排序方式: 共有5条查询结果,搜索用时 0 毫秒
1
1.
Ni-Co双金属催化剂在二氧化碳重整甲烷反应中的催化活性研究 总被引:1,自引:0,他引:1
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973~1 073 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。 相似文献
2.
3.
The nickel-based catalysts were prepared by the sol-gel method and used for the CH4 reforming with CO2. The effects of the sol-gel method on the specific surface area, catalytic activity, desorption, and reduction performances of catalysts were investigated with BET, TPR, and TPD. Compared with the catalyst prepared by the impregnation method, the results indicated that the catalysts prepared by the sol-gel method had larger specific surface area, showing higher catalytic activities and exhibiting perfect desorption and reduction performances. In addition, the modification effects of adding La were studied, and it was found that the 0.75NLBT catalyst constituted of 5wt.%Ni-0.75wt.%La was optimal. 相似文献
4.
5.
BaTiO_3负载Ni-Co双金属催化剂催化CH_4/CO_2重整反应 总被引:2,自引:1,他引:2
采用等体积浸渍法制备了一系列不同Co添加量的Ni-Co/BaTiO3双金属催化剂,并在固定床反应装置上考察了在973~1073K温度范围内这些催化剂对CO2重整CH4反应的催化活性。实验结果表明,Ni、Co质量负载均为5.0%的Ni-Co/BaTiO3催化剂活性最好。TPR、TPD和XPS表征发现,与单金属催化剂Ni/BaTiO3相比,Ni-Co/BaTiO3双金属催化剂具有更高的催化活性,更好的脱附和抗积炭性能,而且更容易还原。 相似文献
1