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

Irene O. Y. Liu; Noel W. Cant; Markus Kögel; Thomas Turek

doi:10.1023/A:1019029307571

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

Irene O. Y. Liu, Noel W. Cant^*, Markus Kögel, Thomas Turek

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

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 N₂ for temperatures up to 280°C and NO conversions of 25% with a maximum HCN concentration of ∼150 ppm formed at 315°C. However, introduction of 0.7% water causes the subsequent conversion of about one-half the HCN to N₂, 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.

Original language	English
Pages (from-to)	241-244
Number of pages	4
Journal	Catalysis Letters
Volume	63
Issue number	3-4
DOIs	https://doi.org/10.1023/A:1019029307571
Publication status	Published - Dec 1999

Keywords

Fe-MFI
hydrogen cyanide
isobutane
NO reduction

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

abstract = "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 N2 for temperatures up to 280°C and NO conversions of 25% with a maximum HCN concentration of ∼150 ppm formed at 315°C. However, introduction of 0.7% water causes the subsequent conversion of about one-half the HCN to N2, 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.",

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T1 - The formation of HCN during the reduction of NO by isobutane over Fe-MFI made by solid-state ion exchange

AU - Liu, Irene O. Y.

AU - Cant, Noel W.

AU - Kögel, Markus

AU - Turek, Thomas

PY - 1999/12

Y1 - 1999/12

N2 - 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 N2 for temperatures up to 280°C and NO conversions of 25% with a maximum HCN concentration of ∼150 ppm formed at 315°C. However, introduction of 0.7% water causes the subsequent conversion of about one-half the HCN to N2, 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.

AB - 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 N2 for temperatures up to 280°C and NO conversions of 25% with a maximum HCN concentration of ∼150 ppm formed at 315°C. However, introduction of 0.7% water causes the subsequent conversion of about one-half the HCN to N2, 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.

KW - Fe-MFI

KW - hydrogen cyanide

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

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