ALKYNE SELECTIVE HYDROGENATION CATALYST AND PREPARATION METHOD THEREFOR, AND SELECTIVE HYDROGENATION METHOD

Title:

ALKYNE SELECTIVE HYDROGENATION CATALYST AND PREPARATION METHOD THEREFOR, AND SELECTIVE HYDROGENATION METHOD

Document Type and Number:

WIPO Patent Application WO/2022/213370

Kind Code:

A1

Abstract:

An alkyne selective hydrogenation catalyst. The catalyst carrier is alumina or mainly alumina and has a bimodal pore distribution structure, and the specific surface area of the catalyst is 20-50 m2/g, wherein the pore diameter of small pores is 15-50 nm, and the pore diameter of large pores is 80-500 nm. The catalyst at least contains Pd, Ni and Cu, and with the mass of the carrier being 100%, the content of Pd is 0.035-0.08%, the content of Ni is 0.5-5%, and the weight ratio of Cu to Ni is 0.1-1.0, wherein a microemulsion loads Ni, Cu and part of Pd. The particle size of the microemulsion is larger than the maximum pore diameter of the small pores and is smaller than the maximum pore diameter of the large pores; the amount of Pd loaded by the microemulsion is 1/100-1/200 of the sum of the contents of Ni and Cu; and part of Pd is loaded by a solution. The catalyst of the present invention can be used in a selective hydrogenation process of C2 fractions, has good anti-coking performance, and can maintain good hydrogenation activity and excellent selectivity for a relatively long time.

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Inventors:

TAN DUPING (CN)
HE SHENGBAO (CN)
GOU GALIAN (CN)
XIE YUAN (CN)
WANG ZHE (CN)
CHE CHUNXIA (CN)
HAN WEI (CN)
WU WEI (CN)
ZHANG FENG (CN)
WEN HE (CN)

Application Number:

PCT/CN2021/086214

Publication Date:

October 13, 2022

Filing Date:

April 09, 2021

Export Citation:

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Assignee:

PETROCHINA CO LTD (CN)

International Classes:

B01J23/89; B01J35/10; B01J37/02; C07C7/167

Domestic Patent References:

WO2021073640A1	2021-04-22
WO2021073641A1	2021-04-22
WO2015034521A1	2015-03-12

Foreign References:

CN112679301A	2021-04-20
CN104098426A	2014-10-15
CN101433842A	2009-05-20

Attorney, Agent or Firm:

BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)

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