Catalytic Oxidative Desulfurization of Model Oil Fuels by Novel Bifunctional Molecular Sieve NbFeAPSO-5
Keywords:
Bifunctional molecular sieve, Oxidative desulfurization, Model diesel oil, DibenzothiopheneAbstract
In this work, novel bifunctional NbFeAPSO-5 molecular sieve was synthesised and used in oxidative desulfurization of model oil with hydrogen peroxide (H2O2, 25 wt%) as an oxidant. It was observed that ICP-EAS analysis confirmed the incorporation of silicon (12.9%), aluminium (15.4%), phosphorous (21.9%), iron (5.62%) and niobium (0.39%) into AlPO-5 framework. Furthermore, the NbFeAPSO-5 can be reused for at least six cycles without noticeable changes in desulfurization performance, thus revealing its good reusability. Used in the catalytic oxidative desulfurization of model diesel oil, the sulfur content can be reduced from 559.7 ppm to 4.8 ppm with 99.2% sulfur removal via a one-step process under mild conditions.
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