Etanol ve sikloheksanin bdd elektrotta elektrooksidasyonunun dems cihazinda çalişilmasi

The electrochemical oxidation of 1.10-3M ethanol and 1.10-4M cyclohexane in 0.5M H2SO4 was studied on boron-doped diamond electrode (BDD) using differential electrochemical mass spectrometry (DEMS) where the dual thin-layer flow-through cell connected directly to the mass spectrometer. We studied the electro-oxidation of ethanol due to its importance as fuel in fuel cell because it produce 12 e- in case of it is complete oxidation CO2 but until now there is a lack in the catalyst which active the cleavage of C-C. It is considered the major renewable biofuel, less toxic than methanol and it has a high energy density. We should break C-C bond and convert to CO2. And cyclohexane is very interesting molecule and we wanted to study the electro-oxidation of cyclohexane. Cyclohexane which is flammable molecule, volatile, is not reactive but very stable. we used BDD electrode as a working electrode because Boron-doped diamond thin films (BDD) have recently attracted as a new electrode material. The major advantage of BDD electrodes is their wide electrochemical window which allows oxidation of organic compounds in aqueous electrolytes. At high electrode potentials hydroxyl radicals (OH?) are produced at the surface. The other properties of BDD are Tough, Resistant to degradation and thermal shock, electrical conductivity, suitable for wastewater treatment and water disinfection, sterilisation and chemically stable. In this work we obtained acetaldehyde as a main intermediate and we obtained 12-24% CO2 and 30-40% acetaldehyde (depends on flow rate and potential ) as main product during ethanol oxidation. For cyclohexane oxidation, we obtained 10-15% CO2 (depend on flow rate ) as a main product.