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Ethylene oxychlorination catalyst as well as preparation method and application thereof

An ethylene oxychlorination catalyst and a catalyst technology, which are applied in the directions of catalyst activation/preparation, physical/chemical process catalyst, catalyst carrier, etc., can solve the problems of poor catalytic activity, uneven dispersion of active components, etc. Good for transport and high ethylene selectivity

Pending Publication Date: 2021-11-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to overcome the defects of the existing ethylene oxychlorination catalysts, such as uneven dispersion of active components and poor catalytic activity, and provide a method for preparing ethylene oxychlorination catalysts and the catalyst prepared by the method in ethylene oxychlorination applications in chemical reactions

Method used

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  • Ethylene oxychlorination catalyst as well as preparation method and application thereof
  • Ethylene oxychlorination catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] Add 7g of aluminum isopropoxide into a solution containing 90ml of water and 1.5g of nitric acid, stir at 60°C until completely dissolved to obtain solution A. Add 2g of template agent P123 into a solution of 12g of 37% hydrochloric acid and 70ml of water, mix and stir at 50°C until P123 is completely dissolved to obtain solution B. Mix solution A and solution B, slowly add 0.03 g of polyethylene glycol laurate while stirring, then adjust the pH value to 6.0-8.0 with NaOH, and age at room temperature for 24 hours. The obtained product was repeatedly washed with a mixed solution of water and ethanol with a volume ratio of 1:1 until the conductivity of the clear liquid after washing was lower than 30 μS / cm. Then spray-dry at 100° C. to obtain raw mesoporous alumina powder. The mesoporous alumina raw powder was calcined at 600° C. for 2 hours to remove the template agent to obtain a spherical mesoporous alumina carrier 1 .

[0083] Dissolve a certain amount of copper chl...

Embodiment 2

[0086]Add 10g of aluminum isopropoxide into a solution containing 100ml of water and 3g of nitric acid, stir at 80°C until completely dissolved to obtain solution A. Add 2g of template agent P123 into a solution of 20g of 37% hydrochloric acid and 70ml of water, mix and stir at 35°C until P123 is completely dissolved to obtain solution B. Mix solution A and solution B, slowly add 0.07g polyethylene glycol laurate while stirring, then adjust the pH value to 6.0-8.0 with NaOH, and age at room temperature for 30h. The obtained product was repeatedly washed with a mixed solution of water and ethanol at a volume ratio of 1:0.5 until the conductivity of the clear liquid after washing was lower than 30 μS / cm. Then spray-dry at 100° C. to obtain raw mesoporous alumina powder. The mesoporous alumina raw powder was calcined at 500° C. for 4 hours to remove the template agent to obtain spherical mesoporous alumina carrier 2 .

[0087] Dissolve a certain amount of copper chloride, potas...

Embodiment 3

[0090] Add 12g of aluminum isopropoxide into a solution containing 105ml of water and 3g of nitric acid, stir at 60°C until completely dissolved to obtain solution A. Add 2g of template agent P123 into a solution of 15g of 37% hydrochloric acid and 70ml of water, mix and stir at 50°C until P123 is completely dissolved to obtain solution B. Mix solution A and solution B, slowly add 0.03 g of polyethylene glycol laurate while stirring, then adjust the pH value to 6.0-8.0 with NaOH, and age at room temperature for 36 hours. The obtained product was repeatedly washed with a mixed solution of water and ethanol with a volume ratio of 1:2 until the conductivity of the supernatant after washing was lower than 30 μS / cm. Then spray-dry at 110° C. to obtain raw mesoporous alumina powder. The mesoporous alumina raw powder was calcined at 400° C. for 5 hours to remove the template agent to obtain a spherical mesoporous alumina carrier 3 .

[0091] Dissolve a certain amount of copper chlo...

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Abstract

The invention relates to an ethylene oxychlorination catalyst and a preparation method and an application thereof in the field of catalysts. The ethylene oxychlorination catalyst comprises a carrier and an active component loaded on the carrier, wherein the carrier is a spherical mesoporous carrier; the active components comprise a main active component copper component and an auxiliary active component; the auxiliary active component comprises an alkali metal component and a rare earth metal component. The catalyst prepared by the invention has relatively high specific surface area and pore volume and relatively concentrated pore size distribution, and can achieve relatively good catalytic activity and selectivity and high yield under the condition of very low active component loading capacity.

Description

technical field [0001] The invention relates to the field of catalysts, and more specifically, relates to an ethylene oxychlorination catalyst and its preparation method and application. Background technique [0002] 1,2-Dichloroethane, commonly known as dichloroethane (EDC), is a very important chemical raw material in industry. Dichloroethane is converted into vinyl chloride and hydrogen chloride after cracking. Vinyl chloride monomer can be polymerized Become polyvinyl chloride (PVC) with a wide range of uses. The hydrogen chloride obtained by cracking is separated from vinyl chloride, and then the hydrogen chloride is contacted with ethylene and oxygen-containing gas in the presence of a catalyst for the production of EDC, which is the oxychlorination reaction. [0003] Catalysts and methods for the production of chlorinated hydrocarbons by the oxychlorination process have been developed over the years. Specifically, the production of 1,2-dichloroethane by oxychlorinat...

Claims

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Application Information

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IPC IPC(8): B01J27/122B01J21/04B01J32/00B01J35/08B01J35/10B01J37/00C07C17/156C07C19/045
CPCB01J27/122B01J21/04B01J37/0018C07C17/156B01J35/51B01J35/617B01J35/638B01J35/615B01J35/635B01J35/647C07C19/045
Inventor 穆晓蕾贾春革李斗星齐兰芝
Owner CHINA PETROLEUM & CHEM CORP
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