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BiOx clusters occluded in a ZSM-5 matrix: preparation, characterization, and catalytic behavior in liquid-phase oxidation of hydrocarbons
Dumitriu, D; Barjega, R; Frunza, L; Macovei, D; Hu, T; Xie, Y; Parvulescu, VI; Kaliaguine, S; Hu TD(胡天斗); Xie YN(谢亚宁)
2003
发表期刊JOURNAL OF CATALYSIS
卷号219期号:2页码:337-351
通讯作者Univ Laval, Dept Genie Chim, Quebec City, PQ G1K 7P4, Canada ; Univ Bucharest, Dept Chem Technol & Catalysis, Bucharest 70346, Romania ; Natl Inst Mat Phys, RO-76900 Bucharest, Romania ; Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100039, Peoples R China
文章类型Review
摘要A series of Bi-ZSM-5 containing 4.26, 5.54, and 6.64 wt% bismuth oxide was prepared by introducing Bi during ZSM-5 synthesis. For comparison. 5 wt% Bi (expressed as bismuth oxide)-impregnated ZSM-5 samples were also prepared. These samples were characterized by N-2 adsorption-desorption isotherms at 77 K, XRD, XPS, IR spectroscopy in the lattice vibration range and in the presence of chemisorbed pyridine and CO2 and EXAFS. The characterization data confirmed the occlusion of bismuth oxide clusters in the zeolite pores. An intrinsic acidity due to bismuth oxide clusters was evidenced. This consisted, on one hand, in weak Lewis acid sites, ascribed to coordinatively unsaturated bismuth cations, and, on the other hand, in strong Bronsted acid sites, attributed to boundary Bi (. . .) O-Si linkages. These catalysts were tested in the liquid-phase oxidation of benzene, toluene, and cyclohexane using hydrogen peroxide as oxidizing agent. The results showed that Bi-ZSM-5 catalysts are more active than the reported titanium silicalites, but the efficiency of H2O2 use was quite small, an important part of this being nonselectively decomposed. A good selectivity was observed in cyclohexane oxidation. (C) 2003 Elsevier Inc. All rights reserved.
关键词occluded bi oxide clusters ZSM-5 XPS XRD EXAFS py and CO2-FTIR liquid-phase oxidation benzene toluene cyclohexane
学科领域Chemistry; Engineering
DOI10.1016/S0021-9517(03)00216-1
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语种英语
WOS研究方向Chemistry ; Engineering
WOS类目Chemistry, Physical ; Engineering, Chemical
WOS记录号WOS:000185830900009
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被引频次:45[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/237043
专题多学科研究中心
作者单位中国科学院高能物理研究所
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Dumitriu, D,Barjega, R,Frunza, L,et al. BiOx clusters occluded in a ZSM-5 matrix: preparation, characterization, and catalytic behavior in liquid-phase oxidation of hydrocarbons[J]. JOURNAL OF CATALYSIS,2003,219(2):337-351.
APA Dumitriu, D.,Barjega, R.,Frunza, L.,Macovei, D.,Hu, T.,...&谢亚宁.(2003).BiOx clusters occluded in a ZSM-5 matrix: preparation, characterization, and catalytic behavior in liquid-phase oxidation of hydrocarbons.JOURNAL OF CATALYSIS,219(2),337-351.
MLA Dumitriu, D,et al."BiOx clusters occluded in a ZSM-5 matrix: preparation, characterization, and catalytic behavior in liquid-phase oxidation of hydrocarbons".JOURNAL OF CATALYSIS 219.2(2003):337-351.
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