[2D01-09] Hydrogen production, Energy carriers, CCU(2)

9:30 AM - 9:45 AM JST(12:30 AM - 12:45 AM UTC)Japanese

[2D02] CO₂ hydrogenation to methanol by supported Au catalysts: Relationship between hydrogen activation and methanol production rate

○YUICHIRO OKUZUMI¹, TAKUMI NAKAGAWA¹, HIROKI MIURA^1,2, TETSUYA SHISHIDO^1,2 (1. Tokyo Metropolitan university, 2. Research Center of Hydrogen Energy-based Society)

Keywords:

Gold catalyst,CO2 hydrogenation to methanol,Hydrogen activation

Supported Au catalysts exhibit high activity and selectivity for CO2 hydrogenation to methanol (CH3OH) at lower temperatures (< 473 K). We reported that both the CH3OH formation rates in CO2 hydrogenation and hydrogen dissociation rate in the H2-D2 exchange reaction depend on the particle size and electronic state of Au nanoparticles (NPs). Moreover, for CO2 hydrogenation to methanol, the hydrogenation of the formate intermediate has been proposed to be the rate-determining step. In this study, to get insight into hydrogen activation on supported Au catalysts, the activity for OH-D2 exchange and the formation rate of OD species were investigated.