Genesis of the active-component precursor in the synthesis of Pt/Al2O3 catalysts:: I.: Transformation of the [PtCl6]2- complex in the interaction between chloroplatinic acid and the γ-Al2O3 surface

被引：12

作者：

Bel'skaya, O. B. ^{[1
]}

Karymova, R. Kh. ^{[1
]}

Kochubey, D. I. ^{[2
]}

Duplyakin, V. K. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Hydrocarbon Proc, Siberian Branch, Omsk 644040, Russia

[2] Russian Acad Sci, Boreskov Inst Catalysis, Siberian Branch, Novosibirsk 630090, Russia

来源：

KINETICS AND CATALYSIS | 2008年 / 49卷 / 05期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1134/S0023158408050170

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：

Gradient elution experiments have revealed the difference between platinum complexes in terms of the strength of their interaction with the alumina surface. A considerable part (30-40%) of the supported platinum is nondesorbable via competitive ion exchange reactions or upon changes in the charge state of the support surface. The surface platinum complexes can be divided into ion-exchangeable and coordinatively fixed species according to the nature of their bonding with aluminum oxide. Combining desorption and spectroscopic methods (EXAFS and diffuse reflectance spectroscopy) has made it possible to characterize the surface complexes. The strongest metal-support interaction takes place in the fixation of hydrolyzed platinum species.

引用

页码：720 / 728

页数：9

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