resumo
This work proposes an efficient desulfurization system to produce low sulfur diesel under sustainable and moderate experimental conditions. Treatment of a real diesel with a sulfur content of 2300 ppm led to 80% desulfurization after 2 h. The processes used conciliate liquid-liquid extraction and sulfur oxidative catalysis. The catalytic performance of the commercial Keggin-polyoxomolybdate H-3[PMo12O40] (PMo12) was strategically increased by simple cation exchange, using a long carbon chain (ODAPMo(12), ODA = CH3(CH2)(17)(CH3)(3)N), and by its incorporation into the Metal-Organic Framework (MOF) NH2-MIL-101(Cr), forming a new active heterogeneous PMo12@MOF composite catalyst. Activity of both catalysts was similar; however, the solid catalyst could be easily recovered and reused, and its stability was confirmed after multiple continuous cycles.
palavras-chave
POST-SYNTHETIC MODIFICATION; DEEP DESULFURIZATION; IONIC LIQUIDS; MODEL DIESEL; POLYOXOMETALATE; DIBENZOTHIOPHENE; SYSTEM; TEMPERATURE; MIL-101(CR); EXTRACTION
categoria
Energy & Fuels
autores
Granadeiro, CM; Ferreira, PMC; Juliao, D; Ribeiro, LA; Valenca, R; Ribeiro, JC; Goncalves, IS; de Castro, B; Pillinger, M; Cunha-Silva, L; Balula, SS
nossos autores
Carlos Miguel Cardeal Enes Granadeiro
Bolseiro de pós-Doutoramento
Diana Julião
Estudante de doutoramento
Isabel Maria de Sousa Gonçalves
Professor associado
Martyn Pillinger
Investigador Principalagradecimentos
This work was partly funded through the projects REQUIMTE-LAQV, POCI-01-0145-FEDER-007265 [FCT (Fundacao para a Ciencia e a Tecnologia) Ref. = UID/QUI/50006/2013] and CICECO-Aveiro Institute of Materials, POCI-01-0145-FEDER-007679 (FCT Ref. UID/CTM/50011/2013), financed by national funds through the FCT/MEC and when appropriate co-financed by FEDER (Fundo Europeu de Desenvolvimento Regional) under the PT2020 Partnership Agreement.