Transcription of Hydrogen production by electrolysis - .NET Framework
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Hydrogen production by electrolysis - .NET Framework
Hydrogen production by electrolysis Ann Cornell, Department of Chemical Engineering, KTH.. Sources for Hydrogen International Energy Agency. Technology Roadmap . Hydrogen and Fuel Cells, 2015. electrolysis 4%. Coal electrolysis 18% 22%. Natural gas Natural gas 48% 37%. Coal Oil refineries 33%. 30%. Biomass 8%. Today Prediction year 2050. electrolysis for H2- production Only large scale alternative for fossil-free production Expensive method Pure gases produced Water electrolysis : Acidic conditions Alkaline conditions Anode H2O O2 + 2H+ + 2e- 2OH- O2 + 2H2O + 2e- Cathode 2H+ + 2e- H2 2H2O + 2e- H2 + 2OH- Total reaction: H2O H2 + O2.
Hydrogen from chlorate production . Anode reaction oxidation of alcohols, sugars etc organic compounds . Equilibrium cell voltage Oxygen evolution ( water electrolysis) E eq = 1.23 V at 25oC . Alcohol oxidation corresponding E. eq ~ 0.1- 0.2 V . Electricity need directly proportional to the cell voltage (E.
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