In situ DRIFTS study on the partial oxidation of ethylene over Co-ZSM-5 catalyst

被引：16

作者：

Chen, Xiao-Mei ^{[1
]}

Yang, Xue-Feng ^{[1
]}

Zhu, Ai-Min ^{[1
]}

Fan, Hong-Yu ^{[1
]}

Wang, Xin-Kui ^{[1
]}

Xin, Qin ^{[2
]}

Zhou, Xin-Rui ^{[3
]}

Shi, Chuan ^{[1
,3
]}

机构：

[1] Dalian Univ Technol, Lab Plasma Phys Chem, Dalian 116024, Peoples R China

[2] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

[3] Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116012, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2009年 / 10卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Ethylene; Partial oxidation; Formate; Active sites; Co-ZSM-5; CO-H-MFI; FT-IR; AG CATALYSTS; NO REDUCTION; ACTIVE-SITES; REACTIVITY; SCR; CH4; COADSORPTION; ZEOLITE;

D O I：

10.1016/j.catcom.2008.09.028

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The interaction of C2H4 and C2H4 + O-2 with Co-ZSM-5 has been studied by in situ diffuse reflectance infrared fourier transform spectroscopy (DRIFTS). XRD, UV-vis and H-2-TPR were used for characterizing the Co-ZSM-5 samples. DRIFTS results showed that a partial oxidation of ethylene over Co-ZSM-5 occurred at definite temperatures( >= 250 degrees C) leading to the formation of formate species in the presence or absence of gas phase oxygen. Investigation on active sites in Co-ZSM-5 by using NO as probe molecules revealed that a reduction of Co3+ to Co2+ occurred during reaction and Co3+ (presenting in Co3O4) were primarily responsible for the oxidation of ethylene. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：428 / 432

页数：5

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