|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|6453502||1418799||2018||10 صفحه PDF||سفارش دهید||دانلود رایگان|
- Surfactant-type heteropolyacid supported in dual-function materials was synthesized.
- Catalytic behavior of samples for oxidation of DBT was investigated.
- Stability is mainly correlated with MOF-199 and MCM-41.
- The catalyst can be easily recovered and reused.
With the increasing aim of deep desulfurization of fuel, a kind of novel surfactant-type heteropolyacid [(CH3)2(CnH2nÂ +Â 1)N(CH2)]2[POM] (SRL-POM, nÂ =Â 10, 12, 14 and 16) was successfully synthesized and then it template self-construction of MOF-199 in the pore of MCM-41 (SRL-PMM). This catalyst was exploited to act as a stable heteropolyacid-based one, under the dual protection functions of MOF-199 and MCM-41. Structure was characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR), X-ray photoelectron spectroscopy (XPS), N2 adsorption-desorption, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and so on. Direct oxidation of dibenzothiophene (DBT) using O2 was performed by this surfactant-type heteropolyacid catalyst with 100% selectivity in the oxidation of DBT to sulfones under the optimal conditions and shown a better reusability. Furthermore, the kinetic studies reveal that the oxidative desulfurization can present a pseudo first-order kinetic process, and this work offers an alternative for oxidative desulfurization of real oil samples as well.
Journal: Applied Catalysis B: Environmental - Volume 221, February 2018, Pages 574-583