CHANGE IN THE DECOMPOSITION MODE OF 1-PROPANAMINE DUE TO THE PRESENCEOF CATIONS IN MFI ZEOLITE

The adsorption and thermal analysis of 1-propanamine has been compared over MFI zeolites which contain H, Ga, and In cations. In the case of H+-containing materials, NH3 and propene are simultaneously desorbed above 600 K. This behavior, is well known and characteristic of the Ho fmann elimination reaction. However, a distinctly different mode of re action is observed in the case of Ga and In containing materials. NH3 is released below 600 K, propene and other products are released above 600 K, and a stable residue remains above 800 K. It is suggested that such behavior results from Lewis acid interactions of Ga or In cation s with propanamine.