Chemical looping epoxidation
Chemical looping epoxidation
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DOI：
10.1016/j.jcat.2017.12.030
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发表时间：
2018-03-01
影响因子：
7.3
通讯作者：
Dennis, J. S.
中科院分区：
文献类型：
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作者：
Chan, Martin S. C.;Marek, Ewa;Dennis, J. S.
乙烯的化学循环环氧化被证明，其中唯一的氧化剂是固体氧载体，15重量%的银负载在SrFeO 3上。乙烯与载体颗粒床反应，在进料中没有任何O-2（g），以产生环氧乙烷（EO）和CO2。在SrFeO 3被C2 H4还原之后，通过使空气通过床使其再生。再氧化的速率是缓慢的，只有在高温下长时间氧化才能实现完全再生。Ag和SrFeO 3之间的惊人的协同作用，观察到只有当它们在密切接触，提出了一个建议的反应机制的基础。(C)2018作者爱思唯尔公司出版。这是CC BY许可下的开放获取文章。
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.