INFLUENCE OF THE SYNTHESIS PARAMETERS ON SOME TEXTURAL PROPERTIES OF ROMANIAN ACID ACTIVATED BENTONITE
URSU ALINA VIOLETA(1*), JINESCU GHEORGHITA2, NISTOR ILEANA DENISA(1), GEORGESCU ANA MARIA(1), MUNTIANU (GHIMICIU) GABRIELA(1), SILION MIHAELA(3)
(1)UNIVERSITY „VASILE ALECSANDRI” OF BACĂU, 157 CALEA MARASESTI, RO-600115, BACĂU,
ROMANIA
(2)UNIVERSITY “POLITEHNICA” OF BUCAREST, 313 SPLAIUL INDEPENDENTEI, RO-060042, BUCHAREST, ROMANIA
(3)INSTIUTUTE OF MACROMOLECULAR CHEMISTRY “PETRU PONI
Abstract
This paper presents the influence of synthesis parameters (concentration of acid solution and the solid: liquid ratio) on textural characteristics of bentonite activated clays: nitrogen adsorption/desorption isotherms, surface and pore size distribution. Acid activated clays present higher specific surface area than the natural bentonite used as feed stock and a better adsorption capacity.