常压下CO₂还原的两种产物CH₄和CO被认为分别由甲烷化和逆水煤气RWGS反应得到。A. Aitbekova等人发现，将CeO₂负载的Ru NPs在210-230℃氧气中处理后便可以改变CO₂还原的选择性，使其由甲烷主产物变为CO主产物。原位X射线吸收实验发现，低温氧化处理过程中Ru由纳米颗粒变成了单位点分散的RuO_x/CeO₂.

Aisulu Aitbekova, Simon R. Bare*, and Matteo Cargnello*, et al. Low-Temperature Restructuring of CeO2-Supported Ru Nanoparticles Determines Selectivity in CO2 Catalytic Reduction

J. Am. Chem. Soc., DOI: 10.1021/jacs.8b07615

https://pubs.acs.org/doi/10.1021/jacs.8b07615