Membrane-Supported Layered Coordination Polymer as an Advanced Sustainable Catalyst for Desulfurization

The application of a catalytic membrane in the oxidative desulfurization of a multicomponent model diesel formed by most refractory sulfur compounds present in fuel is reported here for the first time. The catalytic membrane was prepared by the impregnation of the active lamellar [Gd(H nmp)(H O) ]Cl...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2021-04, Vol.26 (9), p.2404
Main Authors: Mirante, Fátima, Mendes, Ricardo F, Faria, Rui G, Cunha-Silva, Luís, Paz, Filipe A Almeida, Balula, Salete S
Format: Article
Language:English
Subjects:
Alternative energy
Catalysts
catalytic membrane
Coordination polymers
Desulfurization
Desulfurizing
Diesel
Diesel fuels
Drying
Efficiency
Hydrogen peroxide
Industrial applications
Ionic liquids
lanthanides
layered coordination polymer
Membrane processes
Membranes
Optimization
Oxidants
oxidative desulfurization
Oxidizing agents
Polymers
Polymethyl methacrylate
Solvents
Sulfur
Sulfur compounds
Sulfur content
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Summary:The application of a catalytic membrane in the oxidative desulfurization of a multicomponent model diesel formed by most refractory sulfur compounds present in fuel is reported here for the first time. The catalytic membrane was prepared by the impregnation of the active lamellar [Gd(H nmp)(H O) ]Cl·2H O (UAV-59) coordination polymer (CP) into a polymethyl methacrylate (PMMA, acrylic glass) supporting membrane. The use of the catalytic membrane in the liquid-liquid system instead of a powder catalyst arises as an enormous advantage associated with the facility of catalyst handling while avoiding catalyst mass loss. The optimization of various parameters allowed to achieve a near complete desulfurization after 3 h under sustainable conditions, i.e., using an aqueous H O as oxidant and an ionic liquid as extraction solvent ([BMIM]PF , 1:0.5 ratio diesel:[BMIM]PF ). The performance of the catalytic membrane and of the powdered UAV-59 catalyst was comparable, with the advantage that the former could be recycled successfully for a higher number of desulfurization cycles without the need of washing and drying procedures between reaction cycles, turning the catalytic membrane process more cost-efficient and suitable for future industrial application.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules26092404