Premium
Synthesis of Organic−Inorganic Hybrid Nanocomposite Polyoxometalate/Metal Oxide/CS Polymer (PMnW 11 @TiO 2 @CS): Nanocatalyst for Oxidative Desulfurization of Real Fuel
Author(s) -
Rezvani Mohammad Ali,
Fereyduni Mohsen
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201902654
Subject(s) - dibenzothiophene , polyoxometalate , flue gas desulfurization , nanocomposite , catalysis , materials science , hybrid material , scanning electron microscope , nuclear chemistry , titanium dioxide , polymer , infrared spectroscopy , inorganic chemistry , oxide , chemical engineering , chemistry , organic chemistry , nanotechnology , metallurgy , composite material , engineering
A new type of organic‐inorganic hybrid nanocatalyst was synthesized by composition of Mn(II)‐substituted Keggin‐type polyoxometalate (PMnW 11 ), titanium dioxide (TiO 2) and chitosan polymer (CS) via sol‐gel method. The synthesized nanocomposite (PMnW 11 @TiO 2 @CS) was characterized by fouriour transform infrared spectroscopy (FT‐IR), X‐ray diffraction analysis (XRD), energy dispersive X‐ray analysis (EDAX) and scanning electron microscopy (SEM) techniques. PMnW 11 @TiO 2 @CS was used as a new hybrid nanocatalyst for catalytic oxidative desulfurization (CODS) of real and model fuel in the presence of CH 3 COOH/H 2 O 2 in the volume ratio of 1/2 as oxidant system at 35 °C after 60 min. On the basis of the suggested CODS system, mercaptan and sulfur content of real fuel could be removed lowered with 97%. The CODS of dibenzothiophene molecules, which are difficult to remove, could be reached to 98%. The main factors affecting on the CODS efficiency were investigated in detail. The PMnW 11 @TiO 2 @CS was demonstrated an excellent recyclability performance in the CODS reactions for five times without noticeable decrease in catalytic activity.