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题名: Preparation of NiW/TiO2-(AlO3)-O-2 hydrodesulfurization catalyst with microwave technique
作者: Liu, BJ;  Zha, XJ;  Meng, QM;  Hou, HJ;  Gao, SS;  Zhang, JX;  Sheng, SS;  Yang, WS
关键词: microwave ;  nickel oxide ;  tungsten oxide ;  titania ;  alumina ;  supported catalyst ;  thiophene ;  hydrodesulfurization
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2005-06-01
卷: 26, 期:6, 页:458-462
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: The NiW/TiO2-Al2O3 catalyst samples were prepared by conventional drying method (CON-Cat) and by microwave irradiation method (MW-Cat and MW-Cat1). The catalyst samples werv characterized with NH3-temperature- programmed desorption, Py-FT-IR, temperature-programmed reduction, and temperature-programmed sulfurization techniques. The hydrodesulfurization (HDS) reactivity of thiophene over them was studied in a fixed-bed microreactor. The thiophene conversion over MW-Cat increased from 70.9% at 16 h to 71.8% at 19 h, while the thiophene conversion over MW-Cat1 kept to 71% after 17 h and then increased very slowly. The HDS reactivity over CON-Cat increased slowly after 15 h and the thiophene conversion increased from 63.3% at 15 h to 69.4% at 19 h. The activity difference between CON-Cat and MW-Cat was due to the different sulfidation performance. MW-Cat or MW-Cat1 could be sulfided to sonic extent by using shorter time than CON-Cat. The surface acidic properties of MW-Cat and MW-Cat1 were changed with microwave irradiation power and time. The amounts of weak and medium acid sites in MW-Cat and MW-Cat1 increased, while that of strong acid sites decreased. The strength order of weak and medium acids was MW-Cat < MW-Cat1 < CON-Cat. MW-Cat and MW-Cat1 were favorable for their sulfurization and had higher activity than CON-Cat because more active species were formed in MW-Cat and MW-Cat1 with microwave irradiation. *MW-Cat and MW-Cat1 were more favorable for their reduction than CON-Cat.
关键词[WOS]: NIMO/TIO2-AL2O3 CATALYSTS ;  MIXED OXIDES ;  SUPPORT ;  MO
语种: 英语
WOS记录号: WOS:000230445000008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139716
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.Univ Petr, Key Lab Catalysis, China Natl Petr Corp, Beijing 102249, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Liu, BJ,Zha, XJ,Meng, QM,et al. Preparation of NiW/TiO2-(AlO3)-O-2 hydrodesulfurization catalyst with microwave technique[J]. CHINESE JOURNAL OF CATALYSIS,2005,26(6):458-462.
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