@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} }
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 -
Transition to Zero Pollution is a flagship initiative of the Imperial's Academic Strategy, with a vision to realise a sustainable zero pollution future. The initiative brings researchers from different disciplines together to take a systems approach to tackling pollution in all its forms.