Hydroquinone as a Proton Donor in Ambient-Temperature Chloroaluminate Ionic Liquids: Reaction with Chloride Ion

摘要

The reaction of water and hydroquinone (H2Q) as proton donors in either N-1-butylpyridinium chloride (BuPyC1)- or 1-methyl-3-ethylimidazolium chloride (1 mC1)-aluminum chloride ambient temperature ionic liquids has been investigated. Amperometric titrations of free chloride ion indicate that H2Q reacts with 2 C1(-), suggesting that HC1 is undissociated in the molten salt. Comparison of the D/T values, where D, , and T are the diffusion coefficients, viscosity, and temperature, respectively, suggest that both water and H2 give rise to two HC1 molecules. Other observations regarding the interaction of water with the ambient temperature molten salt are reported. Keywords: Chloroaluminate molten salts; Proton interactions; Hydroquinone.