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Template Removal via Boudouard Equilibrium Allows for Synthesis of Mesostructured Molybdenum Compounds
Author(s) -
Schieder Martin,
Bojer Carina,
vom Stein Julia,
Koch Sebastian,
Martin Thomas,
Schmalz Holger,
Breu Josef,
Lunkenbein Thomas
Publication year - 2017
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.201610786
Subject(s) - sublimation (psychology) , molybdenum , fugacity , chemistry , oxygen , template , chemical engineering , catalysis , materials science , inorganic chemistry , organic chemistry , nanotechnology , psychology , engineering , psychotherapist
Abstract Oxidative thermal removal of the polymeric templates is not trivial for molybdenum oxides and hampers mesostructuring of this material. At ambient oxygen fugacity, Mo VI is the thermodynamically stable oxidation state and sublimation of MoO 3 leads to a quick loss of the mesostructure through Oswald ripening. Taking advantage of the Boudouard equilibrium allows to fix the oxygen fugacity at a level where non‐volatile MoO 2− x is stable while carbonaceous material may be oxidized by CO 2 . Mesostructured MoO 2− x can be chemically converted into MoO 3 or MoN under retention of the mesostructure.