CHARACTERIZATION OF THE STANDARD PLATINUM SILICA CATALYST EUROPT-1 .4. CHEMISORPTION OF HYDROGEN

被引：103

作者：

FRENNET, A ^{[1
]}

WELLS, PB ^{[1
]}

机构：

[1] UNIV HULL, DEPT CHEM, HULL HU6 7RX, N HUMBERSIDE, ENGLAND

来源：

APPLIED CATALYSIS | 1985年 / 18卷 / 02期

关键词：

DESORPTION - HYDROGEN - Adsorption - PLATINUM COMPOUNDS;

D O I：

10.1016/S0166-9834(00)84004-X

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：

Isotherms for hydrogen adsorption on reduced EUROPT-1 (253 to 771 K) and for hydrogen desorption from EUROPT-1 (193 to 592 K) have been measured by the volumetric method over a wide range of pressure. The extent of hydrogen adsorption has also been measured by frontal chromatography. The total hydrogen chemisorption capacity of EUROPT-1, reduced below 573 K without sintering and evacuated, is 200 micromol g** minus **1. Temperature programmed desorption of hydrogen has revealed the existence of four states of adsorbed hydrogen. The most strongly held state is assigned to spillover hydrogen located, before desorption, on the support.

引用

页码：243 / 257

页数：15

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