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In situ X-ray diffraction study of VOx and MoOx dispersion on Al2O3
Huang, XM; Tang, XF; Xu, YD; Shen, WJ
KeywordIn Situ X-ray Diffraction Vanadium Oxide Molybdenum Oxide Alumina Supported Catalyst Dispersion
Source PublicationCHINESE JOURNAL OF CATALYSIS
2006-04-01
Volume27Issue:4Pages:324-328
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
WOS Research AreaChemistry ; Engineering
WOS KeywordCATALYTIC-PROPERTIES ; SELECTIVE OXIDATION ; FORMALDEHYDE ; SUPPORT ; OXIDES
AbstractThe dispersion of VOx and MoOx on Al2O3 was investigated by means of in situ X-ray diffraction. For the VOx/Al2O3 catalyst prepared by the impregnation method, the precursor of (NH4)(2)[VO(C2O4)(2)] dispersed uniformly on the support. (NH4)(2)[VO(C2O4)(2)] began to decompose at 200 degrees C, the decomposition finished at 400 degrees C, and the obtained VOx species dispersed through the HxV2O5 phase. For the VOx/Al2O3 catalyst prepared by mechanical grinding, although there was an interaction between V2O5 and Al2O3, no obvious spontaneous dispersion phenomenon was observed; thus the dispersion of VO, was rather poor as compared with the impregnated catalyst. For the MoOx/Al2O3 Catalysts prepared by impregnation and mechanical grinding, the MoO3 phase resulted from (NH4)(6)Mo2O24 center dot 4H(2)O decomposition was not completely the same, and the contents of (040) and (060) crystal planes were different.
Language英语
WOS IDWOS:000237431800010
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/140234
Collection中国科学院大连化学物理研究所
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China
Recommended Citation
GB/T 7714
Huang, XM,Tang, XF,Xu, YD,et al. In situ X-ray diffraction study of VOx and MoOx dispersion on Al2O3[J]. CHINESE JOURNAL OF CATALYSIS,2006,27(4):324-328.
APA Huang, XM,Tang, XF,Xu, YD,&Shen, WJ.(2006).In situ X-ray diffraction study of VOx and MoOx dispersion on Al2O3.CHINESE JOURNAL OF CATALYSIS,27(4),324-328.
MLA Huang, XM,et al."In situ X-ray diffraction study of VOx and MoOx dispersion on Al2O3".CHINESE JOURNAL OF CATALYSIS 27.4(2006):324-328.
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