A04-A06

11:00 AM - 11:30 AM JST(2:00 AM - 2:30 AM UTC)Japanese

[A06] Oxidative coupling of methane under high-pressure conditions using a Na₂WO₄ catalyst

○Keiju Wachi^1,3, Tomohiro Yabe¹, Ryo Nakano², Makoto Yamashita^2,3, Kazuya Yamaguchi¹ (1. The University of Tokyo, 2. Nagoya University, 3. Institute of Science Tokyo)

Keywords:

methane,oxidative coupling,high pressure

The direct conversion of methane, the main component of natural gas, into value-added chemicals is attracting attention as an innovative alternative to conventional syngas-based processes. In this study, we found that ethane and ethylene are efficiently formed under high-pressure conditions using Na₂WO₄/SiO₂ as both an initiator and a catalyst for methane oxidation. Comparative studies using various catalysts and reaction conditions revealed that the reaction proceeds cooperatively both in the gas-phase and on the catalyst surface, and that the exothermic reaction on the surface plays a crucial role in enhancing the selectivity toward ethane and ethylene.