高校化学工程学报2011，Vol.25Issue(3)：437-441,5.
工业Ni-Mo/Al2O3催化剂上异戊二烯选择性加氢宏观动力学
Global Kinetics of Isoprene Selective Hydrogenation over the Commercial Ni-Mo/Al203 Catalyst
仝云娜 1张学军 2王欣 1张舜光 1段艳 1侯凯湖1
作者信息
- 1. 河北工业大学,化工学院,天津300130
- 2. 中国石油,石油化工研究院,北京100195
- 折叠
摘要
Abstract
Global kinetics of isoprene selective hydrogenation over the commercial Ni-Mo/AI2O3 catalyst was investigated by using an integral fixed bed reactor. The influences of reaction temperature, reaction pressure,hydrogen/oil volume ratio and liquid hourly space velocity on the selective hydrogenation reaction were studied by using the isoprene + n-octane solution as model feed and under following conditions: reaction temperature 70～120℃, reaction pressure 0.5～2.0 MPa, liquid hourly space velocity 2～36 h-1 and hydrogen/oil volume ratio 20～40. A power-law kinetic model was used to describe the global kinetics of the series reaction of isoprene selective hydrogenation. The results show that the reaction activation energy of isoprene hydrogenation to isopentene is 44.3 kJ.mol-1, and the reaction orders with respect to isoprene and hydrogen are 0.98 and 0.27,respectively; the reaction activation energy of isopentene hydrogenation to isopentane is 101.1 kJ.mol-1, the reaction orders with respect to isopentene and hydrogen are 1.57 and 1.09, respectively. The statistical test and the comparison of the isoprene conversion ratio and isopentene selectivity obtained by experiments to those obtained by the calculation results of the model indicate that the model used is reliable.关键词
二烯烃/宏观动力学/选择性加氢/活化能Key words
isoprene/ global kinetics/ selective hydrogenation/ activation energy分类
能源科技引用本文复制引用
仝云娜,张学军,王欣,张舜光,段艳,侯凯湖..工业Ni-Mo/Al2O3催化剂上异戊二烯选择性加氢宏观动力学[J].高校化学工程学报,2011,25(3):437-441,5.
