催化作用
甲醇
锌
铜
桥接(联网)
材料科学
氧化铝
化学工程
纳米颗粒
氧化物
氧化铜
铝
无机化学
纳米技术
化学
冶金
有机化学
计算机科学
计算机网络
工程类
作者
Thomas Lunkenbein,Frank Girgsdies,Timur Kandemir,Nygil Thomas,Malte Behrens,Robert Schlögl,Elias Frei
标识
DOI:10.1002/anie.201603368
摘要
Abstract Long‐term stability of catalysts is an important factor in the chemical industry. This factor is often underestimated in academic testing methods, which may lead to a time gap in the field of catalytic research. The deactivation behavior of an industrially relevant Cu/ZnO/Al 2 O 3 catalyst for the synthesis of methanol is reported over a period of 148 days time‐on‐stream (TOS). The process was investigated by a combination of quasi in situ and ex situ analysis techniques. The results show that ZnO is the most dynamic species in the catalyst, whereas only slight changes can be observed in the Cu nanoparticles. Thus, the deactivation of this catalyst is driven by the changes in the ZnO moieties. Our findings indicate that methanol synthesis is an interfacially mediated process between Cu and ZnO.
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