Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Selective hydrogenation catalyst, preparation method and application thereof

A technology for selective hydrogenation and catalysts, applied in the direction of selective hydrogenation refining, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems to be further improved, and achieve low-temperature hydrogenation High activity, stable hydrogenation activity and high selectivity

Inactive Publication Date: 2014-10-22
CHINA PETROLEUM & CHEM CORP +1
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ability to resist As, S, O, and N impurities still needs to be further improved

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Selective hydrogenation catalyst, preparation method and application thereof
  • Selective hydrogenation catalyst, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] step 1:

[0037] (1) 1.5molAl (NO 3 ) 3 9H 2 O crystals were added to the corresponding volume of deionized water to make them fully dissolved and prepared into a 1.55mol / L aluminum salt solution (A).

[0038] (3) 0.025mol Mg (NO 3 ) 2 ·6H 2 O crystals were added to the corresponding volume of deionized water to make it fully dissolved and prepared into a 0.025mol / L solution (B),

[0039] (4) Calculate the amount of the corresponding (A) and (B) solutions according to the mass percentage of the component MgO as 1%, and mix them uniformly to obtain the mixed solution (C) containing Mg and Al

[0040] (5) Using co-current co-precipitation method, add (NH 4 ) 2 CO 3 solution or ammonia solution and the prepared mixed solution (C) containing Mg and Al, the dropping rate of the mixed solution (C) is 30 drops / min, (NH 4 ) 2 CO 3 Or the dropping rate of the ammonia solution is 20 drops / min; finally, adjust the pH of the precipitate to pH=8 with ammonia water, and f...

Embodiment 2

[0045] The method is the same as that in Example 1, except that the Ce weight content in the catalyst is 2.5 wt%, and Catalyst 2 is prepared. See Table 1 for details.

Embodiment 3

[0047]The method is the same as in Example 1, except that the molar ratio of metallic nickel to citric acid in the impregnating solution in step 2 is 3:1, and the Ce weight content in the catalyst is 2.5wt%, to obtain catalyst 3. See Table 1 for details.

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

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention provides a selective hydrogenation catalyst, a preparation method and an application thereof. The selective hydrogenation catalyst employs magnesium oxide-aluminium oxide as a carrier, rare earth elements, preferably cerium or praseodymium, as additives, and a transition metal nickel as an active component. The catalyst carrier is prepared in a manner of a co-current-flow co-precipitation method. The metal active component and the additives are carried on the carrier in a manner of a co-impregnation method with addition of a certain amount of citric acid to an impregnation solution. The content of the nickel metal is 10%-20% based on the total weight of the catalyst and the content of the additives is 1-3% based on the total weight of the catalyst. The catalyst can be used for hydrogenation of C5-C9 fractions, especially of C8-C9 heavy fractions, in pyrolysis gasoline. The catalyst is high in low-temperature activity and selectivity, is strong in anti-impurity performance, wherein the impurities includes arsenic, sulphur, oxygen and nitrogen, is large in gel-accommodating capacity and is stable in activity during a long-period operation.

Description

technical field [0001] The invention relates to the field of hydrogenation catalysts, in particular to a catalyst for selective hydrogenation of petroleum hydrocarbons, and also relates to a preparation method and application of the catalyst. Background technique [0002] The C5-C9 fraction of pyrolysis gasoline is a by-product of the ethylene industry. According to the different cracking raw materials and cracking depths, its output accounts for more than 50% by weight of the ethylene production capacity, and the content of aromatics accounts for 40-80% by weight, so it is the main aromatics. source. In industrial production, cut C8 and C9 fractions, undergo one-stage hydrogenation, remove highly unsaturated hydrocarbons, such as chain conjugated dienes, styrene, alkynes and cyclic conjugated dienes, and then undergo two-stage hydrodesulfurization, After removing monoenes and organic compounds such as sulfur, nitrogen, and oxygen, the C8 fraction is used to produce xylene,...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83C10G45/36
Inventor 纪玉国柴忠义任玉梅季静张富春
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com