Co(II) porphyrins have been utilized as efficient and selective catalysts for the extractive oxidative desulfurization reaction on the refractory dibenzothiophene (DBT) in n-dodecane (model middle distillate fuel oil). The acetonitrile was taken as extracting polar solvent and H₂O₂ was used as oxidant. The reaction optimization was done with respect to DBT:catalyst molar ratio; DBT:H₂O₂ molar ratio; extracting solvent: CH₃CN/n-dodecane volume ratio; reaction temperature and time. Under the optimized conditions, a maximum of ∼98% DBT removal was achieved by using the meso-tetrakis(4′ methoxyphenyl)porphyrinatocobalt(II) as catalyst under mild conditions at 50∘C.

中文翻译：

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温和条件下燃料油中二苯并噻吩萃取氧化脱硫的高效 Co(II) 卟啉催化剂

Co(II) 卟啉已被用作高效和选择性催化剂，用于难熔二苯并噻吩 (DBT) 的萃取氧化脱硫反应。n-十二烷（模型中间馏分燃料油）。以乙腈为萃取极性溶剂，以H ₂ O ₂为氧化剂。针对 DBT:催化剂摩尔比进行了反应优化；DBT:H ₂ O ₂摩尔比；萃取溶剂：CH ₃ CN/n-十二烷体积比；反应温度和时间。在优化条件下，最大 ～通过使用 meso-tetrakis(4'甲氧基苯基）卟啉钴（II）作为催化剂在温和条件下在 50∘C。