Ternary NiMo-Bi liquid alloy catalyst for efficient hydrogen production from methane pyrolysis

作者：Luning Chen, Zhigang Song, Shuchen Zhang, Chung‐Kai Chang, Yu‐Chun Chuang, Xinxing Peng, Chaochao Dun, Jeffrey J. Urban, Jinghua Guo, Jeng‐Lung Chen, David Prendergast, Miquel Salmerón, Gábor A. Somorjai, Ji Su · 发表于：Science · 年份：2023 · DOI：10.1126/science.adh8872 · 被引用次数：185 · 研究领域：Electrocatalysts for Energy Conversion、Catalysts for Methane Reforming、Catalytic Processes in Materials Science

Methane pyrolysis (MP) is a potential technology for CO 2 -free hydrogen production that generates only solid carbon by-products. However, developing a highly efficient catalyst for stable methane pyrolysis at a moderate temperature has been challenging. We present a new and highly efficient catalyst created by modifying a Ni-Bi liquid alloy with the addition of Mo to produce a ternary NiMo-Bi liquid alloy catalyst (LAC). This catalyst exhibited a considerably low activation energy of 81.2 kilojoules per mole, which enabled MP at temperatures between 450 and 800 Celsius and a hydrogen generation efficiency of 4.05 ml per gram of nickel per minute. At 800 Celsius, the catalyst exhibited 100% H 2 selectivity and 120 hours of stability.