Imperial College London
Professor Alan Atkinson

ProfessorAlanAtkinson

Faculty of Engineering, Department of Materials

Emeritus Professor
 
 
 
//

Contact

 

+44 (0)20 7594 6780alan.atkinson

 
 
//

Location

 

214Royal School of MinesSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Ruiz-Trejo:2015:10.1016/j.ces.2015.01.047,
author = {Ruiz-Trejo, E and Boldrin, P and Medley-Hallam, JL and Darr, J and Atkinson, A and Brandon, NP},
doi = {10.1016/j.ces.2015.01.047},
journal = {Chemical Engineering Science},
pages = {269--275},
title = {Partial oxidation of methane using silver/gadolinia-doped ceria composite membranes},
url = {http://dx.doi.org/10.1016/j.ces.2015.01.047},
volume = {127},
year = {2015}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Methane was partially oxidised to CO using oxygen permeated through a 1 mm thick silver/Ce0.9Gd0.1O2−x (Ag/CGO) composite membrane operating at 500–700 °C with air at 1 bar pressure. The membranes were fabricated by sintering ultrafine nanoparticles of gadolinia-doped ceria (<5 nm) coated with silver using Tollens reaction. This unique combination led to dense composites with low content of silver (7 vol%), no reaction between the components and predominant metallic conductivity. When feeding 4% methane at 700 °C to a 1-mm thick Ag/CGO using Ni as reforming catalyst, the conversion reached 21% and the CO selectivity 92% with an estimated oxygen flux of 0.18 mL min−1 cm−2 (NTP). The samples were stable in carbon-containing atmospheres and under a large pO2 transmembrane pressure difference at temperatures below 700 °C for 48 h.
AU  - Ruiz-Trejo,E
AU  - Boldrin,P
AU  - Medley-Hallam,JL
AU  - Darr,J
AU  - Atkinson,A
AU  - Brandon,NP
DO  - 10.1016/j.ces.2015.01.047
EP  - 275
PY  - 2015///
SN  - 1873-4405
SP  - 269
TI  - Partial oxidation of methane using silver/gadolinia-doped ceria composite membranes
T2  - Chemical Engineering Science
UR  - http://dx.doi.org/10.1016/j.ces.2015.01.047
UR  - http://hdl.handle.net/10044/1/32859
VL  - 127
ER  -
Download