Table of Contents
ISRN Chemical Engineering
Volume 2012, Article ID 591587, 10 pages
http://dx.doi.org/10.5402/2012/591587
Research Article

Steam Reforming of Glycerol for Hydrogen Production over Catalyst

1Inorganic and Physical Chemistry Division, Indian Institute of Chemical Technology, Hyderabad 500 607, India
2Department of Chemical Engineering, Hampton University, Hampton, VA 23668, USA
3Coal and Gas Technology Division, Indian Institute of Chemical Technology, Hyderabad 500 607, India

Received 5 October 2012; Accepted 24 October 2012

Academic Editors: T. García, L. Jiang, and M. Kostoglou

Copyright © 2012 G. Sadanandam et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The performance of catalyst for glycerol reforming has been investigated in fixed-bed reactor using careful tailoring of the operational conditions. In this paper, a commercial Engelhard catalyst has been sized and compared to gas product distribution versus catalyst size, water-to-carbon ratio, and stability of the catalyst system. catalysts of three sizes (, , and  mm) are evaluated using glycerol: water mixture at to produce 2 L H2 g−1 cat h−1. The results indicate that  mm size pellet is showing minimum coking and maintaining same level of conversion even after several hours of reforming activity. Whereas studies on and  mm pellets indicate that carbon formation is affecting the reforming activity. Under accelerated aging studies, with 1 : 9 molar ratio of glycerol to water, 3 mg carbon g−1 cat h−1 was generated in 20 cycles, whereas 1 : 18 feed produced only 1.5 mg carbon g−1 cat h−1 during the same cycles of operation. The catalysts were characterized before and after evaluation by X-ray diffraction (XRD), BET surface area, scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDAX), CHNS analysis, transmission electron microscopy (TEM), and X-ray photo electron spectroscopy (XPS).