abstract
High efficiency was found for desulfurization and denitrogenation processes to treat diesel using either the hybrid material {[MoO3(2,2 '-bipy)][MoO3(H2O)]}(n)or the octanuclear complex [Mo8O22(OH)(4)(di-tBu-bipy)(4)] (2,2 '-bipy = 2,2 '-bipyridine, di-tBu-bipy = 4,4 '-di-tert-butyl-2,2 '-bipyridine) as catalysts. These processes were employed in a single procedure to simultaneously remove sulfur (dibenzothiophene, 4-methyldibenzothiophene, and 4,6-dimethyldibenzothiophene) and nitrogen (indole and quinoline) compounds from diesel. A reaction time of two hours was sufficient to achieve at least 99.9 % S removal and 97 % N removal. Furthermore, the catalytic systems presented a high capacity to be reused/recycled for consecutive desulfurization/denitrogenation cycles.
keywords
ULTRA-DEEP DESULFURIZATION; OXIDATIVE DESULFURIZATION; NITROGEN-COMPOUNDS; IONIC LIQUID; STRUCTURAL ELUCIDATION; GAS OIL; HETEROGENEOUS CATALYST; EPOXIDATION; EXTRACTION; REMOVAL
subject category
Engineering
authors
Juliao, D; Gomes, AC; Pillinger, M; Goncalves, IS; Balula, SS
our authors
Ana Catarina Costa Gomes Alves
Assistant Researcher
Diana Julião
PhD Student
Isabel Maria de Sousa Gonçalves
Associate Professoracknowledgements
The authors acknowledge funding provided within the projects REQUIMTE-LAQV (UID/QUI/50006/2019) and CICECO-Aveiro Institute of Materials (UIDB/50011/2020, UIDP/50011/2020), financed by national funds (OE) through the FCT (Fundacao para a Ciencia e a Tecnologia)/MCTES (Ministerio da Ciencia, Tecnologia e Ensino Superior). The FCT and the European Union are acknowledged for a personal grant to D. Juliao (SFRH/BD/102783/2014), co-funded by MCTES and the European Social Fund through the program POPH of QREN.