[2F09-19] Hydrogen production/Energy carriers/CCU(2)

4:00 PM - 4:15 PM JST(7:00 AM - 7:15 AM UTC)Japanese

[2F19] Direct synthesis of dimethyl ether and hydrocarbons from carbon dioxide

○Kaoru TAKEISHI¹, Ryo OKAZAKI¹ (1. Shizuoka University, Graduate School of Integrated Science and Technology)

Keywords:

carbon dioxide (CO2),hydrogen (H2),dimethyl ether (DME)

Cu-based alumina catalysts prepared by the sol-gel method (alkoxide method) can directly synthesize DME with high activity and selectivity in CO hydrogenation. Similarly, DME is produced with high activity in CO₂ hydrogenation. However, a large amount of CO is also formed simultaneously. Therefore, by creating two layers of Cu-based alumina catalysts in the same reaction tube, the selectivity of direct DME synthesis from CO₂ can be increased. If the lower layer of the catalyst layer is composed of zeolite, Co-based catalysts, and so on, direct hydrocarbon synthesis from CO₂ becomes possible.