SEARCH Articles Figures Tables Effect of dichloroethane on the selectivity to ethylene oxide during ethylene oxidation on Ag YSZ at various imposed catalyst potentials.47 U R -197 mV, T 270 C, P 500 kPa, 3.5 O2,9.5 C2H4. Reprinted with permission from Academic Press. [Publishers Imprint] [Publishers Imprint]