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Distribution of Mo in Mo/ZSM-5 catalyst prepared by impregnation method
Li, B; Chen, HY; Li, SJ; Li, N; Bao, XH; Lin, BX
关键词Molybdenum Zsm-5 Zeolite Impregnation Distribution State
刊名CHINESE JOURNAL OF CATALYSIS
2005-09-01
26期:9页:769-774
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
关键词[WOS]CRYSTAL-STRUCTURE ; METHANE ; AROMATIZATION ; DEHYDROGENATION ; CONVERSION ; MO/HZSM-5 ; HZSM-5 ; SITES
英文摘要The Mo/ZSM-5 catalyst sample with 6 % Mo loading prepared by impregnation method has been proved to be the best catalyst for methane non-oxidative aromatization. In this paper, the distribution of Mo species in 6 % Mo/ZSM-5 was focused on. The crystalline structure of Mo/ZSM-5 was determined by XRD and refined by Rietveld method. The results revealed that the Mo species had three states in the Mo/ZSM-5 catalyst. One kind of Mo species, [Mo5O12](6+), situated at the channel of ZSM-5 zeolite. There was about 0.4 of [Mo5O12](6+) unit per cell of ZSM-5 zeolite on the average. These units neutralized a number of B acid sites. As a result, the B acid sites of the Mo/ZSM-5 catalyst decreased obviously compared with the parent HZSM-5 zeolite By contraries, the amount of L acid sites increased slightly in the Mo/ZSM-5 catalyst. The Mo in [Mo5O12](6+) units was about 3.03 % of Mo/ZSM-5 crystals in mass fraction. The other two kinds of Mo species, alpha-MoO3 and amorphous Mo oxides, distributed on the external surface of the Mo/ZSM-5 crystal and modified it.
语种英语
WOS记录号WOS:000232474800011
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/139697
专题中国科学院大连化学物理研究所
作者单位1.Peking Univ, Inst Phys Chem, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
3.Guangxi Univ, Coll Chem & Chem Engn, Nanning 530004, Peoples R China
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Li, B,Chen, HY,Li, SJ,et al. Distribution of Mo in Mo/ZSM-5 catalyst prepared by impregnation method[J]. CHINESE JOURNAL OF CATALYSIS,2005,26(9):769-774.
APA Li, B,Chen, HY,Li, SJ,Li, N,Bao, XH,&Lin, BX.(2005).Distribution of Mo in Mo/ZSM-5 catalyst prepared by impregnation method.CHINESE JOURNAL OF CATALYSIS,26(9),769-774.
MLA Li, B,et al."Distribution of Mo in Mo/ZSM-5 catalyst prepared by impregnation method".CHINESE JOURNAL OF CATALYSIS 26.9(2005):769-774.
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