碳源对Mo_2C/SAPO-11催化剂制备及正庚烷异构化的影响  

Effect of carbon sources on preparation of Mo_2C/SAPO-11 catalyst and its behaviors for isomerization of n-heptane

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

机构地区：[1]中国石油大学(华东)化学化工学院,山东东营257061 [2]辽宁石油化工大学石油化工学院,辽宁抚顺113001 [3]沈阳工业大学石油化工学院,辽宁辽阳111003

出　　处：《工业催化》2008年第10期55-58,共4页Industrial Catalysis

基　　金：辽宁省教育厅科技项目(05L221)

摘　　要：采用程序升温法制备了Mo2C/SAPO-11催化剂,以正庚烷为模型分子,在固定床连续流微反装置上考察了分别采用正戊烷和正庚烷做碳源,对催化剂制备和异构化的影响。在400℃,氢压1.5 MPa,氢烃体积比为200∶1,空速1 h-1条件下,正庚烷转化率达到81.39%,选择性68.67%,异构产物收率55.89%,连续反应120 h,异构化活性未见明显降低。SAPO-11 supported molybdenum carbide catalyst was prepared by TPR using different carbon sources. The influence of carbon： sources on preparation of Mo2C/SAPO-11 catalyst and its catalytic behaviors for hydroisomerization of n-heptane were investigated in a fixed-bed down-flow reactor. The results showed that selectivity to isomers of 68.67%, isomers yield of 55.89% and n-heptane conversion of 81.39% were obtained under following condition： 400 ℃, 1.5 MPa, LHSV 1.0 h^-1, hydrogen/hydrocarbons volumetric ratio 200： 1. No considerable decline of the catalytic activity was observed after continuous reaction for 120 h.

关 键 词：催化剂工程 碳源 碳化钼 SAPO—11分子筛催化剂 正庚烷异构化 

分 类 号：TQ426.6[化学工程] O643.36[理学—物理化学]