中国石油大学学报（自然科学版）2025，Vol.49Issue(2)：247-255,9.DOI:10.3969/j.issn.1673-5005.2025.02.025
γ-Al2O3负载Ni-Fe催化剂的制备及其催化NH3分解性能
Preparation on Ni-Fe catalyst supported by γ-Al2O3 and its catalytic performance in ammonia decomposition
摘要
Abstract
Ammonia is an important hydrogen carrier,and its decomposition can release stored hydrogen energy.In order to meet the current industrial demands for high hydrogen production rates and cost-effective catalysts in the ammonia decomposi-tion process,this study utilized Ni(NO3)2·6H2O,Fe(NO3)3·9H2O,and γ-Al2O3 as raw materials to prepare various nickel-based catalysts for ammonia decomposition via impregnation method.The study investigated the effect of directed cata-lytic decomposition of ammonia for hydrogen production under different conditions,and characterized the catalysts'structures using single-point BET,SEM,TEM,XRD,and H2-TPR techniques.The results show that the Ni-Fe/Al2O3 catalyst with the heating temperature of 500℃and the precursor solution concentration of 20%has the largest Ni dispersion and the high-est catalytic activity.When the flow rate of NH3+N2 mixer was controlled at 40+200 mL/min and the reaction temperature was 600℃,the ammonia conversion rate of the material was 91.3%.关键词
镍催化剂/制氢/载体/氨分解Key words
Ni catalyst/hydrogen production/carrier/ammonia decomposition分类
能源科技引用本文复制引用
韩昕璐,戚诗涛,林日亿,张立强,王新伟..γ-Al2O3负载Ni-Fe催化剂的制备及其催化NH3分解性能[J].中国石油大学学报（自然科学版）,2025,49(2):247-255,9.基金项目
国家自然科学基金项目(52206189) （52206189）
