The formation of HCN during the reduction of NO by isobutane over Fe-MFI made by solid-state ion exchange

被引：24

作者：

Liu, IOY

Cant, NW ^{[1
]}

Kögel, M

Turek, T

机构：

[1] Macquarie Univ, Dept Chem, Sydney, NSW 2109, Australia

[2] Univ Karlsruhe, Inst Chem Verfahrenstech, D-76128 Karlsruhe, Germany

来源：

CATALYSIS LETTERS | 1999年 / 63卷 / 3-4期

关键词：

hydrogen cyanide; NO reduction; isobutane; Fe-MFI;

D O I：

10.1023/A:1019029307571

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：

FTIR analysis of the gaseous products of the selective catalytic reduction of NO by isobutane over a Fe-MFI catalyst made by solid-state ion exchange shows, for the first time, that HCN can be a substantial product. Under dry conditions the amounts formed can exceed that of N-2 for temperatures up to 280 degrees C and NO conversions of 25% with a maximum HCN concentration of similar to 150 ppm formed at 315 degrees C. However, introduction of 0.7% water causes the subsequent conversion of about one-half the HCN to N-2, probably through hydrolysis to NH3 and the NH3-SCR reaction which is very rapid on Fe-MFI. The steps through which HCN forms remain to be established.

引用

页码：241 / 244

页数：4

共 28 条

[1] Potential reaction paths in NOx reduction over Cu/ZSM-5 [J].