山东科学2025，Vol.38Issue(3)：90-98,9.DOI:10.3976/j.issn.1002-4026.2025041
Ru/Ce-Al催化剂的合成及其氨分解制氢性能与燃料电池应用评估
Synthesis of Ru/Ce-Al catalyst and evaluation of its ammonia-decomposition-induced hydrogen production performance and fuel cell application
摘要
Abstract
To meet the rapid response requirements of distributed energy supply systems for dynamic hydrogen production rates,a Ru/Ce-Al catalyst was prepared using a precipitation-hydrothermal method.This method addresses the challenge of maintaining dynamic stability in ammonia-decomposition-induced hydrogen production units under variable load conditions.Characterization techniques,such as XRD,NH3-TPD,and H2-TPR,were used to reveal the systematic regulation mechanism by which Al3+doping in CeO2 and the Ce/Al stoichiometric ratio influence the evolution of oxygen vacancies in the support;in addition,their ammonia-decomposition-induced hydrogen production performance were investigated.The results show that Al3+doping induces the formation of a Ce-Al-O solid solution,which optimizes the distribution of oxygen vacancies on the support surface through strong metal-support interactions(SMSIs),thereby enhancing the dispersion of active metal Ru.At a space velocity of 15 000 h-1 and reaction temperature of 525℃,the Ru/3Ce-Al catalyst achieved an ammonia-conversion efficiency of 93%.Its balanced performance over a wide temperature range(500℃-550℃)effectively excessive minimized reaction rates at high temperatures that could lead to catalyst sintering.After 100 h of operation,the catalyst maintained an ammonia-conversion efficiency of 91.8%.An ammonia-hydrogen fuel-cell-based energy supply system,constructed using this catalyst,exhibited power,voltage,and current fluctuations of only 2.3%,1.1%,and 0.6%,respectively,under a 2 kW load.Furthermore,in step-load tests(0.22 kW→0.45 kW→0.22 kW),the system demonstrated rapid power and current responses with pressure fluctuations below 5‰.This result verified its dynamic response capability and operational stability in complex environments.关键词
催化剂/氨分解/燃料电池/分布式供能/动态响应Key words
catalyst/ammonia decomposition/fuel cell/distributed energy supply/dynamic response分类
化学化工引用本文复制引用
王建梅,司洪宇,KOSCHANY Arthur Ernest,王军成,厉运周,许爱华..Ru/Ce-Al催化剂的合成及其氨分解制氢性能与燃料电池应用评估[J].山东科学,2025,38(3):90-98,9.基金项目
山东省重点研发计划项目(2023ZLYS01) （2023ZLYS01）
国家重点研发计划(2022YFC3104200) （2022YFC3104200）
齐鲁工业大学(山东省科学院)科教产融合试点工程重大创新专项项目(2023HYZX01) （山东省科学院）
