Contradictory results about the best oxidic precursor of Fe ammonia synthesis catalyst prompted the present comparative investigation on wustite- and magnetite-based catalysts. Many physical (density, porous texture, crystalline phases, reduction rate, metal surface, abrasion loss) and catalytic (kinetic constants, thermoresistancy) properties have been determined on both catalysts. The wustite-based catalyst proved to be much more active, especially at lower temperatures, approaching the performances of Ru/C catalyst, except at high conversion. Possible reasons for such a behavior of the wustite-based catalyst are discussed, suggesting that a reconsideration of the present consolidated knowledge on Fe ammonia synthesis catalyst might be convenient. © 2003 Elsevier Science B.V. All rights reserved.
|Data di pubblicazione:||2003|
|Titolo:||Wustite as a new precursor of industrial ammonia synthesis catalysts|
|Rivista:||APPLIED CATALYSIS A: GENERAL|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1016/S0926-860X(03)00313-2|
|Appare nelle tipologie:||2.1 Articolo su rivista |
File in questo prodotto:
|AppCatA1.pdf||Documento in Post-print||Accesso chiuso-personale||Riservato|