Kinetics of the reaction between boron trifluoride methanol complex and sodium methoxide to produce enriched ¹⁰B methylborate

Abstract

The relation of boron trifluoride concentration with conductivity in boron trifluoride methanol solution (BF₃-CH₃OH)was power exponent fitted in low concentration range. The kinetics of the reaction between boron trifluoride methanol complex and sodium methoxide to produce enriched ¹⁰B methylborate was proposed based on a detailed mechanism study, and was verified by acid-base titration method and conductivity method. It was found that this reaction is first order reaction and the rate constant is 0.022 min⁻¹ at 338 K(65 °C), the activity energy is 65 kJ/mol. In addition, it was found that the conductivity method is more feasible to measure the kinetic curve than acid-base titration method.

Keywords

boron trifluoride methanol complex / sodium methoxide / conductivity / kinetics

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