[1D09-17] CO2 recovery/conversion(2)

2:00 PM - 2:15 PM JST(5:00 AM - 5:15 AM UTC)Japanese

[1D12] CO₂ hydrogenation to Ethanol over alkali metal modified Rh–MoO_x catalysts

○Takuma Sato¹, Zenghao Wei¹, Takehiro Matsuyama¹, Hiroki Miura^1,2, Tetsuya Shishido^1,2 (1. Tokyo Metropolitan University, 2. Research Center for Hydrogen Energy-based Society)

Keywords:

CO2 hydrogenation,Ethanol,Alkali metal

Direct CO₂ hydrogenation to ethanol is a promising emerging technology for transforming CO₂ into valuable chemicals. However, it remains challenging due to low ethanol selectivity and catalytic stability. Recently, we demonstrated that the combination of Rh and MoO_x enables low temperature CO₂ hydrogenation to ethanol. This study further investigated the effect of modifying this catalyst with alkali metals. We propose that the Li and Na modifications moderately suppressed the excessive hydrogenation of the adsorbed CO₂ species. This facilitated the production of ethanol through a hetero-coupling reaction between the CH_x and CO species.