催化作用
甲烷
热解
合金
氢
三元运算
制氢
材料科学
化学工程
三元合金
化学
冶金
有机化学
计算机科学
工程类
程序设计语言
作者
Luning Chen,Zhigang Song,Shuchen Zhang,Chung-Kai Chang,Y.C. Chuang,Xiaoyuan Peng,Chaochao Dun,Jeffrey J. Urban,Jinghua Guo,Jeng-Lung Chen,David Prendergast,Miquel Salmerón,Gábor A. Somorjai,Junfeng Su
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2023-08-25
卷期号:381 (6660): 857-861
被引量:19
标识
DOI:10.1126/science.adh8872
摘要
Methane pyrolysis (MP) is a potential technology for CO2-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% H2 selectivity and 120 hours of stability.
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