Li Hangjie, Fang Wei, Wang Ling-Xiang, Liu Yifeng, Liu Lujie, Sun Tulai, Liao Ciqi, Zhu Yihan, Wang Liang, Xiao Feng-Shou
Key Lab of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310028, China.
Key Laboratory of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310028, China.
Innovation (Camb). 2023 May 22;4(4):100445. doi: 10.1016/j.xinn.2023.100445. eCollection 2023 Jul 10.
The hydrogenation of CO to methanol, which is restricted by water products, requires a selective removal of water from the reaction system. Here, we show that physically combining hydrophobic polydivinylbenzene with a copper catalyst supported by silica can increase methanol production and CO conversion. Mechanistic investigation reveals that the hydrophobic promoter could hinder the oxidation of copper surface by water, maintaining a small fraction of metallic copper species on the copper surface with abundant Cu, resulting in high activity for the hydrogenation. Such a physically mixed catalyst survives the continuous test for 100 h owing to the thermal stability of the polydivinylbenzene promoter.
受水产物限制的CO加氢制甲醇反应需要从反应体系中选择性地除去水。在此，我们表明，将疏水性聚二乙烯基苯与二氧化硅负载的铜催化剂物理结合，可以提高甲醇产量和CO转化率。机理研究表明，疏水促进剂可以阻碍水对铜表面的氧化，使铜表面上一小部分金属铜物种与大量的Cu共存，从而产生高加氢活性。由于聚二乙烯基苯促进剂的热稳定性，这种物理混合催化剂在连续测试100小时后仍能保持活性。
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