CHARACTERIZATION OF THE STANDARD PLATINUM SILICA CATALYST EUROPT-1 .2. PREPARATION, PHYSICAL-PROPERTIES, AND CHEMICAL-COMPOSITION

被引：0

作者：

BOND, GC ^{[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：

SILICON COMPOUNDS - SPECTROSCOPIC ANALYSIS;

D O I：

10.1016/S0166-9834(00)84002-6

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：

Pt(NH//3)//4**2** plus was impregnated onto silica by use of an ion exchange method and reduced in hydrogen at 673 K. The platinum content of the as-received material is 6. 3 plus or minus 0. 1% by weight (atomic absorption, spectrophotometry, proton-induced x-ray emission). Weight loss on heating to 413 K is 0. 1% and to 1273 K is 4. 2 plus or minus 0. 1%. BET surface areas of the support in its original state and of EUROPT-1 are 364 plus or minus 10 and 185 plus or minus 5 m**2g** minus **1 respectively. Similar values for the catalyst are given by a gas chromatographic method and by mercury porosimetry. EXAFS spectroscopy shows that the platinum-containing particles in the as-received material are in the form of disordered oxide.

引用

页码：225 / 230

页数：6