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题名: Ru/Al2O3-ZrO2-NiO/cordierite monolithic catalysts for selective hydrogenation of benzene
作者: Wang, Minghao1, 2;  Su, Hongjiu1;  Zhou, Jin1;  Wang, Shudong1
关键词: Monolithic catalyst ;  Washcoat ;  Benzene ;  Cyclohexene ;  Selective hydrogenation ;  Spinel ;  Zirconia ;  Nickel oxide
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2013-08-01
DOI: 10.1016/S1872-2067(12)60609-3
卷: 34, 期:8, 页:1543-1550
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: Ru/Al2O3-ZrO2-NiO/cordierite catalysts with an egg-shell-like Ru distribution were prepared by conventional incipient wetness impregnation and ammonia gas absorption deposition. The performance of the catalysts in a modified monolithic fixed-bed reactor was evaluated. The catalysts exhibited good selectivity and stability. Importantly, a maximum yield of 24.7% was achieved at a low concentration of ZnSO4 (0.5 wt%). The catalysts were characterized by N-2 adsorption, X-ray diffraction, inductively coupled plasma-atomic emission spectroscopy, optical microscopy, and scanning electron microscopy/energy-dispersive X-ray analysis. The introduction of NiO resulted in the formation of NiAl2O4 phase during calcination at 1373 K, reducing the proportion of small pores. Meanwhile, the presence of ZrO2 enhanced the sintering resistance of the coating, and moderate surface area was retained after calcination. The egg-shell distribution of Ru, thin layer thickness indicating short diffusion length, small proportion of nanosized pores (e.g., 1-4 nm), moderate specific surface area, and narrow pore size distribution to facilitate Ru dispersion are thought to be important factors controlling the behavior of the present monolithic catalysts. (C) 2013, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier BAT. All rights reserved.
关键词[WOS]: LIQUID-PHASE HYDROGENATION ;  AQUEOUS SALT-SOLUTION ;  RUTHENIUM CATALYSTS ;  CYCLOHEXENE ;  PERFORMANCE
语种: 英语
WOS记录号: WOS:000323239600010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/137641
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 Natl Lab Clean Energy, Dalian 116023, Liaoning, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Wang, Minghao,Su, Hongjiu,Zhou, Jin,et al. Ru/Al2O3-ZrO2-NiO/cordierite monolithic catalysts for selective hydrogenation of benzene[J]. CHINESE JOURNAL OF CATALYSIS,2013,34(8):1543-1550.
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