RU-CU/SIO2 CATALYSTS - CHARACTERIZATION BY FTIR SPECTROSCOPY

被引：17

作者：

CRISAFULLI, C ^{[1
]}

MAGGIORE, R ^{[1
]}

SCIRE, S ^{[1
]}

GALVAGNO, S ^{[1
]}

机构：

[1] UNIV MESSINA,DIPARTIMENTO CHIM IND,I-98166 SANT AGATA MILITE,ITALY

来源：

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1994年 / 90卷 / 18期

关键词：

D O I：

10.1039/ft9949002809

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：

Silica supported Ru-Cu bimetallic catalysts have been studied by FTIR spectroscopy. Experiments have been carried out on two series of samples prepared from RuCl3 and RU(NO)(NO3)(3). The systems studied contained a total amount of metal of ca. 2 wt.%. On the monometallic Ru/SiO2 samples, adsorption of CO led to an asymmetric band centred at 2036 cm(-1) and two small bands at a higher frequency. The band intensity was greater for the samples prepared from RU(NO)(NO3)(3). CO adsorption on Cu/SiO2, leads to a band at 2117 cm(-1) which easily disappears upon outgassing at room temperature. On the bimetallic samples, the IR spectra indicate the formation Ru-Cu particles having a surface covered mainly by Cu; there is more Cu on the surface of the samples prepared from RUCl(3).

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页码：2809 / 2813

页数：5

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