甲烷氧化偶联
甲烷
选择性
催化作用
化学
乙烯
氧化物
吸附
金属
组合化学
化学工程
光化学
无机化学
有机化学
工程类
作者
Kai Wu,Anna Zanina,Vita A. Kondratenko,Lin Xu,Jianshu Li,Juan Chen,Henrik Lund,Stephan Bartling,Yuming Li,Guiyuan Jiang,Evgenii V. Kondratenko
标识
DOI:10.1002/anie.202319192
摘要
Abstract Improving the selectivity in the oxidative coupling of methane to ethane/ethylene poses a significant challenge for commercialization. The required improvements are hampered by the uncertainties associated with the reaction mechanism due to its complexity. Herein, we report about 90 % selectivity to the target products at 11 % methane conversion over Gd 2 O 3 ‐based catalysts at 700 °C using N 2 O as the oxidant. Sophisticated kinetic studies have suggested the nature of adsorbed oxygen species and their binding strength as key parameters for undesired methane oxidation to carbon oxides. These descriptors can be controlled by a metal oxide promoter for Gd 2 O 3 .
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