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Enhancement on the hydrothermal stability of ZSM-5 zeolites by the cooperation effect of exchanged lanthanum and phosphoric species
Yang, G; Zhuang, JQ; Wang, Y; Zhou, DH; Yang, MQ; Liu, XC; Han, YW; Bao, XH
KeywordZeolite Hydrothermal Stability Density Functional Electrostatic Potential Cooperation
Source PublicationJOURNAL OF MOLECULAR STRUCTURE
2005-03-04
DOI10.1016/j.molstruc.2004.11.018
Volume737Issue:2-3Pages:271-276
Indexed BySCI
SubtypeArticle
Funding Project502
Contribution Rank1;1
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical
WOS Research AreaChemistry
WOS KeywordDENSITY-FUNCTIONAL THEORY ; CATALYTIC CRACKING ; ALUMINUM ; H-ZSM-5
AbstractIt was explored by density functional calculations that exchanged La or P species exert great influence on the local Al sites as well as on the adjacent exchanged species. In partially exchanged La- or P/H-ZSM-5 zeolite, some of the Al sites will fall off from the zeolite framework even more easily than in H-form ZSM-5, consistent with our XRF experiments. However, when exchanged by both La and P species, Al at either of the two exchanged sites shows better stability compared to H-from. zeolite. La and P species will interact strongly with each other, as evidenced by the charge donation process and the shortening of P-O-1 bond length. It was just the cooperation of La and P species that enabled RSCC catalysts worked normally under severe conditions. (C) 2004 Elsevier B.V. All rights reserved.
Language英语
URL查看原文
WOS IDWOS:000227082800025
Citation statistics
Cited Times:31[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/81737
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, Peoples R China
Recommended Citation
GB/T 7714
Yang, G,Zhuang, JQ,Wang, Y,et al. Enhancement on the hydrothermal stability of ZSM-5 zeolites by the cooperation effect of exchanged lanthanum and phosphoric species[J]. JOURNAL OF MOLECULAR STRUCTURE,2005,737(2-3):271-276.
APA Yang, G.,Zhuang, JQ.,Wang, Y.,Zhou, DH.,Yang, MQ.,...&Bao, XH.(2005).Enhancement on the hydrothermal stability of ZSM-5 zeolites by the cooperation effect of exchanged lanthanum and phosphoric species.JOURNAL OF MOLECULAR STRUCTURE,737(2-3),271-276.
MLA Yang, G,et al."Enhancement on the hydrothermal stability of ZSM-5 zeolites by the cooperation effect of exchanged lanthanum and phosphoric species".JOURNAL OF MOLECULAR STRUCTURE 737.2-3(2005):271-276.
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