CARBON DEPOSITION ON IRON-MANGANESE CHROMIUM SPINELS

被引：5

作者：

ALLEN, GC ^{[1
]}

JUTSON, JA ^{[1
]}

机构：

[1] CENT ELECT GENERATING BOARD,BERKELEY NUCL LABS,BERKELEY GL13 9PB,GLOS,ENGLAND

来源：

JOURNAL OF MATERIALS CHEMISTRY | 1991年 / 1卷 / 01期

关键词：

CARBON DEPOSITION; TRANSITION-METAL SPINEL OXIDE; AUGER ELECTRON SPECTROSCOPY; MANGANESE OXIDE; SCANNING ELECTRON MICROSCOPY;

D O I：

10.1039/jm9910100073

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：

Previous studies have indicated that carbon is deposited on spinel-type oxides containing manganese, iron, nickel and chromium. Such deposits are often associated with particles containing iron, nickel or manganese. To identify the role played by manganese, spinels containing this element in combination with iron and chromium have been exposed to CO2-(1%)CO atmospheres in a gamma-cell at 550 and 650-degrees-C. Examination of these surfaces by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) has shown that manganese-iron spinels (together with MnO) promote the formation of both filamentary and dense carbon, but that the presence of chromium inhibits this behaviour.

引用

页码：73 / 78

页数：6

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