Intensifying glycerol steam reforming on a monolith catalyst: A reaction kinetic model

Abstract

In this work, a structured monolithic catalyst has been tested under a wide range of conditions (partial pressure, residence time, temperature and time-onstream), with the aim of modeling its kinetic behavior and assessing its economic and upscaling potential. We have developed a sequential model to help us interpret both main trends and salient features. Unexpected behavior was found for certain parameter values, which led us to consider kinetic parasitic effects such as mass or heat transfer limitations. By independently invoking these effects, a conciliatory view of the results observed could not be reached. A combined explanation may prove successful, although overfitting could not be ruled out at this point. More importantly, however, the observed salient features of this stable and selective monolith catalyst may hold potential for process intensification of glycerol steam reforming, thus contributing to a more sustainable industry.

Lanthanum Effect on Ni/Al2O3 as a Catalyst Applied in Steam Reforming of Glycerol for Hydrogen Production

“…Higher catalyst loads enhanced hydrogen and carbon dioxide selectivity at the expense of carbon monoxide and hydrocarbon concentrations. The variation of WHSV in previous works led to similar results [23,48,49]. The decrease in the residence time of reactants reduced the availability of the active sites, decreasing glycerol steam reforming progress.…”

Oxidative steam reforming of glycerol to synthesis gas in a microchannel reactor

“…Moreover, in accordance with the previous findings [17,22,24], O 2 in the feed helped regulating coke formation and product distribution. Similarly, Bobadilla et al [26,27] reported superiority of Ni-based metallic monoliths in terms of highly active and stable H 2 production by glycerol steam reforming. The authors emphasized that strong interaction between the catalyst particles and the washcoated alumina layer improved functionality of the monolithic catalyst.…”

High Channel Density Ceramic Microchannel Reactor for Syngas Production

“…These microreactors benefit from rapid heat transfer properties which are particularly relevant for endothermic reactions such as reforming reactions. Unlike for DRM, many studies have been conducted for the steam reforming of alcohols or light hydrocarbons in monolithic reactors [15][16][17][18][19][20].…”