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The Haber–Bosch Process Revisited: On the Real Structure and Stability of “Ammonia Iron” under Working Conditions
Author(s) -
Kandemir Timur,
Schuster Manfred E.,
Senyshyn Anatoliy,
Behrens Malte,
Schlögl Robert
Publication year - 2013
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201305812
Subject(s) - ammonia , ammonia production , service (business) , computer science , process (computing) , neutron diffraction , catalysis , chemistry , process engineering , crystal structure , crystallography , organic chemistry , engineering , business , marketing , operating system
In situ neutron diffraction was used to study the structural properties of an industrial ammonia synthesis catalyst under working conditions similar to those of the Haber–Bosch process. Despite favorable thermodynamics, no indications of reversible bulk nitridation of the iron catalyst was observed in a self‐generated ammonia concentration of 12 vol % at 425 °C and 75 bar after 88 h on stream.