Catalyst for preparing ethylene through acetylene selective hydrogenation and preparation method of catalyst

A technology for selective hydrogenation and ethylene production, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve the problems of unfavorable active component dispersion, catalytic efficiency decline, Active components are easy to agglomerate and other problems, so as to speed up the desorption rate, prevent the agglomeration of active metals, and improve the catalytic activity
CN104707600AActive Publication Date: 2015-06-17北京锦泰诚瑞科技发展有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
北京锦泰诚瑞科技发展有限公司
Publication Date
2015-06-17

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Abstract

The invention relates to a preparation method of a catalyst for preparing ethylene through acetylene selective hydrogenation. The preparation method comprises the following steps: soaking carbon fiber pretreated in sol, and performing drying, roasting and oxidation corrosion after taking out the carbon fiber to obtain modified carbon fiber; loading an active component and assistant catalysis components on the modified carbon fiber through an impregnation method, and drying and roasting to obtain the catalyst for preparing ethylene through acetylene selective hydrogenation. A discontinuous coating is formed on the surface of the carbon fiber by using a sol-oxidation corrosion-impregnation technology to form a space obstacle to stop active metal agglomeration; the coating adjusts the surface property and the acidity of the carbon fiber, and facilitates improvement on the catalytic activity and the ethylene yield.
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Description

technical field

[0001] The invention relates to a catalyst for producing ethylene by selective hydrogenation of acetylene and a preparation method thereof, belonging to the technical field of preparation of petrochemical catalysts. Background technique

[0002] Ethylene is one of the basic raw materials for the preparation of polyethylene, but the ethylene produced by cracking usually contains a small amount of alkynes, resulting in poor performance of the obtained polyethylene, and even an explosion hazard. Therefore, selective catalytic hydrogenation is usually used in ethylene production to remove alkyne concentration to the lowest level (such as mole fraction <10 -6 ) to meet the requirements of polymerization raw materials, while increasing ethylene production and improving resource utilization.

[0003] Compared with traditional supports, carbon fiber has many advantages, such as controllable micropore structure, strong interface effect, mesopore characteristics, h...

Claims

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