NDLI: The Formation and Reactions of Hydrogen Cyanide During Isobutane-SCR over Fe-MFI Catalysts

Content Provider	Springer Nature Link
Author	Liu, Irene O. Y. Cant, el W.
Copyright Year	2003
Abstract	The extent to which HCN is produced as a significant product during isobutane-SCR over Fe-MFI catalysts has been investigated together with its origin and further conversion. Catalysts made by both vapor-phase sublimation and solid-state ion exchange can produce well over 100-ppm HCN, which is a major intermediate for N2 production, but the peak concentration is less with the former material due to a higher oxidation activity. HCN production is confined to temperatures giving partial conversion of isobutane, when deposited material suppresses the very high intrinsic activity of Fe-MFI for the further conversion of HCN to N2, largely via hydrolysis to ammonia and NH3-SCR. Activity for the oxidation of NO to NO2 is similarly suppressed. This oxidation step is likely to be the rate determining one in isobutane-SCR rather than the activation of the alkane since there is no deuterium kinetic isotope effect. Decomposition of isobutyronitrile, formed by dehydration of a primary nitroso species via its oxime tautomer, is a possible source of HCN. This decomposition gives propene as a coproduct, which reacts completely during isobutane-SCR and may also be a source of deposits through oligomerization. Secondary and tertiary nitroso intermediates cannot react in this way and, based on the reactions of nitroanalogues, are more likely to undergo elimination to form alkenes. The overall effect is to convert alkane-SCR to SCR with alkenes containing the same number or one less carbon atom.
Starting Page	191
Ending Page	202
Page Count	12
File Format	PDF
ISSN	15711013
Journal	Catalysis Surveys from Asia
Volume Number	7
Issue Number	4
e-ISSN	15749266
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2003-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Physical Chemistry Industrial Chemistry/Chemical Engineering Catalysis Characterization and Evaluation Materials
Content Type	Text
Resource Type	Article
Subject	Chemistry Catalysis

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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

Hydrothermal Aging Effects on Fe/SSZ-13 and Fe/Beta NH$_{3}$–SCR Catalysts

Dynamic phenomena of SCR-catalysts containing Fe-exchanged zeolites – experiments and computer simulations

Reaction Mechanisms of Lean-Burn Hydrocarbon SCR over Zeolite Catalysts

In Situ Characterization of Catalysts Active in Partial Oxidations: TS-1 and Fe-MFI Case Studies

Fe-BEA Zeolite Catalysts for NH3-SCR of NOx

New Mechanistic Insights in the NH$_{3}$-SCR Reactions at Low Temperature

Alkali Resistant Fe-Zeolite Catalysts for SCR of NO with NH$_{3}$ in Flue Gases

Low-temperature SCR of NO with NH3 over noble metal promoted Fe-ZSM-5 catalysts

The Formation and Reactions of Hydrogen Cyanide During Isobutane-SCR over Fe-MFI Catalysts

Similar Documents

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

Hydrothermal Aging Effects on Fe/SSZ-13 and Fe/Beta NH$_{3}$–SCR Catalysts

Dynamic phenomena of SCR-catalysts containing Fe-exchanged zeolites – experiments and computer simulations

Reaction Mechanisms of Lean-Burn Hydrocarbon SCR over Zeolite Catalysts

In Situ Characterization of Catalysts Active in Partial Oxidations: TS-1 and Fe-MFI Case Studies

Fe-BEA Zeolite Catalysts for NH3-SCR of NOx

New Mechanistic Insights in the NH$_{3}$-SCR Reactions at Low Temperature

Alkali Resistant Fe-Zeolite Catalysts for SCR of NO with NH$_{3}$ in Flue Gases

Low-temperature SCR of NO with NH3 over noble metal promoted Fe-ZSM-5 catalysts

The Formation and Reactions of Hydrogen Cyanide During Isobutane-SCR over Fe-MFI Catalysts