SUPPORTED IRIDIUM CATALYSTS - COMPARISON BETWEEN RESISTANCE TO SULFUR POISONING AND HYDRODESULFURIZATION PROPERTIES

被引：26

作者：

FRETY, R ^{[1
]}

DASILVA, PN ^{[1
]}

GUENIN, M ^{[1
]}

机构：

[1] CEPED, PROGRAMA QUIM, CAMACARI, BA, BRAZIL

来源：

APPLIED CATALYSIS | 1990年 / 57卷 / 01期

关键词：

D O I：

10.1016/S0166-9834(00)80726-5

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：

Iridium particles of 1 nm mean particle size were deposited on carriers of varying acidity. As the acidity of the support increases, the sulphur tolerance of the catalysts increases whereas the hydrodesulphurization ability decreases. A model is proposed in order to explain the results, in which metallic iridium particles, deposited on an acidic carrier, are electron deficient, leading to a weak IrS bond in the presence of hydrogen. © 1990.

引用

页码：99 / 103

页数：5

共 15 条

[1] DETERMINATION OF THE DISPERSITY OF SUPPORTED PLATINUM CATALYSTS BY HYDROGEN, OXYGEN OR CARBON-MONOXIDE CHEMISORPTION AND HYDROGEN-OXYGEN TITRATIONS, USING VOLUMETRIC, GRAVIMETRIC AND CATHAROMETRIC TECHNIQUES [J].