Indium Oxide as a Superior Catalyst for Methanol Synthesis by CO2 Hydrogenation

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• 作者：Oliver Martin ; Dr. Antonio J. Mart&#237 ; n ; Dr. Cecilia Mondelli ; Dr. Sharon Mitchell ; Dr. Takuya F. Segawa ; Dr. Roland Hauert ; Dr. Charlotte Drouilly ; Dr. Daniel Curulla-Ferré ; and Prof. Javier Pé ; rez-Ram&#237 ; rez
• 刊名：Angewandte Chemie
• 出版年：2016
• 出版时间：May 17, 2016
• 年：2016
• 卷：128
• 期：21
• 页码：6369-6373
• 全文大小：1180K
• ISSN：1521-3757

文摘

Methanol synthesis by CO₂ hydrogenation is attractive in view of avoiding the environmental implications associated with the production of the traditional syngas feedstock and mitigating global warming. However, there still is a lack of efficient catalysts for such alternative processes. Herein, we unveil the high activity, 100 % selectivity, and remarkable stability for 1000 h on stream of In₂O₃ supported on ZrO₂ under industrially relevant conditions. This strongly contrasts to the benchmark Cu-ZnO-Al₂O₃ catalyst, which is unselective and experiences rapid deactivation. In-depth characterization of the In₂O₃-based materials points towards a mechanism rooted in the creation and annihilation of oxygen vacancies as active sites, whose amount can be modulated in situ by co-feeding CO and boosted through electronic interactions with the zirconia carrier. These results constitute a promising basis for the design of a prospective technology for sustainable methanol production.