Recycling of the Supporting Electrolyte Tetra(n-butyl)ammonium Hexafluorophosphate from Used Electrolyte Solutions

Procedures are designed for the recycling of the supporting electrolyte tetra(n-butyl)ammonium hexafluorophosphate (TBAHFP) from electrolyte solutions used for electroanalytical or electrosynthetic purposes. The quality of the recycled product is assessed from cyclic voltammograms and is comparable to TBAHFP from the original synthesis.