Modeling of Glycerol Steam Reforming for Hydrogen Production over Bimetallic Co-Ni/Al2O3

Glycerol steam reforming has been performed in a packed-bed micro reactor containing bimetallic Co-Ni/Al2O3 for reaction temperatures between 798 and 700 K at atmospheric pressure. Glycerol consumption rate data analysis implicates fractional orders with respect to both glycerol (0.25) and steam (0.36) with an activation energy of 63.3 kJ mol-1. Similar treatment for H2, CO2, CO, and CH4 production rate evinced positive fractional orders for both reactants with the exception of CO which has mild inhibition by steam (-0.065). The steam reforming of the main biodiesel by-product, glycerol, has been catching up the interest of the scientific community in the recent years. Hydrogen itself is seen as a very attractive clean fuel for the future. Therefore, the glycerol steam reforming(GSR) process would have a tremendous global environmental impact. In the recent years, intensive research regarding GSR thermodynamics, catalysts, reaction mechanisms and kinetics has been done, aiming for describing the process.

کلیدواژه ها:

Glycerol ، Steam reforming ، Hydrogen ، Modeling