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Layered Double Hydroxides Derived ZnO-Al2O3 Supported Pd-Ag Catalysts for Selective Hydrogenation of Acetylene
Gao, Xiaoping; Zhou, Yanan; Jing, Fangli; Luo, Jingjie; Huang, Qingsong; Chu, Wei; Jing, FL (reprint author), Sichuan Univ, Sch Chem Engn, Chengdu 610065, Sichuan, Peoples R China.; Jing, FL (reprint author), Sichuan Univ, Inst New Energy & Low Carbon Technol, Chengdu 610207, Sichuan, Peoples R China.
2017-06-01
Source PublicationCHINESE JOURNAL OF CHEMISTRY
ISSN1001-604X
Volume35Issue:6Pages:1009-1015
AbstractZnO-Al2O3 derived from layered double hydroxides (ZnAl-LDH) was successfully applied for dispersion of Pd-Ag bimetallic catalysts for the selective hydrogenation of acetylene to ethylene and the Pd-Ag/ZnO-Al2O3 catalyst showed the best catalytic performance among the prepared samples. It was found that the catalyst carrier of ZnO-Al2O3 metal-oxides derived form ZnAl-LDH could significantly suppress the over-hydrogenation of acetylene to obtain the relatively higher selectivity of ethylene. The introduction of Ag restricted efficiently the formation of coke because of the oligomerization reaction, which was further evidenced by thermal gravimetric analysis. The selectivity towards ethylene was in the order of Pd-Ag/ZnO-Al2O3>Pd/ZnO-Al2O3>Pd-Ag/Al2O3>Pd/Al2O3 at a high conversion level. As the thermal gravimetric and differential temperature analysis (TG-DTA) revealed, Pd-Ag intermetallic catalyst on the ZnO-Al2O3 support showed less coke formation.; ZnO-Al2O3 derived from layered double hydroxides (ZnAl-LDH) was successfully applied for dispersion of Pd-Ag bimetallic catalysts for the selective hydrogenation of acetylene to ethylene and the Pd-Ag/ZnO-Al2O3 catalyst showed the best catalytic performance among the prepared samples. It was found that the catalyst carrier of ZnO-Al2O3 metal-oxides derived form ZnAl-LDH could significantly suppress the over-hydrogenation of acetylene to obtain the relatively higher selectivity of ethylene. The introduction of Ag restricted efficiently the formation of coke because of the oligomerization reaction, which was further evidenced by thermal gravimetric analysis. The selectivity towards ethylene was in the order of Pd-Ag/ZnO-Al2O3>Pd/ZnO-Al2O3>Pd-Ag/Al2O3>Pd/Al2O3 at a high conversion level. As the thermal gravimetric and differential temperature analysis (TG-DTA) revealed, Pd-Ag intermetallic catalyst on the ZnO-Al2O3 support showed less coke formation.
description.department[gao, xiaoping ; zhou, yanan ; jing, fangli ; huang, qingsong ; chu, wei] sichuan univ, sch chem engn, chengdu 610065, sichuan, peoples r china ; [gao, xiaoping ; jing, fangli ; chu, wei] sichuan univ, inst new energy & low carbon technol, chengdu 610207, sichuan, peoples r china ; [luo, jingjie] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, liaoning, peoples r china
KeywordZnal-ldh Pd Catalyst Ag Promoter Acetylene Selective Hydrogenation High Selectivity
Subject AreaChemistry, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China [21476145]; China Cheng Da Engineering Co., Ltd
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78101
Collection中国科学院金属研究所
Corresponding AuthorJing, FL (reprint author), Sichuan Univ, Sch Chem Engn, Chengdu 610065, Sichuan, Peoples R China.; Jing, FL (reprint author), Sichuan Univ, Inst New Energy & Low Carbon Technol, Chengdu 610207, Sichuan, Peoples R China.
Recommended Citation
GB/T 7714
Gao, Xiaoping,Zhou, Yanan,Jing, Fangli,et al. Layered Double Hydroxides Derived ZnO-Al2O3 Supported Pd-Ag Catalysts for Selective Hydrogenation of Acetylene[J]. CHINESE JOURNAL OF CHEMISTRY,2017,35(6):1009-1015.
APA Gao, Xiaoping.,Zhou, Yanan.,Jing, Fangli.,Luo, Jingjie.,Huang, Qingsong.,...&Jing, FL .(2017).Layered Double Hydroxides Derived ZnO-Al2O3 Supported Pd-Ag Catalysts for Selective Hydrogenation of Acetylene.CHINESE JOURNAL OF CHEMISTRY,35(6),1009-1015.
MLA Gao, Xiaoping,et al."Layered Double Hydroxides Derived ZnO-Al2O3 Supported Pd-Ag Catalysts for Selective Hydrogenation of Acetylene".CHINESE JOURNAL OF CHEMISTRY 35.6(2017):1009-1015.
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