裂解汽油一段选择性加氢催化剂的加氢性能  

First-Stage Selective Hydrogenation Catalyst of Pyrolysis Gasoline

作　　者：杨天予[1,2] 张敬畅[1] 

机构地区：[1]北京化工大学现代催化研究所,北京100026 [2]中国石油化工股份有限公司北京燕山分公司研究院,北京102500

出　　处：《石油化工》2009年第6期613-617,共5页Petrochemical Technology

基　　金：中国石油化工股份有限公司北京燕山分公司研究院科研项目(KY2KRE0708)

摘　　要：采用X射线衍射、透射电子显微镜、扫描电子显微镜等手段对以α-Al2O3为载体、Pd为活性组分、加入金属M复配的Pd-M/α-Al2O3(简称RY-1)催化剂的结构和Pd的分散性进行了表征;并在裂解汽油一段选择性加氢反应中考察了RY-1催化剂的活性和稳定性。表征结果显示,RY-1催化剂表面的Pd颗粒排列有序,Pd的分散性好,金属M的加入使Pd-M-Al三者间形成较好的协同作用。实验结果表明,在RY-1催化剂催化裂解汽油一段选择性加氢反应中,在采用多种工业原料油、模拟工业反应条件下,加氢产品的双烯值(100g原料油)不大于2.5g,溴价(100g原料油)小于18g。与国内和进口参比催化剂相比,RY-1催化剂具有较高的活性、选择性和稳定性。A composite catalyst Pd-M/α-Al2O3 （RY-1） was prepared for first-stage selective hydrogenation of pyrolysis gasoline. A second metal M was added besides the active component Pd. The RY-1 catalyst was characterized by means of XRD, TEM and SEM. The activity of RY-1 catalyst was evaluated in an isothermal continuous flow reactor. The Pd on surface of RY-1 catalyst was found to be well dispersed and was arranged orderly. The addition of M metal enhanced the dispersion of Pd. The RY-1 catalyst showed synergistic effect of Pd-M-Al. The pyrolysis gasoline feedstocks, used in activity evaluation of the RY-1 catalyst, were collected from different relevant industrial origins and industrial reaction conditions were simulated. The diene value （per 100 g feedstock of hydrogenation products） was always less than 2.5 g , and bromine value （per 100 g feedstock of hydrogenation products） was less than 18 g. Compared with the reference catalysts, RY-1 catalyst was the best in catalytic activity, selectivity and stability.

关 键 词：裂解汽油 一段选择性加氢 钯催化剂 金属助剂 

分 类 号：TQ426.82[化学工程]