文献类型：期刊文献

中文题名：二氯乙烷氧氯化再生丙烷脱氢Pt-Sn/Al_(2)O_(3)催化剂的性能研究

英文题名：Performance of Pt-Sn/Al_(2)O_(3)catalyst for propane dehydrogenation regenerated by oxychlorination of dichloroethane

作者：杨环[1];戴云生[2];刘俊熙[1];孟才业[1];冯玉博[1];颜新平[1];隋志军[1]

机构：[1]华东理工大学化学工程联合国家重点实验室,上海200237;[2]贵研工业催化剂(云南)有限公司,云南玉溪651100

年份：2021

卷号：46

期号：2

起止页码：39

中文期刊名：天然气化工—C1化学与化工

外文期刊名：Natural Gas Chemical Industry

收录：CSTPCD;;北大核心:【北大核心2020】；

基金：上海市自然科学基金项目(20ZR1415800)。

语种：中文

中文关键词：丙烷脱氢;二氯乙烷;Pt-Sn/Al_(2)O_(3)催化剂;再生

外文关键词：propane dehydrogenation;dichloroethane;Pt-Sn/Al_(2)O_(3)catalyst;regeneration

摘要：氧氯化再生是Pt基催化剂烧结失活后的一种重要再生手段。以丙烷脱氢Pt-Sn/Al_(2)O_(3)催化剂为对象,研究了二氯乙烷(EDC)作氯分散剂时Pt基催化剂的再生工艺,重点考察了再生温度、氯浓度对再生效果的影响。采用BET、CO-Chem、ICP、HADDF-STEM和XPS等方法对再生前后的催化剂进行了表征。结果表明,在一定浓度范围内,以EDC做氯分散剂可以实现Pt-Sn/Al_(2)O_(3)催化剂的再生,氯浓度和温度对再生后催化剂性能有较大影响。当再生温度为500℃、EDC进料速率为0.05 mL/min时再生催化剂的性能最佳。再生处理不会破坏催化剂的织构性质,且能明显提高Pt的分散度、恢复催化活性。
Oxychlorination is an important regeneration method of Pt based catalyst after sintering deactivation.Taking Pt-Sn/Al_(2)O_(3)catalyst for propane dehydrogenation as the object,the regeneration process of Pt based catalyst with dichloroethane(EDC)as chlorine dispersant was studied.The effects of regeneration temperature and chlorine concentration on the regeneration effect were investigated.The catalysts were characterized by BET,CO-Chem,ICP,HAADF-STEM and XPS.The results show that within a certain concentration range,the regeneration of Pt-Sn/Al_(2)O_(3)catalyst can be realized by using EDC as chlorine dispersant,and the chlorine concentration and temperature have great impact on the performance of the regenerated catalyst.When the regeneration temperature is 500℃and the feed rate of EDC is 0.05 mL/min,the regenerated catalyst shows the best performance.The regeneration treatment can not destroy the texture properties of the catalyst,and can significantly improve the dispersion of Pt and restore the catalytic activity.