Alternative route for the synthesis of high surface-area eta-Al2O3/Nb2O5 catalyst from aluminum waste

Author(s)

Nogueira, Francisco G. E. ; Asencios, Yvan J. O. ; Rodella, Cristiane B. ; Porto, Andre L. M. ; Assaf, Elisabete M.

• Document type: Journal article
• Source: Materials Chemistry and Physics; v. 184, p. 23-30, DEC 1 2016.
• Web of Science Citations: 3

Abstract

This paper describes an alternative route for the production of a high-surface-area eta-Al2O3/Nb2O5 catalyst synthesized from aluminum waste and niobium ammonium oxalate (NH4H2{[}NbO-(C2O4)(3)]center dot 3H(2)O). The effects of thermal treatment on the morphology and crystal structure were examined by X-ray powder diffraction (XPD), surface area measurements (BET), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), X-ray fluorescence, dynamic scanning calorimetry (DSC) and thermogravimetry (TG) measurement. The catalysts were evaluated in the glycerol dehydration reaction. Catalytic tests were carried out with reactants in gas phase with a fixed-bed reactor at 300 degrees and 400 degrees C. (C) 2016 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 14/08934-5 - Development of Ni and Nb catalysts for production of hydrogen from bio-oil
• Grantee: Francisco Guilherme Esteves Nogueira
• Support Opportunities: Scholarships in Brazil - Post-Doctoral