Deep oxidative desulfurization of fuels catalyzed by magnetic Fenton-like hybrid catalysts in ionic liquids
作者:Wei Jiang、Wenshuai Zhu、Huaming Li、Jun xiong、Suhang Xun、Zhen Zhao、Qian Wang
DOI:10.1039/c2ra22227b
日期:——
Three magnetic Fenton-like hybrid materials Q[FeCl4] [Q = (CH3)4N, C14H29N(CH3)3, and C18H37N(CH3)3] were synthesized and characterized, which were used as catalysts in oxidative desulfurization combining ionic liquids (ILs) extraction and H2O2 oxidation. The reaction conditions were optimized by investigating reaction temperature, time, the type of ILs, the amount of H2O2 and catalysts in detail. The removal of dibenzothiophene (DBT) in model oil could get up to 97.0% at 30 °C for 1 h. In addition, the utilization rate of H2O2 could be improved by adding it in batches. The catalytic system, consisting of IL and catalysts, could be easily separated by applying an external magnetic field and regeneration by washing with water, which could be recycled six times with a slight decrease in desulfurization efficiencies.
合成并表征了三种磁性芬顿类杂化材料 Q[FeCl4] [Q = (CH3)4N、C14H29N(CH3)3 和 C18H37N(CH3)3],并将其用作离子液体(ILs)萃取和 H2O2 氧化相结合的氧化脱硫催化剂。通过详细研究反应温度、时间、离子液体类型、H2O2 量和催化剂,对反应条件进行了优化。在 30 °C 下反应 1 小时,模型油中二苯并噻吩(DBT)的去除率可达 97.0%。由 IL 和催化剂组成的催化系统可通过外加磁场轻松分离,并通过水洗再生,该系统可循环使用六次,但脱硫效率略有下降。