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Title

EFFECT OF DIFFERENT SUBSTRATES AND LINKERS ATTACHED TO H4SIW12O40 AND STUDYING CATALYTIC ACTIVITY OF THEM ON THE SYNTHESIS OF α-AMIDOALKYL-β-NAPHTHOLS

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Abstract

 MANY INORGANIC COMPOUNDS HAVE BEEN EXPLORED AS SUBSTRATE FOR THE FORMATION OF HETEROGENEOUS CATALYSTS. THESE COMPOUNDS HAVE ADVANTAGES SUCH AS BEING DISPERSED UNIFORMLY ON THE SURFACE OF THE CATALYST BED, NON-ABSORBENT OF WATER, MECHANICAL STABILITY, AND INSOLUBILITY IN ORGANIC SOLVENTS AS WELL AS BEING RESISTANT TO HEAT. IN THIS STUDY, A VARIETY OF SUBSTRATES SUCH AS MCM-41, MCM-48, SBA-15 WERE EXAMINED AND MCM-41 WITH BETTER PERFORMANCE WAS SELECTED AS SUPPORTING MATERIAL. EFFECTS OF THE TWO ORGANIC LINKERS, TPI AND (ETO)3SI(CH2)3NH2 (NAMED RNH2), WERE INVESTIGATED ON THE CATALYTIC EFFICIENCY OF THE HETEROGENIZED KEGGIN TYPE HETEROPOLY ACID H4SIW12O40. OBVIOUSLY, KIND OF THE SOLID SUPPORTING MATERIAL AND IDENTITY OF THE ORGANIC MODIFIER STRONGLY AFFECTED EFFICIENCY OF THE FABRICATED CATALYST. AMONGST H5PW10V2O40/TPIMCM41 AND H5PW10V2O40/RNH2-MCM41, THE FIRST BEHAVED MORE EFFICIENT. DESIGN AND PREPARATION OF MULTIFUNCTIONAL MATERIALS BEARING DIFFERENT TYPES OF ACTIVE SITES HAVE ATTRACTED MORE AND MORE ATTENTIONS OF CHEMICAL ENGINEERS. N-[3-(TRIETHOXYSILYL)PROPYL]ISONICOTINAMIDE (TPI) LINKER IS A SUITABLE AGENT FOR THE IMMOBILIZATION PROCESS AND PROVIDED COVALENT ANCHORING OF THE HETEROPOLYACID ONTO THE FUNCTIONALIZED SUPPORTING MATERIAL.

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