Synthesis of acicular hematite catalysts with tailored porosity

被引：42
作者：
Pérez-Maqueda, LA
Criado, JM
Subrt, J
Real, C
机构：
[1] Univ Sevilla, CSIC, Ctr Mixto, Inst Ciencias Mat Sevilla, Seville, Spain
[2] Acad Sci Czech Republ, Inst Inorgan Chem, CZ-25068 Rez, Czech Republic
来源：
CATALYSIS LETTERS | 1999年 / 60卷 / 03期
关键词：
acicular hematite; porosity; controlled rate thermal analysis (CRTA);
D O I：
10.1023/A:1019063109020
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：
The topotactic thermal decomposition of a synthetic acicular goethite sample into hematite has been studied by controlled rate thermal analysis (CRTA). This method allows a precise, simultaneous and independent control of both the partial pressure of water vapour generated from the decomposition of goethite and the decomposition rate of this precursor. It has been demonstrated that the CRTA method allows obtaining acicular particles of alpha-Fe2O3 with tailored porosity oriented along the c lattice axis (the longest axis of the particle). This finding would be of great potential interest from the point of view of the use of this material as a catalyst.
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页码：151 / 156
页数：6
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