铈铝复合载体对钼基催化剂耐硫甲烷化催化性能的研究  

Ceria-alumina composite support on the sulfur-resistant methanation activity of Mo-based catalyst

作　　者：王保伟[1] 尚玉光[1] 丁国忠[1] 王海洋[1] 王二东[1] 李振花[1] 马新宾[1] 秦绍东 孙琦 

机构地区：[1]天津大学化工学院绿色合成与转化教育部重点实验室,天津300072 [2]北京低碳清洁能源研究所,北京102209

出　　处：《燃料化学学报》2012年第11期1390-1396,共7页Journal of Fuel Chemistry and Technology

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.

关 键 词：氧化铈 氧化铝 复合载体 钴钼催化剂 耐硫甲烷化 

分 类 号：O643.3[理学—物理化学]