正己烷热裂解链式反应机理和选择性分析  

CHAIN REACTION MECHANISM AND SELECTIVITIES OF n-HEXANE PYROLYSIS

作　　者：赵迎宪[1] 危凤[1] 虞影[1] 陈明杰[1] 

机构地区：[1]浙江大学宁波理工学院,浙江宁波315100

出　　处：《石油学报（石油加工）》2010年第3期407-413,共7页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金项目(20673009);宁波市自然科学基金项目(2006A610065)资助

摘　　要：采用柱塞流连续流动管式反应器,考察了正己烷在923K下的热裂解反应。结果表明,主要产物包括C1～C4烷烃、C2～C5烯烃、异己烷、焦炭和H2。根据产物种类和选择性分布,建立了正己烷热裂解的自由基链式反应机理模型,并对所含各基元反应的选择性进行了定量分析。Pyrolysis of n-hexane was conducted in a plug-flow tube reactor at 923 K.The analytic results showed that the primary products consisted of C1-C4 paraffins,C2-C5 olefins,isohexanes,coke and H2.Based on the distribution of product types and selectivities,a chain mechanism of free radical reactions was established,and a quantitative analysis on the selectivities of various elementary reactions was carried out.

关 键 词：正己烷 热裂解 自由基 链式反应机理 选择性 

分 类 号：TQ031[化学工程]