In situ FTIR spectroscopy shows no evidence of reaction between MAO and TMA

In situ infrared spectra of TMA depleted commercial MAO with increasing additions of TMA have been recorded at 25°C in toluene solution. The spectra of the mixtures are sums of the spectra of TMA depleted MAO (CH3/Al ratio 1.5) and of TMA. There is no evidence of any reaction between these compounds; the basic MAO entity seems to be completely uninfluenced by additions of TMA at this temperature.