以磁性还原氧化石墨烯负载二氧化锰为催化剂对石油馏分进行氧化脱硫

Oxidative Desulfurization of Petroleum Distillate Fractions Using Manganese Dioxide Supported on Magnetic Reduced Graphene Oxide as Catalyst.

作者信息

Ahmad Waqas, Ur Rahman Atiq, Ahmad Imtiaz, Yaseen Muhammad, Mohamed Jan Badrul, Stylianakis Minas M, Kenanakis George, Ikram Rabia

机构信息

Institute of Chemical Sciences, University of Peshawar, Khyber Pukhtunkhwa 25120, Pakistan.

Department of Chemical Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia.

出版信息

Nanomaterials (Basel). 2021 Jan 14;11(1):203. doi: 10.3390/nano11010203.

DOI:10.3390/nano11010203

PMID:33466855

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7830498/

Abstract

In this study, oxidative desulfurization (ODS) of modeled and real oil samples was investigated using manganese-dioxide-supported, magnetic-reduced graphene oxide nanocomposite (MnO/MrGO) as a catalyst in the presence of an HO/HCOOH oxidation system. MnO/MrGO composite was synthesized and characterized by scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDX), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD) analyses. The optimal conditions for maximum removal of dibenzothiophene (DBT) from modeled oil samples were found to be efficient at 40 °C temperature, 60 min reaction time, 0.08 g catalyst dose/10 mL, and 2 mL of HO/formic acid, under which MnO/MrGO exhibited intense desulfurization activity of up to 80%. Under the same set of conditions, the removal of only 41% DBT was observed in the presence of graphene oxide (GO) as the catalyst, which clearly indicated the advantage of MrGO in the composite catalyst. Under optimized conditions, sulfur removal in real oil samples, including diesel oil, gasoline, and kerosene, was found to be 67.8%, 59.5%, and 51.9%, respectively. The present approach is credited to cost-effectiveness, environmental benignity, and ease of preparation, envisioning great prospects for desulfurization of fuel oils on a commercial level.

摘要

在本研究中，以二氧化锰负载的磁性还原氧化石墨烯纳米复合材料（MnO/MrGO）为催化剂，在HO/HCOOH氧化体系存在下，对模拟油样和实际油样进行了氧化脱硫（ODS）研究。通过扫描电子显微镜（SEM）、能量色散X射线光谱（EDX）、傅里叶变换红外光谱（FTIR）和X射线衍射（XRD）分析对MnO/MrGO复合材料进行了合成与表征。发现从模拟油样中最大程度去除二苯并噻吩（DBT）的最佳条件为：温度40℃、反应时间60分钟、催化剂用量0.08 g/10 mL以及2 mL的HO/甲酸，在此条件下MnO/MrGO表现出高达80%的强烈脱硫活性。在相同条件下，以氧化石墨烯（GO）为催化剂时，仅观察到41%的DBT去除率，这清楚地表明了MrGO在复合催化剂中的优势。在优化条件下，实际油样（包括柴油、汽油和煤油）的脱硫率分别为67.8%、59.5%和51.9%。本方法具有成本效益、环境友好且易于制备的特点，为燃料油商业化脱硫展现出广阔前景。