Role of Mn/Al2O3 catalyst in deep oxidative desulfurization of diesel

In this work, a series of supported manganese catalyst has been synthesized and utilized in oxidative desulfurization to remove 4,6-dimethyldibenzothiophene (4,6-DMDBT), dibenzothiophene (DBT) and thiophene. The influences of catalyst parameters were investigated including manganese precursors, mang...

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Published in:Petroleum science and technology 2018-11, Vol.36 (21), p.1741
Main Authors: Nur Aini Wan Mokhtar, Wan, Azelee Wan Abu Bakar, Wan, Nazwanie Wan Abdullah, Wan, Toeman, Susilawati, Jamal Mat Rosid, Salmiah
Format: Article
Language:English
Subjects:
Aluminum oxide
Catalysis
Catalysts
Chemical synthesis
Desulfurizing
Dibenzothiophene
Manganese
Roasting
Scanning electron microscopy
X-ray diffraction
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container_issue 21
container_start_page 1741
container_title Petroleum science and technology
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creator Nur Aini Wan Mokhtar, Wan
Azelee Wan Abu Bakar, Wan
Nazwanie Wan Abdullah, Wan
Toeman, Susilawati
Jamal Mat Rosid, Salmiah
description In this work, a series of supported manganese catalyst has been synthesized and utilized in oxidative desulfurization to remove 4,6-dimethyldibenzothiophene (4,6-DMDBT), dibenzothiophene (DBT) and thiophene. The influences of catalyst parameters were investigated including manganese precursors, manganese loading and calcination temperature in details. The synthesized catalyst was characterized by scanning electron microscopy (SEM), N2 adsorption/desorption and X-ray diffraction (XRD) techniques. 90.2% of 4,6-DMDBT, 98.5% of DBT and 95.5% of thiophene conversion were achieved under mild operational conditions using 3Mn(NO3)2/Al2O3 at 500 °C calcination temperature. A slight decrease in desulfurization activity was observed after Mn/Al2O3 catalyst being used in five cycles ODS.
doi_str_mv 10.1080/10916466.2018.1511581
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subjects Aluminum oxide
Catalysis
Catalysts
Chemical synthesis
Desulfurizing
Dibenzothiophene
Manganese
Roasting
Scanning electron microscopy
X-ray diffraction
title Role of Mn/Al2O3 catalyst in deep oxidative desulfurization of diesel
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