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Spectroscopic Evidence of Extra-Framework Heterometallic Oxo-Clusters in Fe/Ga-ZSM-5 Catalysts
Xia, Haian1; Fleischman, Samuel D.2; Li, Can1; Scott, Susannah L.2,3
刊名JOURNAL OF PHYSICAL CHEMISTRY LETTERS
2011-02-03
DOI10.1021/jz101507s
2期:3页:190-195
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical
研究领域[WOS]Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
关键词[WOS]CHEMICAL-VAPOR-DEPOSITION ; HIGH-TEMPERATURE TREATMENT ; N2O DECOMPOSITION ; ACTIVE-SITES ; FE/ZSM-5 CATALYSTS ; DIOXYGEN ACTIVATION ; NITROUS-OXIDE ; NOX REDUCTION ; IRON SITES ; FE
英文摘要The effect of introducing extra-framework Ga on the local structure of the metal sites in Fe/ZSM-5, resulting in enhanced reactivity toward N(2)O, was investigated using a combination of Raman and X-ray absorption spectroscopies. The Raman spectra indicate an increased abundance of oxo- and/or hydroxo-bridged diiron sites, whereas the Fe K-edge XANES reveals more extensive reduction of Fe(III) to Fe(II). Curvefits of the EXAFS at both the Ca and Fe K-edges are consistent with heterometallic oxo-clusters containing both Ca-Fe and Fe-Fe paths. The spectroscopic evidence suggests a tetranuclear [Fe(2)Ca(2)O(4)(2+)] core, possessing an open dicubane structure.
语种英语
WOS记录号WOS:000287048800011
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被引频次:8[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/321008/142374
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 Calif Santa Barbara, Dept Chem & Biochem, Santa Barbara, CA 93106 USA
3.Univ Calif Santa Barbara, Dept Chem Engn, Santa Barbara, CA 93106 USA
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Xia, Haian,Fleischman, Samuel D.,Li, Can,et al. Spectroscopic Evidence of Extra-Framework Heterometallic Oxo-Clusters in Fe/Ga-ZSM-5 Catalysts[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2011,2(3):190-195.
APA Xia, Haian,Fleischman, Samuel D.,Li, Can,&Scott, Susannah L..(2011).Spectroscopic Evidence of Extra-Framework Heterometallic Oxo-Clusters in Fe/Ga-ZSM-5 Catalysts.JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2(3),190-195.
MLA Xia, Haian,et al."Spectroscopic Evidence of Extra-Framework Heterometallic Oxo-Clusters in Fe/Ga-ZSM-5 Catalysts".JOURNAL OF PHYSICAL CHEMISTRY LETTERS 2.3(2011):190-195.
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