文献类型：期刊文献

中文题名：裂解汽油中混合烯烃选择性加氢反应动力学

英文题名：Kinetics of Selective Hydrogenation of Olefins in Pyrolysis Gasoline

作者：曹益宁[1];周志明[1];张津驰[1];杨栋[2];程振民[1]

机构：[1]华东理工大学联合化学反应工程研究所化学工程联合国家重点实验室,上海200237;[2]中国石化股份有限公司广州分公司,广东广州510726

年份：2006

卷号：22

期号：5

起止页码：385

中文期刊名：化学反应工程与工艺

外文期刊名：Chemical Reaction Engineering and Technology

收录：CSTPCD;;EI(收录号：20070310373216);Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：裂解汽油;选择性加氢;反应动力学;竞争吸附

外文关键词：pyrolysis gasoline; selective hydrogenation; reaction kinetics; competitive adsorption

摘要：采用高压搅拌釜式反应器,在消除催化剂外扩散影响的基础上,对裂解汽油选择性加氢反应动力学进行了研究。以反应组分环戊二烯、苯乙烯、1-己烯与溶剂正庚烷的混合物为模型化合物,考察了反应温度和压力的影响。结果表明,环戊二烯、苯乙烯、1-己烯和环戊烯在催化剂表面为竞争加氢,双烯的反应速率远大于单烯。采用Langmuir-Hinshelwood反应机理,导出了反应动力学模型,并采用非线性最小二乘法对动力学模型参数进行估值。实验结果验证了动力学模型的合理性。
A kinetics of pyrolysis gasoline hydrogenation over Pd/Al2O3 catalyst was mvestigateo using a stirred semibatch reactor in a regime free of external diffusion limitations. The mixture composed of cyclopentadiene, styrene, 1-hexene and n-heptane was used as the model pyrolysis gas. Effects of reaction temperature and pressure on the reaction rate were obtained. The results showed that competitive hydrogenation among cyclopentadiene, styrene, 1-hexene and cyclopentene was remarkable, and the reaction rates of diolefins were much faster than those of monoolefins. A Langmuir-Hinshelwood type model was proposed, and the kinetic parameters were estimated by nonlinear regression of the experimental data. The predicted concentration curves were in good agreement with the experimental results.