应用化学2017，Vol.34Issue(11)：1301-1306,6.DOI:10.11944/j.issn.1000-0518.2017.11.170011
Keggin结构多阴阳离子构筑高活性多酸基氧化脱硫催化剂
Preparation of High Activity Oxidative Desulfurization Catalyst with Polycation and Heteropolyanion Keggin Structure
摘要
Abstract
Design and development of high activity ultra-deep oxidation of desulfurization catalyst is one of the most important ways to meet the increasing stringent requirements of petrochemical industry for cleaning fuel standards in the future. Catalysts with Keggin structure aluminum hydroxide polyoxocations(Al13 ),Al13-SDS and HPW-Al13-SDS(HPW=Keggin structure phosphotungstic acid,SDS=sodium dodecylsulfate)were pre-pared. The structures of these catalysts were characterized by Fourier transform infrared spectroscopy(FT-IR), X-ray diffraction (XRD ),ultraviolet visible spectroscopy (UV-Vis ),Brunauer-Emmett-Teller (BET ) and thermogravimetry(TG). The preservation of the Keggin structure on HPW-Al13-SDS catalyst was confirmed by IR and UV-Vis spectra. Catalytic oxidation desulfurization(ODS)reaction over HPW-Al13-SDS with a model of oil(n-hexan solution of organic sulfur)was studied. In optimized condition,up to 99. 5% conversion of sulfur was achieved. The efficiencies of ODS decrease from dibenzothiophene to benzothiophene. IR and XRD characterizations of HPW-Al13-SDS catalyst after the reaction show that the catalysts form peroxo-tungsten complexes. The catalytic activity of the recycled HPW-Al13-SDS is almost the same as freshly prepared,and can be recycled via easy separation. The catalyst used herein is an ideal model for ODS of organic sulfide.关键词
磷钨酸/多聚铝阳离子/氧化脱硫/有机硫化物/过氧化氢Key words
phosphotungstic acid/aluminum hydroxide polyoxocations/oxidative desulfurization/organic sulfide/hydrogen peroxide分类
化学化工引用本文复制引用
陈立东,陈永英,姜春杰,佟欢,王旭阳,宋鹏月,刘迪,姬艳晴,岳倩,丁威,贾意欣..Keggin结构多阴阳离子构筑高活性多酸基氧化脱硫催化剂[J].应用化学,2017,34(11):1301-1306,6.基金项目
辽宁省博士科研启动基金项目(20131060) Supported by the Research Fund for the Doctoral Program of Liaoning Province of China(No. 20131060) （20131060）
