Catalytic behavior of gallium-containing mesoporous silicas

The vapor phase tert-butylation of anisole with tert-butanol reaction has been inspected over a series of Ga-FSM-16 with different Si/Ga ratios = 75, 35, 5 synthesized by intercalating kanemite using cetyltrimethylammonium bromide (CTMABr) and gallium nitrate. The resulting samples were characterized by means of inductively coupled plasma (ICP) technique, BET, BJH, XRD and a temperature-programed-desorption (TPD) of pyridine. In addition, the influence of molar ratio, influence of temperature, weight hourly space velocity (WHSV) and time on stream on the selectivity of products was investigated and the results are discussed.