Artigo Acesso aberto Revisado por pares

Efficient Oxidative Desulfurization Processes Using Polyoxomolybdate Based Catalysts

2018; Multidisciplinary Digital Publishing Institute; Volume: 11; Issue: 7 Linguagem: Inglês

10.3390/en11071696

ISSN

1996-1073

Autores

Carlos M. Granadeiro, P. Ferreira, Diana Julião, L. Ribeiro, Rita Valença, Jorge C. Ribeiro, Isabel S. Gonçalves, Baltazar de Castro, Martyn Pillinger, Luís Cunha‐Silva, Salete S. Balula,

Tópico(s)

Metal-Organic Frameworks: Synthesis and Applications

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 H3[PMo12O40] (PMo12) was strategically increased by simple cation exchange, using a long carbon chain (ODAPMo12, ODA = CH3(CH2)17(CH3)3N), 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.

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