Abstract
Supported lanthanum oxide catalysts were prepared by the impregnation method, using an aqueous solution of lanthanum nitrate hexahydrate (La(NO3)3·6H2O), then calcined at 920 K for 2 h. Characterization of the samples was carried out by X-ray diffraction, N2-adsorption at −196 °C and IR spectroscopy of the calcination products. The surface acidity was studied by IR spectroscopy of adsorbed pyridine at different temperatures. GC was used to investigate the decomposition of propan-2-ol on the surface of the catalysts. X-ray diffractometry revealed that La2O3 crystallites are dispersed on the silica and alumina surfaces. The surface area of the support was decreased by increasing the loading level of La2O3. It was also found that the surface of the supported catalysts had strong different Lewis acid sites and basic sites. Propan-2-ol was found to decompose to acetone (dehydrogenation). The dehydration reaction gave propene as the sole product.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callSimilar Papers
More From: Phys. Chem. Chem. Phys.
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
