1. Original Synthesis of Molybdenum Nitrides Using Metal Cluster Compounds as Precursors: Applications in Heterogeneous Catalysis
- Author
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Naoki Ohashi, Fabien Grasset, Helena Kaper, Franck Tessier, Stéphane Cordier, Kevin Guy, Tetsuo Uchikoshi, Yoshio Matsui, Yoshitaka Matsushita, Toshiaki Takei, Mitsuaki Nishio, David Lechevalier, Caroline Tardivat, Noée Dumait, Valérie Demange, Institut des Sciences Chimiques de Rennes (ISCR), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), National Institute for Materials Science (NIMS), Laboratory for Innovative Key Materials and Structures (LINK), SAINT-GOBAIN-National Institute of Materials Science-Centre National de la Recherche Scientifique (CNRS), laboratoire de synthèse et fonctionnalisation des céramiques (LSFC), SAINT-GOBAIN-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Synthèse et Fonctionnalisation de Céramiques (LSFC), Saint Gobain-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Faculty of Engineering, Information and Systems [Tsukuba], Université de Tsukuba = University of Tsukuba, University of Rennes 1 (UR1), Saint-Gobain Research Provence (SGRP), Centre National de la Recherche Scientifique (CNRS) Centre National de la Recherche Scientifique (CNRS), Japan Society for the Promotion of Science (JSPS) Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science [19H05818], Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Saint-Gobain-National Institute of Materials Science-Centre National de la Recherche Scientifique (CNRS), and Saint-Gobain-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Transition metal nitrides ,Materials science ,General Chemical Engineering ,chemistry.chemical_element ,02 engineering and technology ,General Chemistry ,Nitride ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Heterogeneous catalysis ,01 natural sciences ,0104 chemical sciences ,Catalysis ,Metal ,chemistry ,Transmission microscopy ,Chemical engineering ,Molybdenum ,visual_art ,Materials Chemistry ,visual_art.visual_art_medium ,Cluster (physics) ,[CHIM]Chemical Sciences ,0210 nano-technology - Abstract
International audience; Transition metal nitrides (TMN) form a class of materials with unique physical and chemical properties. Among them, molybdenum nitrides are mainly used as high-performance magnets or catalysts for a wide range of reactions. This work aims at developing innovative syntheses to prepare nanostructured TMN from metallic clusters for heterogeneous catalysis. The use of a nanoscale precursor such as (TBA)(2) Mo6Br14 (TBA = tetrabutylammonium = (C4H9)(4)N+) enables us to reach different molybdenum nitride compositions (Mo2N, Mo5N6) by thermal reaction under ammonia at relatively low temperatures. Such a novel synthetic approach highlights the prime importance of the starting material to stabilize specific stoichiometries. The impact of this new synthetic route is characterized by several techniques including electron probe microanalysis and high-resolution transmission microscopy. Moreover,catalytic properties of these potential cost-effective catalysts are investigated for the Water-Gas Shift Reaction.
- Published
- 2020
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