FTIR EVIDENCE OF THE FORMATION OF PLATINUM CARBONYLS FROM PT METAL-CLUSTERS ENCAGED IN KL ZEOLITE

被引：43

作者：

STAKHEEV, AY ^{[1
]}

SHPIRO, ES ^{[1
]}

JAEGER, NI ^{[1
]}

SCHULZEKLOFF, G ^{[1
]}

机构：

[1] UNIV BREMEN, INST ANGEW & PHYS CHEM, D-28334 BREMEN, GERMANY

来源：

CATALYSIS LETTERS | 1995年 / 34卷 / 3-4期

关键词：

PLATINUM CARBONYLS; KL ZEOLITE SUPPORTED PT; CO CHEMISORPTION ON PT; IR SPECTROSCOPY;

D O I：

10.1007/BF00806878

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：

Reactivity of Pt metal clusters supported on KL zeolite toward CO was studied by FTIR spectroscopy. Investigation of the CO adsorption was performed within a wide CO pressure range (1-500 mbar). IR data on the CO adsorption at high pressure (500 mbar) suggest the transformation of the finest Pt particles into neutral Pt carbonyls ((Zeol-O:)(m)Pt-x(CO)(y)) stabilized by the basic oxygen atoms of the KL framework. The transformation is found to be readily reversible upon CO adsorption-desorption at room temperature (RT).

引用

页码：293 / 303

页数：11

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