Selective oxidation of ethanol to ethylene oxide with a dual-layer concept

被引：6

作者：

Himmelmann, Robin ^{[1
]}

Otterstaetter, Robin ^{[2
]}

Franke, Oliver ^{[2
]}

Brand, Stefan ^{[3
]}

Wachsen, Olaf ^{[3
]}

Mestl, Gerhard ^{[4
]}

Effenberger, Franz ^{[5
]}

Klemm, Elias ^{[1
,6
]}

机构：

[1] Univ Stuttgart, Inst Tech Chem, Pfaffenwaldring 55, D-70569 Stuttgart, Germany

[2] Clariant AG, Semmelweisstr 1, D-82152 Planegg, Germany

[3] Clariant AG, Bruningstr 50, D-65929 Frankfurt, Germany

[4] Clariant AG, Waldheimer Str 13, D-83052 Bruckmuhl, Germany

[5] Univ Stuttgart, Inst Organ Chem, Pfaffenwaldring 55, D-70569 Stuttgart, Germany

[6] Roche Diagnost GmbH, Nonnenwald 2, D-83277 Penzberg, Germany

来源：

CATALYSIS COMMUNICATIONS | 2022年 / 167卷

关键词：

Green ethylene oxide; Bio-based ethylene oxide; Ethanol to ethylene oxide; Dual-layer concept; SILVER; EPOXIDATION; CATALYSTS; KINETICS; AG; CONVERSION; OLEFINS; COPPER; AU;

D O I：

10.1016/j.catcom.2022.106424

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：

Ethylene oxide is mainly produced from fossil-based ethylene. Only minor amounts of EO are based on renewable ethanol in a three-step process consisting of an ethanol dehydration step, an ethylene purification step, and an epoxidation step. We herein present a new one-step process for the selective oxidation of ethanol to ethylene oxide by a novel dual-layer concept without intermediate ethylene purification. Ethanol is dehydrated in one reactor on a first catalyst bed to ethylene which is subsequently epoxidized over a silver catalyst. The dual-layer arrangement allowed stable operation over more than 60 h and state-of-the-art conversions and selectivities were obtained.

引用

页数：5

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