Examples

Experimental program
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Effect test

Embodiment 1

[0028] According to the metal molar ratio of Ni:Mo:W=2:1:1, 9.954 g of nickel acetate tetrahydrate, 5.071 g of ammonium heptamolybdate, and 3.531 g of ammonium metatungstate were weighed. Pour 5.071 g of ammonium heptamolybdate and 3.531 g of ammonium metatungstate into a three-necked flask with a capacity of 500 ml, and dissolve them completely with 300 ml of deionized water at 50 °C to obtain solution A. Use ammonia water as the precipitant to adjust the pH of solution A to 9, and heat the temperature of solution A to 90 °C in a water bath. Pour nickel acetate tetrahydrate into a beaker and dissolve in 20 ml deionized water to obtain solution B. At the same temperature, slowly change solution B and drop it into solution A, and it can be seen that a precipitate is gradually formed. After the dropwise addition, the solution was stirred at 90 °C for 5 h to fully compound the active components. During the stirring process, 1.856 g of PEG and 1.523 g of SB powder were added to ...

Embodiment 2

[0030] According to the metal molar ratio of Ni:Mo:W=2:1:1, 11.632 g of nickel nitrate hexahydrate, 5.071 g of ammonium heptamolybdate, and 3.531 g of ammonium metatungstate were weighed. Pour the Mo and W compounds into a three-neck flask with a capacity of 500 ml, and completely dissolve them with 300 ml of deionized water at 50°C to obtain solution A. Use ammonia water as the precipitant to adjust the pH of solution A to 9, and heat the temperature of solution A to 90 °C in a water bath. Pour nickel nitrate hexahydrate into a beaker and dissolve in 20 ml deionized water to obtain solution B. At the same temperature, slowly change solution B and drop it into solution A, and it can be seen that a precipitate is gradually formed. After the dropwise addition, the solution was stirred at 90 °C for 5 h to fully compound the active components. During the stirring process, 2.023 g of PEG and 4.047 g of SB powder were added to the solution respectively. After the stirring was comp...

Embodiment 3

[0032]According to the metal molar ratio of Ni:Mo:W=2:1:1, 9.520 g of nickel chloride hexahydrate, 5.071 g of ammonium heptamolybdate, and 3.531 g of ammonium metatungstate were weighed. Pour the Mo and W compounds into a three-neck flask with a capacity of 500 ml, and completely dissolve them with 300 ml of deionized water at 50°C to obtain solution A. Use ammonia water as the precipitant to adjust the pH of solution A to 9, and heat the temperature of solution A to 90°C in a water bath. Pour nickel chloride hexahydrate into a beaker and dissolve in 20 ml deionized water to obtain solution B. Slowly drop solution B into solution A at the same temperature, and it can be seen that a precipitate is gradually formed. After the dropwise addition, the solution was stirred at 90 °C for 5 h to fully compound the active components. During the stirring process, 1.812 g of PEG and 3.624 g of SB powder were added to the solution respectively. After the stirring was completed, the suspe...

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Abstract

The invention relates to a preparation method of a nickel-based ternary non-supported catalyst modified by adding additives PEG and SB powder. Two different additives are introduced in the process of preparing the unsupported catalyst by the co-precipitation method, and the active group PEG and SB powders with different molecular weights are added to the mixed solution of nickel molybdate and ammonium metatungstate as dispersant surfactant and dispersant respectively. The preparation method of the modified non-supported catalyst of the present invention can effectively improve the dispersion of the active metal component and the hydrogenation performance of the catalyst, significantly improve the mechanical strength of the non-supported catalyst, and at the same time ensure that the modified catalyst is After the hydrogenation reaction, it meets the strict requirements of the national standard for deep desulfurization of diesel oil.

Description

technical field [0001] The invention relates to the field of catalyst preparation, in particular to a method for preparing a nickel-based ternary non-supported catalyst modified by adding additives PEG and SB powder. Background technique [0002] In the preparation process of non-supported catalysts, the addition of additives is beneficial to improve the hydrodesulfurization and denitrification activities of the catalyst. This is mainly reflected in the fact that some additives can play a role in pore formation and enrich the pore structure of the catalyst. For example, some surface Active agents, etc. In addition, the auxiliary agent can also play the role of dispersing active metal components and increasing the amount of medium-strong acid of the catalyst. Mature and stable diesel desulfurization catalysts have strict requirements on issues such as activity, acidity, and recovery. Auxiliaries are an indispensable and important part of catalyst research and development. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/888C10G45/08
CPCB01J23/8885B01J35/1014B01J35/1038B01J35/1061C10G45/08C10G2300/202C10G2400/04
Inventor 施岩赵婉竹张少华陈洁静刘文豹王蓉辉王荧光裴巧慧
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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