Pd/Al_2O_3催化剂用于连续重整汽油全馏分加氢的失活分析  

Deactivation of Pd/Al_2O_3 catalyst for selective hydrogenation of full-range reformate gasoline

作　　者：南军[1] 柴永明[1] 李彦鹏[1] 王继锋[2] 刘晨光[1] 

机构地区：[1]中国石油大学(华东)重质油国家重点实验室CNPC催化重点实验室,山东东营257062 [2]中国石化抚顺石油化工研究院,辽宁抚顺113001

出　　处：《工业催化》2007年第1期8-13,共6页Industrial Catalysis

基　　金：国家重点基础研究发展计划(973计划)(2004CB217807)

摘　　要：研究了负载在氧化铝载体上的贵金属Pd基催化剂在重整生成油选择性加氢脱烯烃反应中的性能。结果表明,在连续重整生成油全馏分的选择性加氢实验中,采用现有工业常用的工艺条件,单使用Pd作活性组分的Pd/A l2O3催化剂不能满足产品质量要求。探讨了切割馏分油加氢反应中催化剂失活原因,并对失活前后的催化剂采用XRD、SEM和FTIR等手段进行分析表征。结果表明,造成催化剂失活原因是催化剂表面油品中重组分等热敏类物质强吸附或聚合作用的结果。改进后的双金属Pd基催化剂UDO-01可用于重整生成油全馏分的选择性加氢脱烯烃反应,加氢后产品的溴价小于200 mg-Br.(100 g-油)-1,芳烃损失小于0.5%,且表现出好的稳定性。Hydrogenation of reformate The results showed that for selective h gasoline over Pd-based catalysts supported on alumina was studied. ydrogenation of full-range continuous reformate gasoline, Pd/Al2O3 catalyst could not meet the requirement of existing commercial plant on product quality. The causes behind deactivation of the catalyst during hydrogenation reaction of different reformate cut were investigated . The catalysts prior to and after deactivation were characterized by XRD, SEM and FHR. The causes behind deactivation of Pd/Al2O3 catalyst were the adsorption and polymerization of heavy components in oil on surface of the catalysts. A modified bimetallic palladium-based catalyst was used for hydrogenationof full-range reformate to lower olefin content, with bromine value of the product lower than 200 mg-Br·（100 g-oil）^-1 and loss of aromatics less than 0.5% （mass fraction）. The bimetallic palladium-based catalyst exhibited excellent stability.

关 键 词：重整生成油 选择性加氢 PD催化剂 失活 

分 类 号：TE624.42[石油与天然气工程—油气加工工程]