[3Ca01-12] SS2

[3Ca09] Unstable intermediate of methanol synthesis by CO₂ hydrogenation on Cu(111) surface

*Ryusei Kojima¹, Yasutaka Sawaki¹, Kotaro Takeyasu¹, Takahiro Kondo¹, Tadahiro Fujitani², Junji Nakamura¹ (1. University of Tsukuba, 2. National Institute of Advanced Industrial Science and Technology)

In the methanol synthesis by CO₂ hydrogenation on the Cu catalyst, in order to observe the hydrogenation process after formate(HCOO) and unstable intermediates, formate is adsorbed on the Cu(111) model surface and is hydrogenated by the atomic hydrogen at low temperature. Formate reversibly adopted bidentate and monodentate structures, and a chemical species considered to be dioxymethylene and formaldehyde were observed.