Next Article in Journal
Microstructural and Kinetic Evolution of Fe Doped MgH2 during H2 Cycling
Next Article in Special Issue
Carbon Aerogel-Supported Pt Catalysts for the Hydrogenolysis and Isomerization of n-Butane: Influence of the Carbonization Temperature of the Support and Pt Particle Size
Previous Article in Journal / Special Issue
Large Mesopore Generation in an Amorphous Silica-Alumina by Controlling the Pore Size with the Gel Skeletal Reinforcement and Its Application to Catalytic Cracking
Catalysts 2012, 2(3), 386-399; doi:10.3390/catal2030386
Article

Co-Fe-Si Aerogel Catalytic Honeycombs for Low Temperature Ethanol Steam Reforming

1,2
, 1
, 3
 and 1,2,*
Received: 1 August 2012; in revised form: 6 September 2012 / Accepted: 7 September 2012 / Published: 19 September 2012
(This article belongs to the Special Issue Aerogel Catalyst)
View Full-Text   |   Download PDF [1567 KB, uploaded 20 September 2012]   |   Browse Figures
Abstract: Cobalt talc doped with iron (Fe/Co~0.1) and dispersed in SiO2 aerogel was prepared from silica alcogel impregnated with metal nitrates by supercritical drying. Catalytic honeycombs were prepared following the same procedure, with the alcogel synthesized directly over cordierite honeycomb pieces. The composite aerogel catalyst was characterized by X-ray diffraction, scanning electron microscopy, focus ion beam, specific surface area and X-ray photoelectron spectroscopy. The catalytic layer is about 8 µm thick and adheres well to the cordierite support. It is constituted of talc layers of about 1.5 µm × 300 nm × 50 nm which are well dispersed and anchored in a SiO2 aerogel matrix with excellent mass-transfer properties. The catalyst was tested in the ethanol steam reforming reaction, aimed at producing hydrogen for on-board, on-demand applications at moderate temperature (573–673 K) and pressure (1–7 bar). Compared to non-promoted cobalt talc, the catalyst doped with iron produces less methane as byproduct, which can only be reformed at high temperature, thereby resulting in higher hydrogen yields. At 673 K and 2 bar, 1.04 NLH2·mLEtOH(l)−1·min−1 are obtained at S/C = 3 and W/F = 390 g·min·molEtOH−1.
Keywords: hydrogen; aerogel; ethanol steam reforming; monolith; cobalt catalyst; iron catalyst hydrogen; aerogel; ethanol steam reforming; monolith; cobalt catalyst; iron catalyst
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.

Export to BibTeX |
EndNote


MDPI and ACS Style

Domínguez, M.; Taboada, E.; Molins, E.; Llorca, J. Co-Fe-Si Aerogel Catalytic Honeycombs for Low Temperature Ethanol Steam Reforming. Catalysts 2012, 2, 386-399.

AMA Style

Domínguez M, Taboada E, Molins E, Llorca J. Co-Fe-Si Aerogel Catalytic Honeycombs for Low Temperature Ethanol Steam Reforming. Catalysts. 2012; 2(3):386-399.

Chicago/Turabian Style

Domínguez, Montserrat; Taboada, Elena; Molins, Elies; Llorca, Jordi. 2012. "Co-Fe-Si Aerogel Catalytic Honeycombs for Low Temperature Ethanol Steam Reforming." Catalysts 2, no. 3: 386-399.


Catalysts EISSN 2073-4344 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert