Our partners from Eurecat propose new catalysts compositions or catalysts, comprising nanoparticles with metal elements on supports, to be used in the dehydrogenation of alkanes by nODH and also for aromatization of alkanes and cycloalkanes. These catalysts compositions can be defined as nanocatalysts (or nanocatalyst compositions), since they comprise nanoparticles. The catalysts compositions are, in particular, obtained by an also proposed by the inventors innovative nanofabrication approach, for the preparation of more homogeneous nanocatalysts compositions. In addition, these catalysts are in some examples obtained by means of a one-pot reaction at relatively low temperatures (room temperature to 100 °C), thus making the process of synthesis/production more affordable and reproducible than other methods for obtaining similar catalysts. The catalyst compositions are homogeneous and have, in addition, nanoparticles of small size with a wide surface active area. Due to their composition, the catalysts are stable and maintain their catalytic activity in part because their surface is maintained clean (no impurities or deposition of products on their surface and resulting from the reaction they catalyze) for long periods of time.