Selective hydrogenation catalyst of alkine and diolefin, preparation method and application

A hydrogenation catalyst and selective hydrogenation technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, hydrocarbons, etc., can solve the problem of blocking pores, reducing reaction activity and selectivity, etc. problems, achieve the effect of reducing dosage, improving hydrogenation efficiency and reducing production cost

Active Publication Date: 2007-05-09
CHINA PETROLEUM & CHEM CORP +1
View PDF13 Cites 30 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because even if acetylene molecules can enter the depth of the channel, it is easy to cause reactions such as seco

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1

[0027] Will contain 5g Al 2 O 3 20% of Al 2 O 3 Colloidal solution with HNO 3 Adjust pH=3.5, weigh 100g of SiC ring carrier, immerse it in the prepared colloidal solution, dry at 120°C for 24h, then calcinate at 300°C for 8h and then cool to room temperature for later use. PdCl containing 0.02g Pd 2 Solution, AgNO containing 0.1g Ag 3 Solution containing 0.1g Bi Bi(NO 3 ) 2 Solution, Ca(NO 3 ) 2 The carrier to be used should be impregnated step by step. After each element is impregnated, it should be dried at 150°C for 24 hours, and finally calcined at 600°C for 8 hours to obtain catalyst A, in which Pd content is 0.03%, Ag content is 0.1%, and Bi content is 0.1 %, the Ca content is 0.01%.

Example Embodiment

[0028] Example 2

[0029] With 10g Al 2 O 3 Of 5% Al 2 O 3 Add HNO to the colloidal solution 3Adjust pH=2.5, weigh 100g of SiC ring carrier for impregnation, dry at 200°C for 8h, calcined at 300°C for 15h, and cool to room temperature for later use. The carrier to be used was first immersed in a nitrate solution containing 0.01g Ag, 0.05g Bi, 0.02g La, dried at 200°C for 8 hours, and then the carrier was immersed in a nitrate solution containing 0.05g Pd, 0.005g Ca, 0.005g Sr And 0.02g K chloride salt solution, dried at 200°C for 8h, 300°C for 15h to obtain catalyst B, in which the Pd content is 0.05%, the Ag content is 0.01%, the Bi content is 0.05%, and the Ca content is 0.005%. The K content is 0.02%, the Sr content is 0.005%, and the La content is 0.02%.

Example Embodiment

[0030] Example 3

[0031] With 6g Al 2 O 3 30% of Al 2 O 3 In colloidal solution, use HNO 3 Adjust pH=4.2, weigh 100g of talc powder ring carrier and immerse it in the prepared solution, dry at 100°C for 13.5h, then calcinate at 780°C for 20h and then cool to room temperature for later use. Pd(NO 3 ) 2 , AgNO containing 0.5g Ag 3 , Bi(NO 3 ) 2 , Cu(NO 3 ) 2 , NaNO containing 0.05g Na 3 A mixed solution was prepared, the carrier to be used was immersed in the mixed solution, dried at 135°C for 30h, and then calcined at 550°C for 20h to obtain catalyst C. The Pd content is 0.01%, the Ag content is 0.5%, the Bi content is 0.5%, the Cu content is 0.05%, and the Na content is 0.05%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A selective hydrocatalyst for the alkine and diolefin in C2-10 fraction is composed of a inertial carrier chosen from silicon carbide, talc powder and fire-proof earth and a coated alumina layer containing Pd, Ag, Bi and at least one of Cu, Zn, alkali metal, AE metal and RE element. Its preparing process is also disclosed.

Description

technical field [0001] The invention relates to a catalyst for selective hydrogenation of alkynes and dienes in C2-C10 fractions and a preparation method thereof. It particularly relates to a palladium selective hydrogenation catalyst coated with an alumina coating with active components on the surface of an inert carrier and a preparation method thereof. technical background [0002] In the field of petrochemical industry, the ethylene fraction in the cracking and separation section contains 0.3-3% acetylene. This acetylene impurity is a poison to the polyethylene catalyst and affects the normal progress of the ethylene polymerization reaction. In order to avoid the above-mentioned ethylene polymerization catalyst poisoning phenomenon, the method of catalyst selective hydrogenation is usually used to convert acetylene in the ethylene fraction into ethylene. However, in the reaction of selective hydrogenation to remove acetylene, the acetylene adsorbed on the surface of the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01J23/44B01J23/50B01J23/54B01J23/66B01J23/89C07C7/167C07C11/04
CPCY02P20/52
Inventor 戴伟卫国宾彭晖穆玮房艳刘海江戚文新卢红亮何耕云郭彦来朱警
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap