DICP OpenIR
On the surface sites Of MOP/SiO2 catalyst under sulfiding conditions: IR spectroscopy and catalytic reactivity studies
Wu, ZL; Sun, FX; Wu, WC; Feng, ZC; Liang, CH; Wei, ZB; Li, C
关键词Molybdenum Phosphide Catalyst Sulfur Hydrodesulfurization Ir Spectroscopy Co Adsorption
刊名JOURNAL OF CATALYSIS
2004-02-15
DOI10.1016/j.jcat.2003.10.019
222期:1页:41-52
收录类别SCI
文章类型Article
项目归属503
产权排名1;1
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]TRANSITION-METAL PHOSPHIDES ; MAGNETIC-RESONANCE SPECTROSCOPY ; SUPPORTED MOLYBDENUM CARBIDE ; TUNGSTEN PHOSPHIDE ; FT-IR ; THIOPHENE HYDRODESULFURIZATION ; HYDROPROCESSING CATALYSTS ; NITRIDE CATALYSTS ; ALUMINA CATALYST ; CARBON-MONOXIDE
英文摘要The surface sites of MoP/SiO2 catalysts and their evolution under sulfiding conditions were characterized by IR spectroscopy using CO as the probe molecule. The HDS activities of thiophene were measured on the MoP/SiO2 catalyst that was subjected to different sulfidation and reactivation pretreatments. Cus Modelta+ (0 < delta less than or equal to 2) sites are probed on the surface of fresh MoP/SiO2 by molecularly adsorbed CO, exhibiting a characteristic IR band at 2045 cm(-1). The surface of MoP/SiO2 is gradually sulfided in HDS reactions, as revealed by the shift of the IR band at 2045 to ca. 2100 cm(-1). Although the surface of a MoP/SiO2 catalyst becomes partially sulfided, the HDS activity tests show that MoP/SiO2 is fairly stable in the initial stage of the HDS reaction, providing further evidence that molybdenum phosphide is a promising catalytic material for industrial HDS reactions. Two kinds of surface sulfur species are formed on the sulfided catalyst: reversibly and irreversibly bonded sulfur species. The MoP/SiO2 catalyst remains stable in the HDS of thiophene because most sulfur species formed under HDS conditions are reversibly bonded on the catalyst surface. A detrimental effect of presulfidation on the HDS activity is observed for the MoP/SiO2 catalyst treated by H2S/H-2 at temperatures higher than 623 K, which is ascribed to the formation of a large amount of the irreversibly bonded sulfur species. The irreversibly sulfided catalyst can be completely regenerated by an oxidation and a subsequent reduction under mild conditions. (C) 2003 Elsevier Inc. All rights reserved.
语种英语
原文出处查看原文
WOS记录号WOS:000188943200005
引用统计
被引频次:60[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/82657
专题中国科学院大连化学物理研究所
作者单位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
Wu, ZL,Sun, FX,Wu, WC,et al. On the surface sites Of MOP/SiO2 catalyst under sulfiding conditions: IR spectroscopy and catalytic reactivity studies[J]. JOURNAL OF CATALYSIS,2004,222(1):41-52.
APA Wu, ZL.,Sun, FX.,Wu, WC.,Feng, ZC.,Liang, CH.,...&Li, C.(2004).On the surface sites Of MOP/SiO2 catalyst under sulfiding conditions: IR spectroscopy and catalytic reactivity studies.JOURNAL OF CATALYSIS,222(1),41-52.
MLA Wu, ZL,et al."On the surface sites Of MOP/SiO2 catalyst under sulfiding conditions: IR spectroscopy and catalytic reactivity studies".JOURNAL OF CATALYSIS 222.1(2004):41-52.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
20042X921665T7.pdf(310KB) 开放获取--请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Wu, ZL]的文章
[Sun, FX]的文章
[Wu, WC]的文章
百度学术
百度学术中相似的文章
[Wu, ZL]的文章
[Sun, FX]的文章
[Wu, WC]的文章
必应学术
必应学术中相似的文章
[Wu, ZL]的文章
[Sun, FX]的文章
[Wu, WC]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。