Bio-ethanol steam reforming on Ni based catalyst. Kinetic study

The performance of catalytic membrane reactors (CMRs) depends on the specific details of interactions at different levels between catalytic and separation parts. A clear understanding of decisive factors affecting their operational parameters can be provided via mathematical simulations. In the present paper, main results of numerical studies of ethanol steam reforming, followed by downstream hydrogen permeation through an asymmetric supported membrane, are reported. The membrane module consists of a thin selective layer supported on a substrate with graded porous structure. One-dimensional isothermal reaction–transport model for the CMR has been developed, and its validation has been carried out by using performance data from a lab-scale reactor with a disk-shaped membrane. Simulations demonstrate the model’s capabilities to analyze local concentrations gradients, as required to provide accurate estimates of the relationship between structure–property–performance. It was shown that transport properties of multilayer asymmetric membranes are highly related to the structural properties of each single layer.

Download Full-text

Effects of LHSV and Reaction Temperature upon Ethanol-Steam-Reforming Performance

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B ◽

10.1299/kikaib.78.415 ◽

2012 ◽

Vol 78 (787) ◽

pp. 415-419 ◽

Cited By ~ 3

Author(s):

Toshio SHINOKI ◽

Tsuyoshi MAEDA ◽

Jiro FUNAKI ◽

Katsuya HIRATA

Keyword(s):

Reaction Temperature ◽

Steam Reforming ◽

Ethanol Steam Reforming ◽

Ethanol Steam

Download Full-text

Ethanol steam reforming over Rh/CexZr1−xO2 catalysts: Impact of the CO–CO2–CH4 interconversion reactions on the H2 production

Applied Catalysis B Environmental ◽

10.1016/j.apcatb.2007.10.002 ◽

2008 ◽

Vol 79 (1) ◽

pp. 17-25 ◽

Cited By ~ 66

Author(s):

Anne Birot ◽

Florence Epron ◽

Claude Descorme ◽

Daniel Duprez

Keyword(s):

Steam Reforming ◽

H2 Production ◽

Ethanol Steam Reforming ◽

Ethanol Steam

Download Full-text

Hydrogen Production from Ethanol Steam Reforming: Fixed Bed Reactor Design

International Journal of Chemical Reactor Engineering ◽

10.2202/1542-6580.1582 ◽

2008 ◽

Vol 6 (1) ◽

Cited By ~ 2

Author(s):

Pablo Giunta ◽

Norma Amadeo ◽

Miguel Laborde

Keyword(s):

Steam Reforming ◽

Flow Model ◽

Multicomponent Mixture ◽

Plug Flow ◽

Fixed Bed ◽

Fixed Bed Reactor ◽

Ethanol Steam Reforming ◽

Heterogeneous Model ◽

Ethanol Steam ◽

Hydrogen Stream

The aim of this work is to design an ethanol steam reformer to produce a hydrogen stream capable of feeding a 60 kW PEM fuel cell applying the plug flow model, considering the presence of the catalyst bed (heterogeneous model). The Dusty-Gas Model is employed for the catalyst, since it better predicts the fluxes of a multicomponent mixture. Moreover, this model has shown to be computationally more robust than the Fickian Model. A power law-type kinetics was used. Results showed that it is possible to carry out the ethanol steam reforming in a compact device (1.66 x 10 -5 to 5.27 x 10 -5 m3). It was also observed that this process is determined by heat transfer.

Download Full-text

H2-production from CO2-assisted ethanol steam reforming: The regeneration of Ni-based catalysts

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2015.01.061 ◽

2015 ◽

Vol 40 (15) ◽

pp. 5256-5263 ◽

Cited By ~ 19

Author(s):

Lukasz Bednarczuk ◽

Pilar Ramírez de la Piscina ◽

Narcís Homs

Keyword(s):

Steam Reforming ◽

H2 Production ◽

Ethanol Steam Reforming ◽

Ethanol Steam

Download Full-text

Ethanol Steam Reforming by Ni Catalysts for H2 Production: Evaluation of Gd Effect in CeO2 Support

Catalysis Letters ◽

10.1007/s10562-021-03875-3 ◽

2022 ◽

Author(s):

Gabriella R. Ferreira ◽

Francisco G. E. Nogueira ◽

Alessandra F. Lucrédio ◽

Elisabete M. Assaf

Keyword(s):

Steam Reforming ◽

H2 Production ◽

Ethanol Steam Reforming ◽

Ni Catalysts ◽

Ethanol Steam

Download Full-text

Ethanol Steam Reforming on Rh: Microkinetic Analyses on the Complex Reaction Network

Catalysis Science & Technology ◽

10.1039/d1cy01202a ◽

2021 ◽

Author(s):

Tangjie Gu ◽

Wen Zhu ◽

Bo Yang

Keyword(s):

Hydrogen Production ◽

Steam Reforming ◽

Reaction Pathway ◽

Reaction Network ◽

Ethanol Steam Reforming ◽

Complex Reaction ◽

Ethanol Steam

Ethanol steam reforming is one of the most widely used processes for hydrogen production, but the mechanism of the whole reaction pathway from ethanol to CO and CO2 has not...

Download Full-text