Gas phase dehydration of glycerol to acrolein over WO₃-based catalysts prepared by non-hydrolytic sol-gel synthesis.

ABSTRACT: Solid acid catalysts based on WO₃-SiO₂ and WO₃-ZrO₂-SiO₂ were prepared by one-pot non-hydrolytic sol-gel method and tested in the gas phase glycerol dehydration to acrolein. Their structural and textural characteristics were determined by X-ray diffraction (XRD), N₂ adsorption, X-ray energy dispersive spectroscopy (XEDS), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). Their acid characteristics were studied by both temperature programmed desorption of ammonia (NH₃-TPD) and FTIR of adsorbed pyridine. Under our operating conditions, all the catalysts were active and selective in the transformation of glycerol to acrolein, which was always the main react

SUBMITTER: Nadji L 

PROVIDER: S-EPMC9079827 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature