THE STATE OF PLATINUM IN PT-AL2O3 CATALYSTS CONTAINING HIGH CHLORIDE LOADING

被引：6
|
作者：
SETHURAMAN, AR
DAVIS, BH
机构：
[1] Center for Applied Energy Research, University of Kentucky, Lexington, 40511, KY
来源：
CATALYSIS LETTERS | 1993年 / 18卷 / 04期
关键词：
PLATINUM; PLATINUM-ALUMINA CATALYSTS; ISOMERIZATION CATALYST; CHLORIDED PT-AL2O3; XPS; ESCA;
D O I：
10.1007/BF00765286
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：
XPS data indicate that Pt in a highly chlorided (5-10% Cl) Pt-Al2O3 catalyst is present in a metallic form, and is not chlorided. Surface chloride concentration decreases following reduction in hydrogen; exposure to oxygen increases the surface chloride concentration. In contrast, reduction of chloride containing Pt-SiO2 catalyst dramatically reduces the chloride level; in addition, treatment with CCl4 appears to reoxidize at least some of the Pt in the Pt-SiO2 catalyst.
引用
收藏
页码：401 / 407
页数：7
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