Zinc Hinders Deactivation of Copper-Mordenite: Dimethyl Ether Carbonylation

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• 作者：Allen A.C. Reule ; Natalia Semagina
• 刊名：ACS Catalysis
• 出版年：2016
• 出版时间：August 5, 2016
• 年：2016
• 卷：6
• 期：8
• 页码：4972-4975
• 全文大小：350K
• 年卷期：0
• ISSN：2155-5435

文摘

A plethora of previously unimaginable low-temperature C₁ and C₂ valorization reactions have become possible after the discovery of metal-exchanged solid-acid catalysts, with the most promising candidate being copper-mordenite. We show the dramatic effect of zinc addition to copper-exchanged mordenite in maintaining high Cu dispersion and reducing the catalyst poisoning as it relates to carbonylation of dimethyl ether to methyl acetate. Zinc maintains 90%+ selectivity even during deactivation versus 60% for the Cu-mordenite, which leads to 6-fold higher product yield. The concept of Zn addition is recommended for further exploration in the conversion of methane to methanol or acetic acid.