Pore structure and surface acidity evaluation of Fe-PILCs

Authors : Suna BALCI, Elif GÖKÇAY

Pages : 843-856

View : 15 | Download : 5

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Fe-PILCs via different conditions using smectites from Hancili insert ignore into journalissuearticles values(Turkey); and Wyoming insert ignore into journalissuearticles values(USA); were synthesised. Presaturation had little effects on the basal spacing values while it had important effects on thermal stabilities of the products. Products having basal spacing insert ignore into journalissuearticles values(d001); around 1.30 nm and surface area up to 160 m2 g-1 were obtained. The thermal behaviour, X-ray diffraction insert ignore into journalissuearticles values(XRD); patterns, and nitrogen adsorption/desorption experiments confirmed that thermally stable and micro-mesoporous products were obtained although at elevated calcination temperature. Delaminated sample with basal spacing value of 2.79 nm was obtained. Surface acidity of clay was enhanced by pillaring. Chemically sorbed pyridine Fourier transform infrared spectroscopy insert ignore into journalissuearticles values(FTIR); bands were preserved at elevated desorption temperatures.
Keywords : Pillared clays, delaminated clays, characterisation, surface area, surface acidity