Oxidative desulfurization of commercial diesel catalyzed by tert-butyl hydroperoxide polymolybdate on alumina: optimization by Box-Behnken design

In this paper, the performance of oxidative desulfurization of commercial diesel by alumina-supported polymolybdate-based catalyst system was studied. The oxidizing reagent used was tert -butyl hydroperoxide. The catalyst was prepared using wet impregnation method and characterized by FESEM-EDX and...

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Bibliographic Details
Published in:Clean technologies and environmental policy 2015-02, Vol.17 (2), p.433-441
Main Authors: Wan Abdullah, Wan Nazwanie, Wan Abu Bakar, Wan Azelee, Ali, Rusmidah, Embong, Zaidi
Format: Article
Language:English
Subjects:
Alumina
Aluminum oxide
Calcination
Catalysis
Catalysts
Catalytic oxidation
Clean technology
Desulfurization
Desulfurizing
Diesel
Diesel fuels
Dopants
Earth and Environmental Science
Environment
Environmental Economics
Environmental Engineering/Biotechnology
Environmental policy
Independent variables
Industrial and Production Engineering
Industrial Chemistry/Chemical Engineering
Iron
Mathematical models
Molybdenum
Nitrates
Optimization
Original Paper
Outdoor air quality
Oxidation
Sulfur
Sulfur content
Sustainable Development
Variables
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Summary:In this paper, the performance of oxidative desulfurization of commercial diesel by alumina-supported polymolybdate-based catalyst system was studied. The oxidizing reagent used was tert -butyl hydroperoxide. The catalyst was prepared using wet impregnation method and characterized by FESEM-EDX and X-ray photoelectron spectroscopy. The effects of dopants, catalyst loading, dopant loading, and calcination temperature of the catalyst were investigated. Further investigations on doped molybdenum revealed that Fe–MoO 3 /Al 2 O 3 catalyst calcined at 500 °C with 10 % of Fe loading and 9 g/L, the catalyst was able to reduce the sulfur in commercial diesel from 440 to 88 ppmw. Response surface methodology involving Box-Behnken was employed to evaluate and optimize Fe–MoO 3 /Al 2 O 3 preparation parameters (calcinations temperature, catalyst loading, and Fe loading) and their optimum values were found to be 550 °C, 10 g/L and 10 % of calcination temperature, catalyst loading, and Fe loading.
ISSN:1618-954X
1618-9558
DOI:10.1007/s10098-014-0797-5