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A kind of hydrogenation catalyst and its preparation and application

A hydrogenation catalyst and hydrogenation catalysis technology, applied in catalyst activation/preparation, molecular sieve catalyst, physical/chemical process catalyst, etc., can solve problems such as poor sulfur resistance, avoid sulfur poisoning, reduce the generation of carbon deposits, Good for entry and exit and diffusion

Active Publication Date: 2020-01-07
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the most common impregnation method is used to load the active metal on the molecular sieve, the active metal is completely exposed on the surface of the catalyst, which makes its sulfur resistance poor, and the active metal is extremely prone to sulfur poisoning.

Method used

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  • A kind of hydrogenation catalyst and its preparation and application
  • A kind of hydrogenation catalyst and its preparation and application
  • A kind of hydrogenation catalyst and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] 4g solid sodium hydroxide (NaOH≥96%), 1.7g potassium hydroxide (KOH≥96%) and 14g potassium silicate (K 4 SiO 4 ≥98%) is dissolved in the mixed solution of 27g water preparation, 13g pseudo-boehmite (Al 2 o 3 ≥60%) solids were dissolved in the above mixed solution, and then transferred to the crystallization kettle, and the crystallization kettle was placed in an oven at 100°C for crystallization for 1 hour, and then the crystallization kettle was taken out and cooled to 80°C, and then 10 g of Boehmite and 4.2g of silicon oxide were uniformly added to the mixed solution within 1 hour. After mixing evenly, a mixed solution of 0.5g of chloroplatinic acid and 3g of citric acid was added to the mixed solution, and the constant temperature crystallization was continued at 100°C 2h, finally filtering and drying the crystallized product to obtain a Pt-containing small-pore molecular sieve material 1Pt-A with a pore size of less than 0.3 nm, wherein the mass content of Pt in t...

Embodiment 2

[0059] 4g solid sodium hydroxide (NaOH≥96%), 1.7g potassium hydroxide (KOH≥96%) and 14g potassium silicate (K 4 SiO 4 ≥98%) is dissolved in the mixed solution of 27g water preparation, 13g pseudo-boehmite (Al 2 o 3 ≥60%) solids were dissolved in the above mixed solution, and then transferred to the crystallization kettle, and the crystallization kettle was placed in an oven at 100°C for crystallization for 1 hour, and then the crystallization kettle was taken out and cooled to 80°C, and then 10 g of Boehmite and 4.2g of silicon oxide are uniformly added to the mixed solution within 1 hour, after mixing evenly, then a mixed solution of 0.4g of palladium chloride and 3g of citric acid is added to the mixed solution, and the constant temperature crystallization is continued at 100°C 2h, finally filtering and drying the crystallized product to obtain a Pd-containing small-pore molecular sieve material 1Pd-A with a pore size of less than 0.3 nm, wherein the mass content of Pd in ...

Embodiment 3

[0063] 4g solid sodium hydroxide (NaOH≥96%), 1.7g potassium hydroxide (KOH≥96%) and 14g potassium silicate (K 4 SiO 4 ≥98%) is dissolved in the mixed solution of 27g water preparation, 13g pseudo-boehmite (Al 2 o 3 ≥60%) solids were dissolved in the above mixed solution, and then transferred to the crystallization kettle, and the crystallization kettle was placed in an oven at 100°C for crystallization for 1 hour, and then the crystallization kettle was taken out and cooled to 80°C, and then 10 g of Boehmite and 4.2g of silicon oxide were uniformly added to the mixed solution within 1 hour, and continued constant temperature crystallization at 100°C for 1 hour, then took out the crystallization kettle and cooled it down to 80°C, opened the crystallization kettle and added 0.4g into the mixed solution A mixed solution of palladium chloride and 3g of citric acid was continued to be crystallized in an oven at 100°C for 2 hours, and finally the crystallized product was filtered ...

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Abstract

The invention provides a hydrogenation catalyst as well as preparation and application thereof and specifically provides a petroleum fraction oil hydrogenation refining catalyst containing noble metal. The hydrogenation catalyst takes a mixture of a molecular sieve with a pore diameter less than 0.3nm, aluminum hydroxide and / or amorphous silicon-aluminum as a carrier and noble metal atoms are deposited in a molecular sieve pore channel; VIB group metal and VIII group metal are used as active metal and are loaded outside the molecular sieve pore channel, wherein by taking the total weight of the hydrogenation catalyst as 100 percent, the content of the noble metal atoms is 1 to 2 percent and the content of active metal oxide is 10 to 40 percent. The catalyst provided by the invention can sufficiently express dissociation performance of a noble metal component on hydrogen gas and enough active hydrogen atoms are provided in a reaction system, so that the catalyst has very high hydrogenation performance and aromatic hydrocarbon saturation performance; meanwhile, the catalyst has relatively high desulfurization performance through effects of a peripheral non-noble-metal component and acidic center.

Description

technical field [0001] The invention relates to the field of chemical hydrogenation catalysis, in particular to the field of hydrogenation catalysis of petroleum processing fractions, more specifically to a hydrogenation catalyst and its preparation and application. Background technique [0002] The trend of heavy crude oil in the world continues to intensify, and the output of light crude oil is getting lower and lower, which makes the supply of high-quality gasoline and diesel raw materials increasingly tight. As an important means of clean oil production, hydrofining has the advantages of strong raw material adaptability and good product quality. Therefore, it is widely used in the production process of high-quality clean oil. [0003] The key to hydrofining technology lies in the catalyst. Existing hydrofining catalysts usually use Co / Ni as a promoter and Mo / W as a non-precious metal catalyst. Compared with noble metal catalysts, non-noble metal catalysts have higher r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/78B01J37/30B01J37/08B01J37/02C10G45/04C10G45/10C10G45/12
CPCB01J23/002B01J29/78B01J37/0201B01J37/08B01J37/088B01J37/30C10G45/04C10G45/10C10G45/12
Inventor 魏强周亚松周文武丁思佳刘美芳张晴
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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