Xie Shaoqu, Zhang Wanli, Lan Xingying, Lin Hongfei
The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA, 99164, USA.
State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, 102249, P. R. China.
ChemSusChem. 2020 Dec 7;13(23):6141-6159. doi: 10.1002/cssc.202002087. Epub 2020 Nov 11.
Excessive carbon dioxide (CO ) emissions have been subject to extensive attention globally, since an enhanced greenhouse effect (global warming) owing to a high CO concentration in the atmosphere could lead to severe climate change. The use of solar energy and other renewable energy to produce low-cost hydrogen, which is used to reduce CO to produce bulk chemicals such as methanol, is a sustainable strategy for reducing carbon dioxide emissions and carbon resources. CO conversion into methanol is exothermic, so that low temperature and high pressure are favorable for methanol formation. CO is usually captured and recovered in the liquid phase. Herein, the emerging technologies for the hydrogenation of CO to methanol in the condensed phase are reviewed. The development of homogeneous and heterogeneous catalysts for this important hydrogenation reaction is summarized. Finally, mechanistic insight on CO 's conversion into methanol over different catalysts is discussed by taking the available reaction pathways into account.
由于大气中高浓度的二氧化碳（CO₂）导致温室效应增强（全球变暖），进而可能引发严重的气候变化，过量的二氧化碳排放已受到全球广泛关注。利用太阳能和其他可再生能源生产低成本氢气，再用氢气将二氧化碳还原以生产甲醇等大宗化学品，是减少二氧化碳排放和碳资源的可持续策略。二氧化碳转化为甲醇是放热反应，因此低温高压有利于甲醇生成。二氧化碳通常在液相中被捕获和回收。在此，对凝聚相中二氧化碳加氢制甲醇的新兴技术进行综述。总结了用于这一重要加氢反应的均相和多相催化剂的发展情况。最后，通过考虑现有的反应途径，讨论了不同催化剂上二氧化碳转化为甲醇的机理。
