Keywords Molybdenum carbide · Cubic MoC · Hexagonal β-Mo C · Density functional theory (DFT) · Crystallographic 0.5 2 transformation · Selective hydrogenation · CO chemisorption · Olefins elimination in many types of reactions but new materials are sought 1 Introduction to replace them due to their limited abundance and high price. As pointed out by several authors, for future technologies Transition metal carbides (e.g. Mo, W, Nb or Ta) are an to become sustainable and economically feasible, it is of important group of very interesting materials for catalysis importance to develop novel materials that can be pro- that have been studied for several years. Levy and Boudart duced with the most abundant chemical elements on earth demonstrated in their work, published in 1973, that tungsten [1–8]. The replacement of scarce and/or rare elements carbides behaved similar to platinum for some types of reac- by more abundant ones to design and produce materials tions, and thus, a new era of research in these types of materi- of extensive use is a must. Noble metals like palladium als evolved . Transition metal carbides in bulk or supported or platinum are well-known for their catalytic properties 1 3 906 K. O. Sebakhy et al. form, promoted or not, have
Catalysis Letters – Springer Journals
Published: Feb 2, 2018
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