摘要
采用共沉淀法、浸渍法和沉积沉淀法制备了CeO2-Al2O3复合载体,比较了不同复合载体浸渍钴钼后的耐硫甲烷化催化性能,并优化了复合载体中CeO2的含量。结合N2物理吸附、XRD、H2-TPR等表征手段对复合载体及其负载的钴钼催化剂进行物相和结构分析发现,在Al2O3中添加CeO2可以明显提高合成气的耐硫甲烷化活性,其中,沉积沉淀法制备的25%CeO2-Al2O3复合载体负载钴钼后具有最佳催化活性。
Ceria-alumina composite supports were prepared by co-precipitation, impregnation and deposition- precipitation method, respectively. Co-Mo catalysts supported on the composite supports were evaluated for sulfur-resistant methanation and the appropriate content of CeO2 in the composite support was further studied. All the samples were characterized by nitrogen adsorption, X-ray diffraction （XRD） and hydrogen temperature- programmed reduction （ H2-TPR）. It was found that addition of CeO2 to Al2O3 significantly increased the activity of methanation and 25% CeO2-Al2O3 prepared by deposition-precipitation method had the best sulfur-resistant methanation activity.
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2012年第11期1390-1396,共7页
Journal of Fuel Chemistry and Technology
关键词
氧化铈
氧化铝
复合载体
钴钼催化剂
耐硫甲烷化
ceria
alumina
composite support
Co-Mo catalyst
sulfur-resistant methanation
