TY - JOUR
T1 - A 1H NMR Pulse Gradient Spin-Echo (PGSE) Mass Transport Study of Dimethyl Oxalate and Ethylene Glycol
T2 - 224th ACS National Meeting
AU - Suarez-Gustave, S.
AU - Greenbaum, S.
AU - Chung, S. H.
AU - Peled, E.
AU - Duvdevani, T.
AU - Aharon, A.
AU - Melman, A.
PY - 2002/3
Y1 - 2002/3
N2 - The mass transport represented by the self-diffusion coefficient (D) of methanol and two alternative fuels, dimethyl oxalate (DMO) and ethylene glycol (EG), in new low-cost nanoporous proton conducting membrane (PCM) was studied to aid in the development of the Direct Oxidation Fuel Cell (DOFC). As replacement fuels for methanol, EG and DMO offered lower membrane permeability indicated by the lower values of CH self-diffusion coefficient obtained for the equilibrated NP-PCM's. Electrochemical measurements indicated that the NP-PCM exhibit low crossover while retaining high protonic conductivity. Of the five NP-PCM investigated, one particular membrane that exhibited low crossover in electrochemical evaluations gave the highest OH and CH self-diffusion values almost independent of fuel type.
AB - The mass transport represented by the self-diffusion coefficient (D) of methanol and two alternative fuels, dimethyl oxalate (DMO) and ethylene glycol (EG), in new low-cost nanoporous proton conducting membrane (PCM) was studied to aid in the development of the Direct Oxidation Fuel Cell (DOFC). As replacement fuels for methanol, EG and DMO offered lower membrane permeability indicated by the lower values of CH self-diffusion coefficient obtained for the equilibrated NP-PCM's. Electrochemical measurements indicated that the NP-PCM exhibit low crossover while retaining high protonic conductivity. Of the five NP-PCM investigated, one particular membrane that exhibited low crossover in electrochemical evaluations gave the highest OH and CH self-diffusion values almost independent of fuel type.
UR - http://www.scopus.com/inward/record.url?scp=0344551846&partnerID=8YFLogxK
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AN - SCOPUS:0344551846
SN - 0569-3772
VL - 47
SP - 370
EP - 371
JO - ACS Division of Fuel Chemistry, Preprints
JF - ACS Division of Fuel Chemistry, Preprints
IS - 1
Y2 - 7 April 2002 through 11 April 2002
ER -