Petroleum Science >2022,??lssue 2:??- DOI: https://doi.org/10.1016/j.petsci.2021.10.029
Ce2(MoO4)3 as an efficient catalyst for aerobic oxidative desulfurization of fuels Open?Access
文章信息
作者：Xiao-Yi Liu, Xiu-Ping Li, Rong-Xiang Zhao,
作者单位：
投稿时间：
引用方式：Xiao-Yi Liu, Xiu-Ping Li, Rong-Xiang Zhao, Ce2(MoO4)3 as an efficient catalyst for aerobic oxidative desulfurization of fuels, Petroleum Science, Volume 19, Issue 2, 2022, Pages 861-869,
文章摘要
Abstract
Ce2(MoO4)3 was synthesized by a simple reflux method using cerium nitrate hexahydrate and ammonium molybdate as reactants. The as-prepared Ce2(MoO4)3 was characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), Scanning electron microscope (SEM), and X-ray photoelectron spectroscopy (XPS). The removal of dibenzothiophene (DBT) in model oil was studied using Ce2(MoO4)3 as catalyst and oxygen as oxidant. The reaction factors such as reaction temperature, amount of catalyst, and sulfide type on sulfur removal were researched. The results prove that both Ce3+ and MoO42- play significant role in the conversion from DBT to DBTO2. The Ce2(MoO4)3 catalyst has an excellent performance for the sulfur removal of DBT. Under the optimum reaction conditions, sulfur removal of 99.6% was obtained. After recycling five times, no significant loss in catalyst activity of Ce2(MoO4)3. Mechanism of aerobic oxidative desulfurization was proposed based on the experiment of free radical capture and infrared characterization.
Ce2(MoO4)3 was synthesized by a simple reflux method using cerium nitrate hexahydrate and ammonium molybdate as reactants. The as-prepared Ce2(MoO4)3 was characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), Scanning electron microscope (SEM), and X-ray photoelectron spectroscopy (XPS). The removal of dibenzothiophene (DBT) in model oil was studied using Ce2(MoO4)3 as catalyst and oxygen as oxidant. The reaction factors such as reaction temperature, amount of catalyst, and sulfide type on sulfur removal were researched. The results prove that both Ce3+ and MoO42- play significant role in the conversion from DBT to DBTO2. The Ce2(MoO4)3 catalyst has an excellent performance for the sulfur removal of DBT. Under the optimum reaction conditions, sulfur removal of 99.6% was obtained. After recycling five times, no significant loss in catalyst activity of Ce2(MoO4)3. Mechanism of aerobic oxidative desulfurization was proposed based on the experiment of free radical capture and infrared characterization.
关键词
-
Ce2(MoO4)3; Aerobic oxidative desulfurization; Dibenzothiophene; Reflux; Renewability