MOSSBAUER STUDY OF THE EVOLUTION OF A LATERITE IRON MINERAL BASED CATALYST - EFFECT OF THE ACTIVATION TREATMENT

被引：10

作者：

CUBEIRO, ML ^{[1
]}

GOLDWASSER, MR ^{[1
]}

ZURITA, MJP ^{[1
]}

FRANCO, C ^{[1
]}

GONZALEZJIMENEZ, F ^{[1
]}

JAIMES, E ^{[1
]}

机构：

[1] CENT UNIV VENEZUELA,FAC CIENCIAS,DEPT FIS,CARACAS 1041A,VENEZUELA

来源：

HYPERFINE INTERACTIONS | 1994年 / 93卷 / 1-4期

关键词：

D O I：

10.1007/BF02072954

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The syngas reaction has been studied using a laterite iron mineral, promoted with K and Mn. In situ activation under syngas, as well as pre-treatment with H-2 followed by CO under mild and more severe conditions were tested. These activation procedures led to different iron phase compositions and to different catalytic selectivities. The C-2-C-4/CH4 ratio was significantly lower for those catalysts which after reaction showed the presence of hexagonal carbide and magnetite compared to the solid, which showed the highest proportion of Hagg carbide.

引用

页码：1831 / 1835

页数：5

共 11 条

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