A recyclable ionic liquid-oxomolybdenum(VI) catalytic system for the oxidative desulfurization of model and real diesel fuel

被引：35
作者：
Juliao, Diana [1 ,2 ,3 ]
Gomes, Ana C. [3 ]
Pillinger, Martyn [3 ]
Valenca, Rita [4 ]
Ribeiro, Jorge C. [4 ]
Goncalves, Isabel S. [3 ]
Balula, Salete S. [1 ,2 ]
机构：
[1] Univ Porto, Fac Sci, REQUIMTE LAQV, P-4169007 Oporto, Portugal
[2] Univ Porto, Fac Sci, Dept Chem & Biochem, P-4169007 Oporto, Portugal
[3] Univ Aveiro, CICECO Aveiro Inst Mat, Dept Chem, Campus Univ Santiago, P-3810193 Aveiro, Portugal
[4] GalpEnergia, Refinaria Matosinhos, P-4452852 Leca Da Palmeira, Matosinhos, Portugal
来源：
DALTON TRANSACTIONS | 2016年 / 45卷 / 38期
关键词：
DEEP DESULFURIZATION; COMPLEXES; SULFUR; LIQUID; CYCLOOCTENE; EPOXIDATION; ACID; PERFORMANCE; EXTRACTION; H2O2;
D O I：
10.1039/c6dt02065h
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The oxidative desulfurization of model and real diesel has been studied using the complex [MoO2Cl2(4,4'-di-tert-butyl-2,2'-bipyridine)] as (pre)catalyst, aq. H2O2 as oxidant, and an ionic liquid as extraction solvent. Under moderate conditions (50 degrees C) and short reaction times (<3 h), dibenzothiophene, 4-methyldibenzothiophene and 4,6-dimethyldibenzothiophene could be completely removed from the model diesel. The (pre)catalyst 1 was transformed in situ to the active catalyst [MoO(O-2)(2)(di-tBu-bipy)]. By sequentially performing extractive desulfurization and ECODS steps, 76% sulfur removal was achieved for a real diesel (S-initial = 2300 ppm). For both the model and real diesels, the catalyst/IL phase could be easily recycled and reused with no loss of desulfurization efficiency.
引用
收藏
页码：15242 / 15248
页数：7
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