查找使用阿拉丁产品的科研文献

CO2 Hydrogenation to Produce Methanol over Fe, Ga and Mo Modified ZnCu-MOF and ZnCuAl-LDH Composite Catalysts

Li Ziyuan,Luo Mingsheng,Yang Zhi,Cui Xiaoteng,Yang Wenshuai,Xia Lingman,Shao Changke,Rahman Roshni

To effectively mitigate the global warming issue, it is crucial to develop advanced technologies that can significantly reduce carbon dioxide emissions. CO 2 hydrogenation for methanol synthesis is increasingly recognized as a promising chemical approach for the green-house gas utilization. In this study, we present a highly active, selective and stable Mo modified ZnCu-MOF and ZnCuAl-LDH composite catalysts, which achieves 18% CO 2 conversion and 70% methanol selectivity at 230 °C, 3.0 MPa at a space velocity of 3600 mL·g cat −1 ·h −1 . Furthermore, after 140 h of operation, the catalyst demonstrates superior durability. In-situ DRIFT results reveal that this CO 2 hydrogenation reaction over the ZnCu-MOF and ZnCuAl-LDH composite catalysts proceeds through key intermediate formate species, ultimately leading to the methanol formation. In contrast, the Mo-modified catalysts facilitate the CO insertion reaction (CO 2  → CO*, CO* + *CH x  → CH 3 OH), thereby enhancing the methanol yield. Graphical