Issue 43, 2019

Comparative study of vapour phase glycerol dehydration over different tungstated metal phosphate acid catalysts

Abstract

Tungstated metal phosphate (WOx/MP; M = Al, Zr and Ti) solid acid catalysts were examined for vapor phase glycerol dehydration to acrolein and hydroxyacetone. The physico-chemical characteristics of the samples were explored using X-ray diffraction (XRD), N2 sorption, Fourier-transform infrared spectroscopy (FT-IR), UV-visible diffuse reflectance spectroscopy (UV-DRS), and ex situ FT-IR investigation of the adsorbed pyridine and ammonia temperature programmed desorption (NH3-TPD) analysis to gain an understanding of the impact of the structural and acidic nature of the catalysts upon changing the metal component. The catalytic activity and selectivity functionalities were interpreted in terms of the acidity and structural properties of the WOx/MP catalysts. The outcomes demonstrated that WOx/TiP was the most selective and stable catalyst during the catalytic dehydration of glycerol owing to the acceptable amount of surface acidity and the substantial number of pores available on its surface. A detailed study on WOx/TiP was also performed to understand the interaction between the tungsten and the TiP support.

Graphical abstract: Comparative study of vapour phase glycerol dehydration over different tungstated metal phosphate acid catalysts

Supplementary files

Article information

Article type
Paper
Submitted
03 Sep 2019
Accepted
28 Sep 2019
First published
17 Oct 2019

New J. Chem., 2019,43, 16860-16869

Comparative study of vapour phase glycerol dehydration over different tungstated metal phosphate acid catalysts

S. Ginjupalli, P. Balla, H. Shaik, N. Nekkala, B. Ponnala and H. Mitta, New J. Chem., 2019, 43, 16860 DOI: 10.1039/C9NJ04484A

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