SELECTIVITIES FOR HYDROCARBON REACTIONS ON SMSI TITANIA-SUPPORTED PLATINUM FORMED BY HIGH-TEMPERATURE REDUCTION

被引：20

作者：

CLARKE, JKA

DEMPSEY, RJ

BAIRD, T

ROONEY, JJ

机构：

[1] UNIV GLASGOW,DEPT CHEM,GLASGOW G12 8QQ,SCOTLAND

[2] QUEENS UNIV BELFAST,BELFAST BT9 5AG,ANTRIM,NORTH IRELAND

来源：

JOURNAL OF CATALYSIS | 1990年 / 126卷 / 02期

关键词：

D O I：

10.1016/0021-9517(90)90005-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

High-temperature reduced (HTR) Pt/TiO2 catalysts exhibit strong metal-support interaction (SMSI) as inferred from negligible hydrogen chemisorption take-up and moderate activity for skeletal reactions of alkanes. Using model reactants αγ, αδ and αδ hydrogenolysis routes are found whereas αβ hydrogenolysis is more severely depressed. Terminal C-C bond scission in hydrogenolysis as well as suppression of bond-shift rearrangement and of SCM cyclisation indicate a strong preference for carbanionic Pt-alkyl bond formation and are compatible with an electron shift from TiOx moieties to Pt in these HTR Pt/TiO2 catalysts. © 1990.

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页码：370 / 380

页数：11

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