Ultrasound-assisted oxidative desulfurization process of liquid fuel by phosphotungstic acid encapsulated in a interpenetrating amine-functionalized Zn(II)-based MOF as catalyst

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• 作者：Ahmad Afzalinia^a ; ^{afzaliniaahmad1991@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Abbas Mirzaie^b ; Ahmad Nikseresht^c ; Tahereh Musabeygi^a
• 关键词：Oxidative desulfurization ; MOFs ; Encapsulation ; Phosphotungstic acid ; Ultrasound waves ; Fuel
• 刊名：Ultrasonics Sonochemistry
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：34
• 期：Complete
• 页码：713-720
• 全文大小：1795 K

文摘

In this work, ultrasound-assisted oxidative desulfurization (UAOD) of liquid fuels performed with a novel heterogeneous highly dispersed Keggin-type phosphotungstic acid (H₃PW₁₂O₄₀, PTA) catalyst that encapsulated into an amino-functionalized MOF (TMU-17-NH₂). The prepared composite exhibits high catalytic activity and reusability in oxidative desulfurization of model fuel. Ultrasound-assisted oxidative desulfurization (UAOD) is a new way to performed oxidation reaction of sulfur-contain compounds rapidly, economically, environment-friendly and safely, under mild conditions. Ultrasound waves can be apply as an efficient tool to decrease the reaction time and improves oxidative desulfurization system performance. PTA@TMU-17-NH₂ could be completely performed desulfurization of the model oil by 20 mg of catalyst, O/S molar ratio of 1:1 in presence of MeCN as extraction solvent. The obtained results indicated that the conversions of DBT to DBTO₂ achieve 98% after 15 min in ambient temperature. In this work, we prepared TMU-17-NH₂ and PTA/TMU-17-NH₂ composite by ultrasound irradiation for first time and employed in UAOD process. Prepared catalyst exhibit an excellent reusability without PTA leaching and loss of activity.