Catalysis under microscope: Unraveling the mechanism of catalyst de- and re-activation in the continuous dimethyl carbonate synthesis from CO₂ and methanol in the presence of a dehydrating agent

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• 作者：Dragos Stoian^a ; ^b ; Atul Bansode^a ; Francesc Medina^b ; Atsushi Urakawa^a ; ^{aurakawa@iciq.es}
• 关键词：Carbon dioxide ; Methanol ; Dimethyl carbonate ; 2-Cyanopyridine ; Operando study ; Continuous reaction ; Catalyst de-/re-activation
• 刊名：Catalysis Today
• 出版年：2017
• 出版时间：1 April 2017
• 年：2017
• 卷：283
• 期：Complete
• 页码：2-10
• 全文大小：2427 K
• 卷排序：283

文摘

Visually looking into CeO2 catalyst in DMC synthesis from CO2 & methanol (≤30 bar). Using an organic dehydrating agent, thus a complex three-phase boundary was formed. Rapid color change of the catalyst with slower deactivation. Strong binding of 2-picolinamide over CeO2 causes the catalyst deactivation. Mild temperature (300 °C) calcination can reactivate the catalyst completely.