| Popis: |
The formation and reduction of gold oxide in wet ionic liquid (IL), N-trimethyl-N-butylammonium bis(trifluoromethanesulfonyl)imide, ([Me3NnBu][TFSI]) is examined. The water concentration is determined using both the charge and peak current from the reduction of gold oxide and compared directly with Karl Fischer data. The quantitative determination of water in the IL is demonstrated for concentrations between 0.09 and 0.74 by weight (w%). The treatment of wet IL with dry nitrogen or molecular sieves reduces the water below background levels. Finally, methods for acid neutralization and the reduction of water with molecular sieves are conducted to minimize their impact on subsequent electrochemical measurements. |
