PROPRIETĂŢILE SORBŢIONALE ŞI CATALITICE ALE MONTMORILONITULUI INTERCALAT CU OLIGOMERI DE ALUMINIU

Vasile RUSU, Raisa NASTAS, Nina ŢÎMBALIUC, Alexandru GONŢA, Alexei MAFTULEAC Institutul de Chimie al AŞM

Abstract

SORPTION AND CATALYTIC PROPRIETIES OF AL-PILLARED MONTMORILLONITE The luminol chemiluminescence effect presents an effective procedure for comparative assessment of the catalytic activity of the catalysts. It was found that the most pronounced catalytic effect, having a chemiluminescence intensity about 18 times higher compared to the control sample, possess Al-pillared montmorillonite, obtained at initial molar ratio OH-/Al3+ 2:1, afterwards calcined at 450oC and transformed into H-form. This sample also possess better efficiency (94%) of oxidation of the methyl-orange in the presence of H2O2 and more enhanced Brönsted acidity. Keywords: montmorillonite, pillared adsorbents, methyl-orange, chemiluminescence.