Synthesis modulation as a useful tool to improve oxidation desulfurization inPOM@UiO-۶۶ nanocomposite

Sulfur-containing compounds in petroleum products cause environmental pollution.Therefor, environmental concerns make restrictions to the sulfur content of fuels more and moreexigent. Among the desulfurization processes, the oxidative desulfurization (ODS) technologyhas become as one of the most propitious techniques for obtaining fuel oil [۱]. Porous metalorganicframeworks (MOFs) are a new porous crystalline materials have attracted significantattention as efficient catalysts ODS [۲,۳]. Defect engineering is as an advantageous synthetictool for the introduction of structural point defects into MOFs to tune the physical-chemicalproperties and to modify their structure in oder to superior catalytic properties [۴,۵]. In thisstudy, POM@UiO-۶۶ nanoparticles were synthesized by encapsulation of polyoxometalate(POM) particles into a modulated-UiO-۶۶ as catalyst. For this purpose, a monocarboxylic acidwas used as the modulating agent to promote defect formation in UiO-۶۶ and then was employedto investigatec atalytic activity. The experimental results showed that the novel POM@UiO-۶۶nanocomposite exhibits excellent efficiency for oxidative desulfurization in comparison withneat UiO-۶۶ and some typical catalysts

Keywords:

Metal-Organic Frameworks , Polyoxometalate , Defect , Desulfurization