Tetraalkylammonium hydroxide, supported

All these electrolytes are neutral in Bronsted acid-base properties. Although rather exceptional, an acid, a base, or a pH buffer may be added to the supporting electrolyte of neutral salts. The acid-base system to be selected depends on the purpose of the measurement. We often use trifluoromethanesulfonic acid (CF3S03F1) as a strong acid acetic acid, benzoic acid, or phenol as a weak acid an amine or pyridine as a weak base and tetraalkylammonium hydroxide (ILtNOH) as a strong base. Examples of buffer systems are the mixtures of picric acid and its R4N-salt and amines and their PlCl04-salts. Here, we should note that the acid-base reactions in aprotic solvents considerably differ from those in water, as discussed in Chapter 3. 

Stable indefinitely in polymer-bound catalysts under phase transfer conditions that require the presence of hydroxide ion at the ion exchange site. Benzyltrialkylammonium and phosphonium ions are much less stable in base than non-benzylic tetraalkylammonium and phosphonium ions. Industrial applications of polystyrene-supported onium ion catalysts under strongly basic conditions will require catalysts such as 7, 1 rather than the usual commercially available... 

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