Immobilizaion of Preyssler type heteropoly acids on siliceous mesporous supports and their catalytic activities in the dehydration of ethanol

Porous materials with different pore structure were synthesized and modified with Preyssler-type heteropolyacid material by post-synthetic wet-impregnation method. The functionalized materials were thoroughly characterized by different physic-chemical techniques. As reveled by characterization, the structures were well preserved after the modification. All the materials were catalytically active as proved by the catalytic results in dehydration of alcohol to ethylene. On comparison with Preyssler (without any support), which did not show activity at all, mesoporous matrices provided active support for hosting heteropolyacids which was found to be an excellent catalyst for this reaction.