摘要
采用常温溶剂热法合成沸石型咪唑盐骨架材料ZIF-67和ZIF-8,并控制钴锌摩尔比合成ZIF-67@ZIF-8,得到以高石墨化碳为核,氮掺杂碳为壳的纳米多孔杂化碳材料。以氨分解制氢为反应模型,通过XRD与TEM对结构进行表征。研究表明,由于ZIF材料的核壳特性,Ru-CS-Co/CN(1)在性能测试中测得活化能(Ea)为45.91 kJ/mol,分解率为92.61%。相比于单金属钌催化剂,多孔碳负载Ru-Co双金属催化剂在较低温度区(425~500℃)的氨分解性能提高,能大幅降低活化能与反应温度。
The zeolite-type imidazole salt framework materials ZIF-67 and ZIF-8 were synthesized by the normal temperature solvothermal method,and synthesized by controlling the ratio of cobalt to zinc to obtained the high graphitized carbon as the core and nitrogen-doped carbon as the shell nanoporous hybrid carbon materials.Taking ammonia decomposition to produce hydrogen as the reaction model,the structure was characterized by XRD and TEM.Studies showed that due to the core-shell characteristics of the ZIF material,the activation energy(Ea)of Ru-CS-Co/CN(1)measured in the performance test was 45.91 kJ/mol,and the decomposition rate was 92.61%.Comparing with the single metal ruthenium,the porous carbon-supported Ru-Co bimetallic catalyst improved ammonia decomposition performance in the lower temperature range(425~500℃),greatly reducing the activation energy and reaction temperature.
作者
陈依文
陈材
魏鼎穹
文婕
CHEN Yi-wen;CHEN Cai;WEI Ding-qiong;WEN Jie(College of Chemistry and Chemical Engineering,Southwest Petroleum University,Sichuan Chengdu 610500,China)
出处
《广州化工》
CAS
2021年第2期38-42,129,共6页
GuangZhou Chemical Industry
基金
国家自然科学基金项目(21406184)。
