石油学会 第63回年会（第69回研究発表会）
2021年5月24日〜5月25日
石油学会 第63回年会（第69回研究発表会）
2021年5月24日〜5月25日
[A04]New Synthesis of Diethyl Carbonate (DEC) from CO2 and alkoxysilanes using Zr catalysts
○Putro Wahyu1、Ikeda Akira1、Shigeyasu Shinji2、Hamura Satoshi2、Matsumoto Seiji 2、Choi Jun-Chul1、Fukaya Norihisa1(1. National Institute of Advanced Industrial Science and Technology (AIST)、2. Tosoh Corporation)
The new sustainable synthesis of DEC from CO2 and alkoxysilanes has been developed. Using Zr(OEt)4 catalyst, TON reached 43 for the synthesis of DEC from CO2 and tetraethyl orthosilicate (TEOS) with ~50% maximum yield of DEC. The 20-time-larger scale is comparable to that of the corresponding small one (~50%) suggesting the potential application of our synthetic approach in industry. The disiloxane byproduct can be reverted to TEOS using ethanol and molecular sieves (MS) as dehydrating agent. The evidence that the disiloxane byproduct is regenerable offers a new promising direction for the development of waste-free synthesis of DEC.