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- W2391568093 abstract "In double dielectric barrier discharge aqueous electrodes reactor(DDBD),hydrogen peroxide was prepared in a mixture of hydrogen and oxygen by using DBD discharge with inert gas(Ar,He and N2)as additive gas.The influence of different inert gases on the breakdown voltage and energy efficiency of H2O2synthesis was studied.The results showed that breakdown voltage,conversion of O2,selectivity of H2O2,yield of H2O2and energy efficiency were obviously affected by different inert gases.The breakdown voltage could be reduced with He and Ar as additive gas,however,it became higher when N2 was the additive gas.On the other hand,energy efficiency of H2O2synthesis was reduced dramatically with N2as the additive gas,and little changed with He as the additive gas.However,energy efficiency of H2O2synthesis increased markedly with Ar as the additive gas.When Ar flow rate was 56.6ml.min-1,breakdown voltage could be reduced from 11.8kV to 10.2kV;energy efficiency of H2O2synthesis increased by about 51%,from 3.45g.(kW.h)-1 to 5.20g.(kW.h)-1(100% H2O2).Therefore,the addition of Ar could not only reduce breakdown voltage,but also increase energy efficiency of H2O2 synthesis.The optical emission spectra revealed that Penning ionization effects of metastable state Ar species(696.5,794.8,811.5nm)existing in H2-O2-Ar discharge system might be responsible for the decrease of breakdown voltage.From the waveform of discharge current,the addition of Ar increased electron density,which obviously facilitated the increase of O2conversion and energy efficiency of H2O2 synthesis at the same power." @default.
- W2391568093 created "2016-06-24" @default.
- W2391568093 creator A5087905947 @default.
- W2391568093 date "2012-01-01" @default.
- W2391568093 modified "2023-09-25" @default.
- W2391568093 title "Influence of inert gases on direct synthesis of hydrogen peroxide via hydrogen-oxygen plasma" @default.
- W2391568093 hasPublicationYear "2012" @default.
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