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.

引用

页码：13 / 22

页数：10

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