Tau Chuan Ling
University of Malaya, Malaysia
Title: Crystallization and catalytic behaviour of cesium-based zeolite nanocrystals prepared in organotemplate free hydrogel system
Biography
Biography: Tau Chuan Ling
Abstract
Zeolite is a widely used acidic catalyst in chemical reactions. However, large amount of strong acid sites of zeolite tend to over crack and produce coke, resulting in catalyst deactivation. Cs-zeolite has been proved to reduce coke formation and emerged as an excellent catalyst in base-catalyzed reaction for example, side-chain alkylation of toluene, cyanoethylation of alcohols, dehydrogenation of alcohols, deoxygenation of oxygenated-compounds, aldol condensation, O-alkylation of phenol, isomerization of alkenes, etc. Typically, Cs-zeolite is prepared by ion-exchanged with Cs+ ion or impregnated with Cesium oxide. Besides that, zeolites are typically synthesized with organic template which acts as structural directing agent (SDA). However, expensive price and associated environment issues with the combustion of templates are the major concern in the template-assisted synthesis of zeolites. Therefore, we aim to synthesize Cs-zeolite via hydrothermal method without addition of organic template and applied in Knoevenagel condensation.