Catalytic performance of Pt-promoted zeolite catalysts in alkane isomerization highly depends on the synergistic effect between metal and acid sites. Traditional impregnation synthesis leads to large and nonuniform Pt clusters on external surface of zeolites. An approach based on the Surface Organometallic Chemistry concept was employed to controllably synthesize Pt/Hβ catalysts. The grafting of dimethyl (1,5-cyclooctadiene)platinum (II) at the surface of dehydroxylated Hβ surface and hydrogenolysis of surface organometallic compound result in small Pt clusters (1.73 nm), which are uniformly dispersed on the mesopores of Hβ zeolite. The achieved Pt/Hβ catalyst shows high activity and stability in n-butane isomerization.

Pt促进的沸石催化剂在烷烃异构化中的催化性能高度依赖于金属和酸性位点之间的协同效应。传统的浸渍合成导致沸石外表面上大而不均匀的Pt团簇。采用基于表面有机金属化学概念的方法可控制地合成Pt /Hβ催化剂。在去羟基化的Hβ表面上接枝二甲基（1,5-环辛二烯）铂（II）和表面有机金属化合物的氢解产生小的Pt团簇（1.73 nm），它们均匀地分散在Hβ沸石的介孔上。所获得的Pt /Hβ催化剂在正丁烷异构化中显示出高活性和稳定性。