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  Ammonia Decomposition over Iron Phthalocyanine-Based Materials

Tüysüz, H., Schüth, F., Zhi, L. J., Muellen, K., & Comotti, M. (2015). Ammonia Decomposition over Iron Phthalocyanine-Based Materials. ChemCatChem, 7(9), 1453-1459. doi:10.1002/cctc.201500024.

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 Creators:
Tüysüz, Harun1, Author              
Schüth, Ferdi2, Author              
Zhi, Lin J.3, Author              
Muellen, Klaus4, Author              
Comotti, Massimiliano2, Author              
Affiliations:
1Research Group Tüysüz, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1950290              
2Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445589              
3MPI for Polymer Research, Max Planck Society, ou_1309545              
4Dept. Müllen: Synthetic Chemistry, MPI for Polymer Research, Max Planck Society, ou_1800289              

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Free keywords: ammonia decomposition; carbon; catalyst; iron; pyrolysis
 Abstract: Iron phthalocyanine-based materials have been used herein as efficient catalysts for the ammonia decomposition reaction. These materials showed high activity, even superior to that showed by the commercial nickel-based catalyst and iron-doped carbon nanotubes, which were used as benchmarks in this study. Catalyst stability under reaction conditions appeared satisfactory, because no deactivation phenomena were observed. The type of the phthalocyanine precursor did not affect the catalytic performance; however, the preparation method had a strong effect. If the resulting material was exposed to the reaction conditions, some structural modification occurred. No clear correlation between phase composition and activity could be established because similar nitrogen content and similar crystalline domains in the sample led to different behaviors. However, the results of extensive characterization suggested that catalytic activities and conversion profiles were most likely dependent on material textural properties and thus on the preparation method used. The accessibility of iron species seems to be limited for catalysts prepared under vacuum. These phenomena are most likely responsible for the activation profile and for the low catalytic activity typical of these materials. In contrast, higher accessibility of iron species, typical of materials prepared under argon, would lead to improved and stable catalytic performance.

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Language(s): eng - English
 Dates: 2015-04-282015-05-04
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1002/cctc.201500024
 Degree: -

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Title: ChemCatChem
  Other : ChemCatChem
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 7 (9) Sequence Number: - Start / End Page: 1453 - 1459 Identifier: ISSN: 1867-3880
CoNE: https://pure.mpg.de/cone/journals/resource/1867-3880