中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Strong effect of transitional metals on the sulfur resistance of Pd/HY-Al2O3 catalysts for aromatic hydrogenation

文献类型:期刊论文

作者Hu, LJ; Xia, GF; Qu, LL; Li, C; Xin, Q; Li, DD
刊名journal of molecular catalysis a-chemical
出版日期2001-06-12
卷号171期号:1-2页码:169-179
关键词palladium bimetallic catalyst Y-zeolite sulfur resistance aromatic hydrogenation
英文摘要in order to improve the sulfur resistance of noble metal catalysts in the aromatic hydrogenation of diesel fuel, the alloying effect of non-noble metals with pd was studied. toluene hydrogenation over pd and pd-m bimetallic catalysts (m = cr, w,la, mn, mo, ag) on a mixed hy-al2o3 support was investigated in the presence of 3000 ppm sulfur as thiophene in the feedstock. the results showed that the addition of the second metals strongly affected the activity of toluene hydrogenation, which suggests that the sulfur resistibility of pd-m bimetallic catalysts is much different from single pd. la, mn, mo and ag decreased the sulfur resistance of the palladium catalysts. for example, the toluene conversion at 553 k was observed to decrease sharply from 39.4 wt.% on pd to 1.6 wt.% on pd-ag, which is by a factor of 25. one of the important findings in this article is that cr and w increase hydrogenation activity of pd catalysts. the reactions occurring on these catalysts include hydrogenation, isomerization and hydrocracking, the addition of the second metals has no noticeable effects on the hydrogenation and isomerization selectivity, but it slightly suppresses hydrocracking reactions. the four typical catalysts, pd-cr, pd-w, pd-ag and pd were characterized by infrared (ir) spectroscopy of pyridine and co. lr spectra of co revealed the strong interaction between pd and the second metal as cr, w and ag (or their oxide), indicating that the improvement in sulfur resistance originates from electron-deficient pd with the addition of second metals. (c) 2001 elsevier science b.v. all rights reserved.
WOS标题词science & technology ; physical sciences
类目[WOS]chemistry, physical
研究领域[WOS]chemistry
关键词[WOS]pd-pt catalysts ; supported platinum catalysts ; gas-phase hydrogenation ; toluene hydrogenation ; bimetallic catalysts ; zeolite catalysts ; usy zeolite ; benzene ; silica ; hydrodesulfurization
收录类别SCI
原文出处true
语种英语
WOS记录号WOS:000169317100018
公开日期2010-11-30
源URL[http://159.226.238.44/handle/321008/92119]  
专题大连化学物理研究所_中国科学院大连化学物理研究所
作者单位1.Chian Petrochem Corp, Res Inst Petr Proc, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
推荐引用方式
GB/T 7714
Hu, LJ,Xia, GF,Qu, LL,et al. Strong effect of transitional metals on the sulfur resistance of Pd/HY-Al2O3 catalysts for aromatic hydrogenation[J]. journal of molecular catalysis a-chemical,2001,171(1-2):169-179.
APA Hu, LJ,Xia, GF,Qu, LL,Li, C,Xin, Q,&Li, DD.(2001).Strong effect of transitional metals on the sulfur resistance of Pd/HY-Al2O3 catalysts for aromatic hydrogenation.journal of molecular catalysis a-chemical,171(1-2),169-179.
MLA Hu, LJ,et al."Strong effect of transitional metals on the sulfur resistance of Pd/HY-Al2O3 catalysts for aromatic hydrogenation".journal of molecular catalysis a-chemical 171.1-2(2001):169-179.

入库方式: OAI收割

来源:大连化学物理研究所

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