The chemistry of the oxychlorination catalyst: an in situ, time-resolved XANES study

被引：0
|
作者：
Lamberti, C
Prestipino, C
Bonino, F
Capello, L
Bordiga, S
Spoto, G
Zecchina, A
Moreno, SD
Cremaschi, B
Garilli, M
Marsella, A
Carmello, D
Vidotto, S
Leofanti, G
机构：
[1] Dipartimento Chim IFM, I-10125 Turin, Italy
[2] Univ Turin, INSTM Res Unit, I-10124 Turin, Italy
[3] European Synchrotron Radiat Facil, F-38043 Grenoble, France
[4] EVC Technol Ctr, I-30175 Venice, Italy
[5] Univ Turin, INFM, UdR, I-10124 Turin, Italy
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2002年 / 41卷 / 13期
关键词：
D O I：
10.1002/1521-3773(20020703)41:13<2341::AID-ANIE2341>3.0.CO;2-P
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The rate-determining step of the ethylene oxychlorination reaction on CuCl2/γ-Al2O3 catalyst could be identified by an in situ, time-resolved XANES study. According to these data (see figure; E = photon energy) and the simultaneously determined catalyst activity, the rate-determining step is the oxidation of CuCl. The dopant potassium chloride, added to the industrial catalysts, decreases the rate of the reduction step, which becomes the rate-determining step for the KCl/CuCl2/γ-Al2O3 catalyst.
引用
收藏
页码：2341 / 2344
页数：4
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