A new green system of HPW@MOFs catalyzed desulfurization using O2 as oxidant

A series of crystalline compounds were obtained from simple one-step hydrothermal reaction of copper nitrate, benzentricaboxylate and different Keggin polyoxometalates. Phosphotungstic acid immobilized in host matrix was selected for the first time as a recyclable and efficient catalyst in oxidative desulfurization process, under eco-sustainable conditions supported by the green oxidant O2 and the green extracting agent distilled water. The efficiency of desulfurization with air was studied and it is possible to use air as green oxidant in desulfurization. Moreover, the catalyst is effective for the desulfurization of real diesel.

Phosphotungstic acid incorporated metal–organic frameworks (HPW@MOFs) have been screened as the most effective and recyclable oxidative desulfurization catalyst with a favourable DBT conversion of 90% when using O2 as oxidant. Moreover, it is practically feasible and really more economical to use air as oxidant in desulfurization.Figure optionsDownload as PowerPoint slide