Peculiar Concentration Dependence of H/D Exchange Reaction in 1-Butyl-3-methylimidazolium Tetrafluoroborate-D2O Mixtures

Hiroshi Abe, Naohiro Hatano, Yusuke Ima, Souichi Ohta, Akio Shimizu, Yukihiro Yoshimura
2011 Open Journal of Physical Chemistry  
We have investigated the H/D exchange reaction between heavy water and an ionic liquid, 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF 4 ]), throughout the whole concentration region as a function of D 2 O mol% at room temperature. We expected that the extent of the H/D reaction would increase linearly with increasing content of D 2 O, but the results show an extended N-shaped behavior having a small maximum at around 40 mol% and the reaction becomes very slow at a specific
more » ... specific concentration around 80 mol%. We found that this non-linear concentration dependence correlates with the pD dependence of the solutions.
doi:10.4236/ojpc.2011.13010 fatcat:pqlirvvhofanvhhzcqjpk2w624