Reduction of MgO-supported iron oxide: formation and characterization of Fe/MgO catalysts

被引：17
|
作者：
Bond, G [1 ]
Molloy, KC [1 ]
Stone, FS [1 ]
机构：
[1] Univ Bath, Sch Chem, Bath BA2 7AY, Avon, England
来源：
SOLID STATE IONICS | 1997年 / 101卷
关键词：
iron; iron oxide; reduction; magnesium oxide support;
D O I：
10.1016/S0167-2738(97)00179-3
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：
Fe-oxide/MgO (5-30 mol% Fe) was prepared by calcination of coprecipitated precursors. Reducibility in H-2 at 693 K was measured gravimetrically and volumetrically. All samples yielded metallic iron (Fe-o) suitable for catalytic use but much unreduced Fe2+ remained, stabilized by the MgO. The mean particle size of the supported metallic iron was determined by X-ray line-broadening and its surface area by CO chemisorption, Mossbauer spectroscopy confirmed the presence of Fe-o, Fe2+ and Fe3+ in the reduced material.
引用
收藏
页码：697 / 705
页数：9
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