Ethanol steam reforming using Ni(II)-Al(III) layered double hydroxide as catalyst precursor

2008 ◽  
Vol 138 (1-3) ◽  
pp. 602-607 ◽  
Author(s):  
Mas Verónica ◽  
Baronetti Graciela ◽  
Amadeo Norma ◽  
Laborde Miguel
Keyword(s):  
Layered Double Hydroxide ◽  
Steam Reforming ◽  
Ethanol Steam Reforming ◽  
Catalyst Precursor ◽  
Double Hydroxide ◽  
Ethanol Steam

Ni(II)-Al(III) layered double hydroxide as catalyst precursor for ethanol steam reforming: Activation treatments and kinetic studies

2008 ◽  
Vol 133-135 ◽  
pp. 319-323 ◽  
Author(s):  
Verónica Mas ◽  
María L. Dieuzeide ◽  
Matías Jobbágy ◽  
Graciela Baronetti ◽  
Norma Amadeo ◽  
...  
Keyword(s):  
Layered Double Hydroxide ◽  
Steam Reforming ◽  
Kinetic Studies ◽  
Ethanol Steam Reforming ◽  
Catalyst Precursor ◽  
Double Hydroxide ◽  
Ethanol Steam

scholarly journals Synthesis of Catalytic Ni/Cu Nanoparticles from Simulated Wastewater on Li–Al Mixed Metal Oxides for a Two-Stage Catalytic Process in Ethanol Steam Reforming: Catalytic Performance and Coke Properties

Catalysts ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1124
Author(s):  
Yu-Jia Chen ◽  
Song-Hui Huang ◽  
Jun-Yen Uan ◽  
Hao-Tung Lin
Keyword(s):  
Steam Reforming ◽  
Catalytic Performance ◽  
Ethanol Steam Reforming ◽  
Two Stage ◽  
H2 Generation ◽  
Structured Catalyst ◽  
Carbon Filaments ◽  
Nano Catalysts ◽  
Double Hydroxide ◽  
Ethanol Steam

This work recovered Ni or Cu cations from simulated electroplating wastewater to synthesize Ni/Cu nano-catalysts for H2 generation by ethanol steam reforming (ESR). Aluminum lathe waste was used as a framework to prepare the structured catalyst. Li–Al–CO3 layered double hydroxide (LDH) was electrodeposited on the surface of the framework. The LDH was in a platelet-like structure, working as a support for the formation of the precursor of the metal catalysts. The catalytic performance and the coke properties of a 6Cu_6Ni two-stage catalyst configuration herein used for ESR catalytic reaction were studied. The Cu–Ni two-stage catalyst configuration (6Cu_6Ni) yielded more H2 (~10%) than that by using the Ni-based catalyst (6Ni) only. The 6Cu_6Ni catalyst configuration also resulted in a relatively stable H2 generation rate vs. time, with nearly no decline during the 5-h reaction. Through the pre-reaction of ethanol-steam mixture with Cu/LiAlO2 catalyst, the Ni/LiAlO2 catalyst in the 6Cu_6Ni catalyst configuration could steadily decompose acetaldehyde, and rare acetate groups, which would evolve condensed coke, were formed. The Ni nanoparticles were observed to be lifted and separated by the carbon filaments from the support and had no indication of sintering, contributing to the bare deactivation of the Ni/LiAlO2 catalyst in 6Cu_6Ni.

scholarly journals Effect of Asymmetric Membrane Structure on Hydrogen Transport Resistance and Performance of a Catalytic Membrane Reactor for Ethanol Steam Reforming

Membranes ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 332
Author(s):  
Ludmilla Bobrova ◽  
Nikita Eremeev ◽  
Nadezhda Vernikovskaya ◽  
Vladislav Sadykov ◽  
Oleg Smorygo
Keyword(s):  
Steam Reforming ◽  
Transport Model ◽  
Hydrogen Permeation ◽  
Ethanol Steam Reforming ◽  
Clear Understanding ◽  
Catalytic Membrane ◽  
Structure Property ◽  
Asymmetric Membrane ◽  
Supported Membrane ◽  
Ethanol Steam

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.

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

2012 ◽  
Vol 78 (787) ◽  
pp. 415-419 ◽  
Author(s):  
Toshio SHINOKI ◽  
Tsuyoshi MAEDA ◽  
Jiro FUNAKI ◽  
Katsuya HIRATA
Keyword(s):  
Reaction Temperature ◽  
Steam Reforming ◽  
Ethanol Steam Reforming ◽  
Ethanol Steam

Hydrogen Production from Ethanol Steam Reforming: Fixed Bed Reactor Design

2008 ◽  
Vol 6 (1) ◽  
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.

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

2015 ◽  
Vol 40 (15) ◽  
pp. 5256-5263 ◽  
Author(s):  
Lukasz Bednarczuk ◽  
Pilar Ramírez de la Piscina ◽  
Narcís Homs
Keyword(s):  
Steam Reforming ◽  
H2 Production ◽  
Ethanol Steam Reforming ◽  
Ethanol Steam

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

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
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