EVALUAREA PROPRIETĂŢILOR DE SUPRAFAŢĂ ALE BENTONITULUI LĂRGUŢA (REPUBLICA MOLDOVA) INTERCALAT CU OLIGOMERI DE ALUMINIU

Vasile RUSU, Alexei MAFTULEAC, Oleg PETUHOV, Veaceslav KULCIŢKI, Marina GRINCO, Larisa POSTOLACHI, Maria RUSU Institutul de Chimie al AŞM

Abstract

SURFACE PROPERTIES OF PILLARED BENTONITE LARGUTA (R. MOLDOVA) PILLARED WITH ALUMINUM OLIGOMERIC SPECIES

Larguta bentonite prior treatment with dilute acid (pH 2) further being pillared with aluminum oligomeric species, result in modification of the surface properties of the adsorbents - acidity, sorption-structural characteristics and thermal stability. The kinetics of the conversion of oleic acid to esterification with ethylic alcohol is influenced by the nature of the acid catalysts used. Pillared adsorbents obtained on the basis of bentonite Larguta (RM) possess real prospects for obtaining bio-fuel from vegetable oils. Keywords: bentonite Largutza, pillared adsorbents, sorptional-structural characteristics.