[P01-42] poster sess.

Japanese

[P24] Synthesis of Diethyl Carbonate from Carbon Dioxide Mediated by Zirconium-Grafted Heterogeneous Catalysts

○Haruki Nagae¹, Hiroki Koizumi¹, Katsuhiko Takeuchi¹, Satoshi Hamura², Toshihide Yamamoto², Kazuhiro Matsumoto¹, Yoshihiro Kamimura¹, Sho Kataoka¹, Norihisa Fukaya¹, Jun-Chul Choi¹ (1. The National Institute of Advanced Industrial Science and Technology (AIST), 2. Tosoh Corporation)

Keywords:

CO2,Diethyl Carbonate,Zirconium Grafted Catalyst

The increase in CO₂ levels has been identified as a significant contributor to climate change, particularly global warming. Therefore, considerable efforts have been devoted by scientists to develop CO₂ converting method into useful chemicals. We recently reported an efficient synthesis method of dialkyl carbonates (DRC) from CO₂ and tetraalkyl orthosilicate in the presence of tetraalkoxy zirconium (Zr(OR)₄) as the catalyst. Herein, we report our new zirconium-grafted heterogeneous catalysts for DRC synthesis, in which ceria-coated silica (CeO₂/SiO₂) support played an important role not only in enhancing the catalytic activity of Zr(OEt)₄ but also in preventing catalyst deactivation.