催化作用
氢
氨
电场
制氢
分解
氨生产
燃烧
兴奋剂
无机化学
化学
材料科学
解吸
物理化学
有机化学
光电子学
吸附
量子力学
物理
作者
X. Wang,Zijian Zhang,Guangzhao Zhou,Yiran Zhang,Xuteng Zhao,Dong Han,Ting Chen,Zhen Huang,He Lin
出处
期刊:Fuel
[Elsevier]
日期:2023-06-09
卷期号:351: 128796-128796
被引量:10
标识
DOI:10.1016/j.fuel.2023.128796
摘要
It is a good strategy to improve the combustion performance of ammonia in engines by onboard hydrogen mixing through ammonia decomposition. To utilize the exhaust heat from engines, a novel technology to decompose ammonia at low temperature (<350 °C) was studied, which is based on the synergistic effect between electric field and Ce-doped catalysts. A series of non-noble metals (Fe/Co/Ni) supported on Ce-doped ZrO2 semiconductor (CexZr1-xO2) were synthesized by solution combustion method to investigate the electric field-assisted catalytic activity. We achieved an ammonia conversion of 60% at 300 °C for Ni/Ce0.25Zr0.75O2 catalyst and the maximum energy efficiency is close to 20% for Fe/Ce0.25Zr0.75O2 catalyst with electric field. The synergistic effects of basicity enhancement and proton hopping between the electric field and Ce-doped catalysts were found by a series of characterizations. Electric field facilitated the generation of strong basic sites, which was beneficial to the recombinative desorption of nitrogen. And the proton hopping helped to reduce hydrogen poisoning.
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