摘要
采用等体积浸渍法制备了Ni/BaTiO3、Co/BaTiO3和Ni-Co/BaTiO3催化剂,并在固定床反应装置上考察了在973～1073 K这些催化剂对CO2重整CH4反应的催化活性,且采用程序升温还原技术对催化剂进行表征,发现与单金属催化剂相比,Ni-Co/BaTiO3双金属催化剂有更为优越的催化活性.结果表明在Ni-Co/BaTiO3催化剂中Ni和Co之间产生了一定的协同作用.同时研究了不同的制备方法对Ni-Co双金属催化剂催化活性的影响,用溶胶-凝胶法制备的催化剂具有更高的催化活性.
Three catalysts, Ni/BaTiO3, Co/BaTiO3 and Ni-Co/BaTiO3, were prepared by incipient impregnation and evaluated by TPR. Catalytic activities for CH4/CO2 reforming to syngas were studied in a micro-reaction in the temperature range of 973 - 1 073 K. It was found that Ni-Co/BaTiO3 catalyst showed higher catalytic activity than Ni/BaTiO3 and Co/BaTiO3. This may be ascribed to the interaction between Ni and Co in bimetallic catalyst. The effect of preparation methods on catalytic activity of Ni-Co bimetallic catalyst was also studied, and the results showed that the catalytic activity of catalyst prepared by solgel was much higher than that by the impregnation.
出处
《现代化工》
EI
CAS
CSCD
北大核心
2005年第10期37-39,共3页
Modern Chemical Industry
