【作者】 张一卫； 周钰明； 叶志良； 许艺； 吴沛成；

【Author】 Zhang Yiwei Zhou Yuming Ye Zhiliang Xu Yi2 "Wu Peicheng(Department of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096; Research Institute of JLPEC. CO. Nanjing 210046)

【机构】 东南大学化学化工系； 金陵石化公司南京烷基苯研究所；

【摘要】 对PtSnNa/Al2O3丙烷脱氢催化剂进行了稀土改性,并考察了稀土元素对丙烷脱氢催化性能的影响。结果表明:添加稀土元素镧后不仅可以抑制反应产物在催化剂表面的深度结焦,而且还提高了催化剂的使用稳定性,显示出稀土La3+离子和Na+之间存在明显的协同催化作用,PtSnNaLa/Al2O3催化剂的活性最好的La/Pt比为3。更多还原

【Abstract】 The propane dehydrogenation catalyst PtSnNa/Al2O3 was modified with rare earths and we investigated their influences on the reaction properties of the catalysts. The results indicated that the introduced La could not only prevent the reaction outcomes in the superficial catalyst from coking, but also increase the stability of the catalysts, which showed the catalytic interaction between La3+ and Na+ . The activity of the catalyst was the best when La/Pt = 3.更多还原