Oxidation of propane with oxygen and/or nitrous oxide over Fe-ZSM-5 with low iron concentrations

被引：67
|
作者：
Bulánek, R
Wichterlová, B
Novoveská, K
Kreibich, V
机构：
[1] Univ Pardubice, Dept Phys Chem, CZ-53210 Pardubice, Czech Republic
[2] Acad Sci Czech Republ, J Heyrovsky Inst Phys Chem & Electrochem, CZ-18223 Prague 8, Czech Republic
来源：
APPLIED CATALYSIS A-GENERAL | 2004年 / 264卷 / 01期
关键词：
Fe-ZSM5; alpha-oxygen; N2O; propane oxidation; oxidative dehydrogenation; selective oxidations;
D O I：
10.1016/j.apcata.2003.12.020
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：
Oxidation of propane with oxygen, nitrous oxide or oxygen together with nitrous oxide over ZSM-5 zeolites with low concentration of iron (30-1200 ppm) treated at various conditions was studied at 450 degreesC. The highest conversion of propane (51.7%) and selectivity to propene (39.7%) and to the sum of aromatics and oxygenates (11.5%, mainly C1-C3 alcohols) was achieved if a mixture of oxygen with nitrous oxide was used as oxidant over the steamed FeH-ZSM-5. Based on the ESR results this activity was ascribed to extra-framework Fe-oxo complexes generated by hydrolysis of framework Si-O-Fe bonds followed by extraction of iron to extra-framework positions. (C) 2004 Elsevier B.V. All rights reserved.
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收藏
页码：13 / 22
页数：10
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