Synthesis and characterization of a novel microporous titanosilicate with a structure of penkvilksite-1M

Abstract

A novel titanosilicate which is a structural analogue of the mineral penkvilksite-1M has been synthesized in a SiO 2–TiO 2–Na 2O–H 2O–(TMA) 2O system. It is found that the penkvilksite-1M samples require a relatively low alkalinity and appropriate titanium content. The penkvilksite-1M samples were characterized by X-ray diffraction, 29 Si magic-angle spinning NMR, scanning electron microscopy, IR spectroscopy, differential thermal–thermogravimetric analysis, ion-exchange and adsorption measurements.