X-RAY PHOTOELECTRON SPECTROSCOPIC CHARACTERIZATION OF OXYGEN-SURFACE SPECIES ON A DOUBLY PROMOTED MANGANESE OXIDE MODEL PLANAR CATALYST - SIGNIFICANCE FOR CH4 COUPLING

被引：10

作者：

MOGGRIDGE, GD ^{[1
]}

BADYAL, JPS ^{[1
]}

LAMBERT, RM ^{[1
]}

机构：

[1] UNIV CAMBRIDGE, DEPT CHEM, CAMBRIDGE CB2 1EW, ENGLAND

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1990年 / 94卷 / 02期

关键词：

D O I：

10.1021/j100365a004

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：

A doubly promoted Mn3O4 planar model catalyst for the oxidative coupling of methane is described. X-ray photoelectron spectroscopic (XPS) observations show that oxygen chemisorption on the K-promoted material results in the chemisorption of O-. Copromotion with K and Cl induces the formation of an entirely new oxygen surface species whose appearance depends critically on the simultaneous presence of both promoters. This is very suggestive of the behavior recently reported for highly active and selective Mn3O4/K/Cl methane coupling catalysts. © 1990 American Chemical Society.

引用

页码：508 / 510

页数：3

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