Direct synthesis of mesoporous SRL-POM@MOF-199@MCM-41 and its highly catalytic performance for the oxidesulfurization of DBT

[Display omitted] •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 ai...

Full description

Saved in:
Bibliographic Details
Published in:Applied catalysis. B, Environmental Environmental, 2018-02, Vol.221, p.574-583
Main Authors: Li, Si-Wen, Yang, Zhi, Gao, Rui-Min, Zhang, Gai, Zhao, Jian-she
Format: Article
Language:English
Subjects:
Catalysis
Catalysts
Chemical synthesis
Desulfurization
Desulfurizing
Dibenzothiophene
Electron microscopy
Fourier transforms
Fuels
Infrared spectroscopy
MCM-41 molecular sieve
Metal-organic framework
Microscopy
Oxidation
Oxidative desulfurization
Photoelectron spectroscopy
Reusability
Scanning electron microscopy
Selectivity
Sulfones
Surfactant-type heteropolyacid
Transmission electron microscopy
X ray photoelectron spectroscopy
X-ray diffraction
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:[Display omitted] •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(CnH2n+1)N(CH2)]2[POM] (SRL-POM, n=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.
ISSN:0926-3373
1873-3883
DOI:10.1016/j.apcatb.2017.09.044