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Efficient light-driven CO2 hydrogenation on Ru/CeO2 catalysts

机译：高效light-driven二氧化碳加氢俄文/ CeO2催化剂

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摘要

Light-driven heterogeneous catalysis provides a promising way to accomplish chemical reactions by the use of light energy, which reduces the consumption of chemical energy sources. Here, we show that Ru/CeO2 catalysts exhibit high activity for the hydrogenation of CO2 to methane under illumination only, reaching high CO2 conversion (over 99.9%) and selectivity of methane (approximate to 100%) at low temperature. In sharp contrast, less CO2 is converted at the same temperature when a traditional heating model is used. As revealed by the results, the enhanced conversion rate under illumination should not only be attributed to the light-induced thermo-heating. Further investigations by in situ IR analysis and theoretical calculation provide comprehensive understanding of the reaction mechanism, and the important role of light is revealed. It is expected that the combination of catalysts and light may afford new perspectives for CO2 hydrogenation.
机译：Light-driven多相催化提供了有前途的方法来完成化学反应光能量的使用,减少了化学能源的消费。显示俄文/ CeO2催化剂具有活性高对二氧化碳加氢甲烷照明,达到高二氧化碳转换(超过99.9%)和甲烷的选择性低温(大约100%)。鲜明的对比,更少的二氧化碳以相同的转换传统的加热时温度模型使用。转化率下照明不应仅是由于光照thermo-heating。红外分析和理论计算全面理解的反应机制,光的重要作用透露。光催化剂和可能提供新的视角对二氧化碳加氢。

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