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题名: Palladium supported on carbon nanofiber coated monoliths for three-phase nitrobenzene hydrogenation: Influence of reduction temperature and oxidation pre-treatment
作者: Du, Baolei1, 2, 3;  Su, Hongjiu1, 2;  Wang, Shudong1, 2
关键词: Monolith ;  Pd dispersion ;  Reduction temperature ;  Nitrobenzene conversion ;  Aniline selectivity
刊名: JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
发表日期: 2015-01-25
DOI: 10.1016/j.jiec.2014.05.008
卷: 21, 页:997-1004
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Multidisciplinary ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: Carbon nanofiber (CNF) coated monoliths with a homogeneous and consistent layer were prepared by catalytic decomposition of ethane on Ni particles, and the CNF coated monolith supports were oxidized using different agents to get different oxidation degrees. The as-prepared catalysts were characterized by SEM, TG, Raman spectra, FT-IR, TPD, TPR, CO pulsar and TEM, while the behavior of Pd supported on CNF coated monoliths were tested by liquid phase of nitrobenzene hydrogenation in a continuous flow reactor. For comparison Pd/Al2O3/cordierite was also prepared. It was found that the reduction temperature controlled Pd dispersion, which in turn was responsible for the catalytic activity. A good linear relationship between nitrobenzene conversion and Pd dispersion was observed. Furthermore, Pd/ CNF/cordierite showed higher nitrobenzene conversion compared with Pd/Al2O3/cordierite, indicating CNF was a superior support. The aniline selectivity was related to the amount of surface oxygen groups (SOCs) formed during the oxidation pre-treatment. SOCs, especially carboxylic acid groups, increased as the degree of oxidation deepened, and more amounts of SOCs on CNF surface were responsible for the lower aniline selectivity. (C) 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
关键词[WOS]: PARTICLE-SIZE ;  LIQUID-PHASE ;  NANOTUBES ;  CATALYSTS ;  GOLD
语种: 英语
WOS记录号: WOS:000350079800137
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146037
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
2.Dalian Natl Lab Clean Energy, Dalian 116023, Liaoning, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China

Recommended Citation:
Du, Baolei,Su, Hongjiu,Wang, Shudong. Palladium supported on carbon nanofiber coated monoliths for three-phase nitrobenzene hydrogenation: Influence of reduction temperature and oxidation pre-treatment[J]. JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY,2015,21:997-1004.
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