Efficient Oxidative Desulfurization Processes Using Polyoxomolybdate Based Catalysts

authors	Granadeiro, CM; Ferreira, PMC; Juliao, D; Ribeiro, LA; Valenca, R; Ribeiro, JC; Goncalves, IS; de Castro, B; Pillinger, M; Cunha-Silva, L; Balula, SS
nationality	International
journal	ENERGIES
author keywords	real diesel; ionic liquid; oxidative desulfurization; benzothiophene derivatives; hydrogen peroxide
keywords	POST-SYNTHETIC MODIFICATION; DEEP DESULFURIZATION; IONIC LIQUIDS; MODEL DIESEL; POLYOXOMETALATE; DIBENZOTHIOPHENE; SYSTEM; TEMPERATURE; MIL-101(CR); EXTRACTION
abstract	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.
publisher	MDPI
issn	1996-1073
year published	2018
volume	11
issue	7
digital object identifier (doi)	10.3390/en11071696
web of science category	Energy & Fuels
subject category	Energy & Fuels
unique article identifier	WOS:000441830500080