[1E01-03] International sess. 1

[1E02] CO₂-to-Methanol Hydrogenation Catalyst by Focusing on Coordination Structure of Cu species

○Shohei Tada¹, Fumito Otsuka², Ryuji Kikuch² (1. Ibaraki University, 2. The University of Tokyo)

We studied the Cu nanoparticle formation by a simple deposition-reduction technique using Cu-doped MgAl₂O₄ (Mg_1-xCu_xAl₂O₄). Mg_1-xCu_xAl₂O₄ possessed the following three types of Cu²⁺ species: short O-Cu octahedral coordination [CuO₆]_s, elongated O-Cu octahedral coordination [CuO₆]_el, and tetrahedral coordination [CuO₄]_t. By H₂-reduction of Mg_1-xCu_xAl₂O₄ containing mainly [CuO₆]_s, highly-dispersed Cu nanoparticles (< 2 nm) was selectively deposited on the MgAl₂O₄-based support, resulting in the relatively good catalytic performance on CO₂-to-methanol hydrogenation.