Support-Mediated Alkane Activation over Pt–SO4/Al2O3 Catalysts
Support-Mediated Alkane Activation over Pt–SO4/Al2O3 Catalysts
复制标题
Pt–SO4/Al2O3 催化剂上载体介导的烷烃活化
DOI：
10.1023/b:catl.0000019326.71015.9c
复制
发表时间：
2004
影响因子：
2.8
通讯作者：
K. Wilson
中科院分区：
文献类型：
--
作者：
David E. Gawthrope;A. Lee;K. Wilson
以预硫酸化的氧化铝为载体，制备了一系列Pt/Al_2O_3催化剂，考察了硫酸盐促进的烷烃燃烧反应。催化剂硫酸化大大提高了Pt/Al 2 O3上的乙烷燃烧，也改善了甲烷和丙烷的起燃性能。催化剂活性增加与Pt负载量，但硫酸促进的幅度是独立的Pt负载量在氧化条件下，但缩放烷烃链长。丙烷燃烧活性与硫酸铝位点的表面覆盖率成正比;支持介导的烷烃活化是硫酸盐促进的主要过程。
Sulphate-promoted alkane combustion has been investigated over a series of Pt/Al2O3 catalysts using pre-sulphated alumina supports. Catalyst sulphation greatly enhanced ethane combustion over Pt/Al2O3, and also improved methane and propane light-off performance. Catalyst activity increased with Pt loading, however the magnitude of sulphate promotion was independent of Pt loading under oxidising conditions, but scaled with alkane chain length. Propane combustion activity was directly proportional to the surface coverage of aluminium sulphate sites; support-mediated alkane activation is the dominant process in sulphate promotion.