Mo2C／SAPO-11催化剂上正己烷的异构化  

N-hexane Isomerization over Mo_2C/SAPO-11 Catalyst

作　　者：孟禹[1] 谷峰[1] 王海彦[1] 魏民[1] 马骏[1] 施岩[1] 常勇[1,2,3] 

机构地区：[1]辽宁石油化工大学 [2]中国石油大学(华东)化学化工学院 [3]沈阳工业大学石油化工学院

出　　处：《石油与天然气化工》2009年第1期1-3,10,共4页Chemical engineering of oil & gas

摘　　要：本实验利用程序升温还原法制备了SAPO-11负载碳化钼催化剂。XRD分析表明,利用正己烷作为碳源得到了对异构化具有活性的β-Mo2C。通过连续流动固定反应装置,以正己烷为模型反应物,考察了反应温度、压力、空速和氢烃比对β-Mo2C/SAPO-11催化剂临氢异构化反应性能的影响。结果显示,SAPO-11负载碳化钼催化剂上的正己烷异构化的最适宜反应条件为温度380℃,压力1.5MPa,体积空速1.0h-1,氢烃体积比200:1。最适宜条件下反应物转化率为82.19%时,选择性和异构物收率分别达到73.57%和60.47%。SAPO-11 supported molybdenum carbide catalyst has been prepared through temperature programming reduction technique.The XRD results showed that β-Mo2C was the active component for n-hexane isomerization,which can be obtained by using n-hexane as the source of carburization.The influences of reaction temperature,pressure,space velocity and hydrogen to hydrocarbon ratio on the catalytic performance for hydroisomerization over β-Mo2C/SAPO-11 have been investigated in a fixed-bed down-flow reactor,and using n-hexane as the module reactant.The optimum conditions for n-hexane isomerization were reaction temperature 380℃,pressure 1.0MPa,LHSV 1.0 h-1 and hydrogen to hydrocarbon ratio(v/v) 200:1.Under the optimized conditions,the conversion of n-hexane reached 82.19%;the selectivity to isomers and the isomers yield were 73.57% and 60.47%,respectively.

关 键 词：异构化 碳化钼 正己烷 SAPO-11 

分 类 号：TE624.47[石油与天然气工程—油气加工工程]