聚四氟乙烯修饰的MCM-49分子筛上的正十二烷催化裂解反应  

Reaction of catalysis cracking of n-dodecane over MCM-49 molecular sieves modified with teflon

作　　者：刘庆波[1] 杨向光[2] 

机构地区：[1]南京林业大学,江苏南京210037 [2]中国科学院长春应用化学研究所,吉林长春130022

出　　处：《工业催化》2011年第9期25-29,共5页Industrial Catalysis

基　　金：南京林业大学高学历人才基金项目(B2010-18)

摘　　要：制备MCM-49分子筛负载不同量的聚四氟乙烯催化剂,运用XRD、NH_3-TPD和DSA等方法对催化剂表面性能进行表征,并将催化剂应用于正十二烷的催化裂解反应。结果表明,负载聚四氟乙烯后,McM-49分子筛催化剂表面疏油性得到明显改善,催化剂适当的表面疏油性对于抑制裂解过程中的小分子聚合、阻止积炭的产生和延长催化剂寿命有益。MCM-49 molecular sieves modified with different loadings of teflon （MCM-49-Teflon） were prepared by impregnation method and characterized by means of XRD, NH3-TPD and drop shape analyzer （DSA） measurements. The surface lipophobic properties of MCM-49-Teflon catalysts were obviously improved by means of the addition of teflon. The catalysts were used in catalytic cracking of n-dodecane. The results showed that surface appropriate lipophobic properties of the catalysts were effective for preventing polymerization of small molecules ,decreasing the formation of coke and lengthening the lifetime of the catalyst.

关 键 词：催化剂工程 MCM-49分子筛 聚四氟乙烯 十二烷裂解 固体酸 

分 类 号：TQ426.95[化学工程] TE624.9[石油与天然气工程—油气加工工程]