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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
关键词Zeolite Hydrothermal Stability Density Functional Electrostatic Potential Cooperation
刊名JOURNAL OF MOLECULAR STRUCTURE
2005-03-04
DOI10.1016/j.molstruc.2004.11.018
737期:2-3页:271-276
收录类别SCI
文章类型Article
项目归属502
产权排名1;1
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]DENSITY-FUNCTIONAL THEORY ; CATALYTIC CRACKING ; ALUMINUM ; H-ZSM-5
英文摘要It 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.
语种英语
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WOS记录号WOS:000227082800025
引用统计
被引频次:30[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/321008/81737
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
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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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