Propane Dehydrogenation over a Commercial Pt-Sn/Al2O3 Catalyst for Isobutane Dehydrogenation： Optimization of Reaction Conditions  

作　　者：Farnaz Tahriri Zangeneh, Saeed Sahebdelfar Mohsen Bahmani 

机构地区：[1]Catalyst Research Group, Petrochemical Research and Technology Company, National Petrochemical Company,14358-84711, Tehran, Iran

出　　处：《Chinese Journal of Chemical Engineering》2013年第7期730-735,共6页中国化学工程学报（英文版）

基　　金：Supported by the Petrochemical Research&Technology Co. of National Petrochemical Co.

摘　　要：The applicability of a commercial Pt-Sn/Al2O3 isobutane dehydrogenation catalyst in dehydrogenation of propane was studied. Catalyst performance tests were carded out in a fixed-bed quartz reactor under different operating conditions. Generally, as the factors improving propane conversion decrease the propylene selectivity, the optimal operating condition to maximize propylene yield is expected. The optimal condition was obtamed by the experimental design method. The investigated parameters were temperature, hydrogen/hydrocarbon （HE/HC） ratio and space velocity, being changed in three levels. Constrains such as the susceptibility of the catalyst components to sintering or phase transformation were also taken into account. Activity, selectivity and stability of the catalyst were considered as the measured response factors, while the space-time-yield （STY） was considered as the variable to be optimized due to its commercial interest. A STY of 16 mol.kg^-1.h^-1 was achieved under the optimal conditions of T= 620 ℃, H2/HC = 0.6 and, weight hourly space velocity （WHSV） = 2.2 h^-1. Single carbon-carbon bond rupture was found to be the main route for the formation of lower hydrocarbon byproducts.在丙烷的除氢作用的商业 Pt-Sn/Al2O3 isobutane 除氢作用催化剂的适用性被学习。催化剂表演测试在不同操作条件下面在一个改正床石英反应堆被执行。通常，作为因素改进丙烷变换减少丙烯选择，最大化丙烯产量的最佳的操作条件被期望。最佳的条件被试验性的设计方法获得。调查参数是温度，氢 / 烃(H2/HC ) 比率和空格速度，在三个层次被改变。抑制例如催化剂部件的危险性到 sintering 或阶段转变也被考虑。催化剂的活动，选择和稳定性被看作测量反应因素，当 space-time-yield (猪圈) 被看作由于它的商业利息要优化的变量时。16 摩尔杩牵獥愠摮琠'L 敬的一个猪圈？

关 键 词：Pt-Sn/Al2O3 catalyst DEHYDROGENATION PROPANE ISOBUTANE 

分 类 号：TQ241.11[化学工程—有机化工] TQ221.212