An Unusual Suppression of Trimethylamine Formation in the High Temperature Alkylation of Ammonia with Methanol over (NH4)3PW12O40

Article abstract of DOI:10.1246/cl.1993.209

A synthesis of methylamines from ammonia and methanol was studied by using mainly the title heteropoly catalyst.Although at low temperatures below ca. 750 K the three methylamines (MMA, DMA, and TMA) were formed as usual, at higher temperatures the formation of TMA was completely suppressed.This unusual product selectivity was explained by the strong adsorption of TMA to the catalyst.