Chemical looping epoxidation

被引：42

作者：

Chan, Martin S. C. ^{[1
]}

Marek, Ewa ^{[2
]}

Scott, Stuart A. ^{[2
]}

Dennis, J. S. ^{[1
]}

机构：

[1] Univ Cambridge, Dept Chem Engn & Biotechnol, Philippa Fawcett Dr, Cambridge CB3 0AS, England

[2] Univ Cambridge, Dept Engn, Trumpington St, Cambridge CB2 1PZ, England

来源：

JOURNAL OF CATALYSIS | 2018年 / 359卷

基金：

英国工程与自然科学研究理事会;

关键词：

Epoxidation; Chemical looping; Silver; Perovskite; Redox; ETHYLENE EPOXIDATION; PROCESS INTENSIFICATION; SILVER CATALYSTS; OXYGEN; SIZE; AG(111); FUTURE; PHASE; AG;

D O I：

10.1016/j.jcat.2017.12.030

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：

Chemical looping epoxidation of ethylene was demonstrated, whereby the sole oxidant was a solid oxygen carrier, 15 wt% Ag supported on SrFeO3. Ethylene reacted with a bed of carrier particles, without any O-2(g) in the feed, to produce ethylene oxide (EO) and CO2. Following the reduction by the C2H4 of the SrFeO3, it was regenerated by passing air through the bed. The rate of reoxidation was slow, with full regeneration being achieved only by prolonged oxidation at elevated temperatures. A striking synergy between Ag and SrFeO3 was observed solely when they were in intimate contact, suggesting a basis for a proposed reaction mechanism. (C) 2018 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY license.

引用

页码：1 / 7

页数：7

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