De Arriba-Mateos, AgustínDelgado-Muñoz, DanielConcepción Heydorn, PatriciaLópez Nieto, José Manuel2024-11-132024-11-132025-01-010920-5861https://riunet.upv.es/handle/10251/211739[EN] Metal-doped hexagonal tungsten oxide bronzes (h-WVOx and h-WNbOx) and metal-doped orthorhombic molybdenum oxide bronzes-M1 type (MoVOx, MoVTeOx and MoVTeNbOx) have been synthesized hydrothermally and heat-treated at 400, 550 or 600 degrees C in N-2. The catalysts were characterized by several techniques and tested in the one-pot aerobic transformation of glycerol at 350 degrees C. From all of them, h-WNbOx resulted as the most selective to acrolein (80 % yield), whereas both h-WVOx and MoVTeNbOx were more effective to acrylic acid (with a yield lower than 25 %). Subsequently, a double-bed reactor comparative study was conducted, with h-WNbOx acting as the first catalytic bed. In this case, the yield to acrylic acid decreased as follows: MoVTeNbOx > MoVTeOx > MoVOx > h-WVOx. IR spectroscopy of acrolein adsorbed on these catalysts allows to explain the catalytic performance of these catalysts.Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)HTB tungsten oxidesMo-V-O M1 catalystsOxydehydration of glycerolAcrylic acidArtículo10.1016/j.cattod.2024.114965Abierto