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Relationship between the molybdenum phases and the conversion of n-butane over Mo/HZSM-5
Yuan, SD; Hamid, SBDA; Li, YX; Ying, PL; Xin, Q; Derouane, EG; Li, C
关键词N-c4h10 Mo/hzsm-5 Molybdenum Carbide Moo3 Aromatization
刊名JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
2002-03-11
180期:1-2页:245-258
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]TRANSITION-METAL CARBIDES ; MODIFIED ZSM-5 ZEOLITES ; CATALYTIC PROPERTIES ; OXIDATIVE DEHYDROGENATION ; SURFACE-AREA ; AROMATIZATION ; ISOMERIZATION ; NITRIDES ; PLATINUM ; METHANE
英文摘要The conversion of n-C4H10 was undertaken on MoO3/HZSM-5 catalyst at 773-973K and the phases of molybdenum species were detected by XRD. The XRD results show that bulk MoO3 on HZSM-5 can be readily reduced by n-C4H10 to MoO2 at 773 K and MoO2 can be gradually carburized to molybdenum carbide above 813 K. The molybdenum carbide formed from the carburization of MoO2 with n-C4H10 below 893 K is alpha-MoC1-x with fcc-structure, while hcp-molybdenum carbide formed above 933 K. During the evolution of MoO3 to MoO2 (>773 K) or the carburization of MoO2 to molybdenum carbide (>813 K), deep oxidation, cracking and coke deposition are serious, in particular at higher reaction temperatures, these lead to the poor selectivity to aromatics. Aromatization of n-C4H10 can proceed catalytically on both Mo2C/HZSM-5 and MoO2/HZSM-5, the distribution of the products for the two catalysts is similar below 813 K, but the, activity for Mo2C/HZSM-5 is much higher than that for MoO2/HZSM-5. (C) 2002 Elsevier Science B.V. All rights reserved.
语种英语
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WOS记录号WOS:000174334600025
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被引频次:23[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/321008/85673
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Univ Liverpool, Dept Chem, Leverhulme Ctr Innovat Catalysis, Liverpool L69 3BX, Merseyside, England
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Yuan, SD,Hamid, SBDA,Li, YX,et al. Relationship between the molybdenum phases and the conversion of n-butane over Mo/HZSM-5[J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,2002,180(1-2):245-258.
APA Yuan, SD.,Hamid, SBDA.,Li, YX.,Ying, PL.,Xin, Q.,...&Li, C.(2002).Relationship between the molybdenum phases and the conversion of n-butane over Mo/HZSM-5.JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,180(1-2),245-258.
MLA Yuan, SD,et al."Relationship between the molybdenum phases and the conversion of n-butane over Mo/HZSM-5".JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL 180.1-2(2002):245-258.
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