Juan Qiu, Yaqi Peng, Minghui Tang, Shengyong Lu, Xiaodong Li, Jianhua Yan
{"title":"Solvothermal preparation of Mn-based catalysts for simultaneous removal of 1,2-dichlorobenzene and furan","authors":"Juan Qiu, Yaqi Peng, Minghui Tang, Shengyong Lu, Xiaodong Li, Jianhua Yan","doi":"10.1007/s42768-022-00096-1","DOIUrl":null,"url":null,"abstract":"<div><p>In this study, Mn-based bimetallic oxide catalysts were synthesized via the solvothermal method. Different metals (Ce, Co and Fe) exhibited a great impact on the physicochemical properties of catalysts, resulting in different catalytic activities for the simultaneous removal of 1,2-dichlorobenzene (1,2-DCB) and furan, as a model of polychlorinated dibenzodioxins and dibenzo-furans (PCDD/Fs). Fe–MnOx presented the best catalytic activity, with a removal efficiency of 62% for 1,2-DCB and 100% for furan at 240 °C. Several analytical techniques were employed, namely, Brunauer–Emmett–Teller (BET), X-ray diffraction (XRD), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), H<sub>2</sub> temperature-programmed reduction (H<sub>2</sub>-TPR), and ammonia temperature programmed desorption (NH<sub>3</sub>-TPD). Compared with pure MnOx catalysts, Fe–MnOx shows a higher specific surface area of 117.9 m<sup>2</sup>/g. SEM observations showed flower-like nanosheet structures for Fe–MnOx. XPS analysis indicated that Mn<sup>4+</sup>/Mn<sup>3+</sup> and active oxygen play the key roles in the catalytic oxidation of 1,2-DCB and furan. The catalytic activity, selectivity and stability of Mn-based bimetallic oxide catalysts for the oxidation of 1,2-DCB and furan were tested. Competition exists between 1,2-DCB and furan such that the adsorption of furan occurs prior to 1,2-DCB.</p></div>","PeriodicalId":807,"journal":{"name":"Waste Disposal & Sustainable Energy","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2022-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Waste Disposal & Sustainable Energy","FirstCategoryId":"6","ListUrlMain":"https://link.springer.com/article/10.1007/s42768-022-00096-1","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
In this study, Mn-based bimetallic oxide catalysts were synthesized via the solvothermal method. Different metals (Ce, Co and Fe) exhibited a great impact on the physicochemical properties of catalysts, resulting in different catalytic activities for the simultaneous removal of 1,2-dichlorobenzene (1,2-DCB) and furan, as a model of polychlorinated dibenzodioxins and dibenzo-furans (PCDD/Fs). Fe–MnOx presented the best catalytic activity, with a removal efficiency of 62% for 1,2-DCB and 100% for furan at 240 °C. Several analytical techniques were employed, namely, Brunauer–Emmett–Teller (BET), X-ray diffraction (XRD), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), H2 temperature-programmed reduction (H2-TPR), and ammonia temperature programmed desorption (NH3-TPD). Compared with pure MnOx catalysts, Fe–MnOx shows a higher specific surface area of 117.9 m2/g. SEM observations showed flower-like nanosheet structures for Fe–MnOx. XPS analysis indicated that Mn4+/Mn3+ and active oxygen play the key roles in the catalytic oxidation of 1,2-DCB and furan. The catalytic activity, selectivity and stability of Mn-based bimetallic oxide catalysts for the oxidation of 1,2-DCB and furan were tested. Competition exists between 1,2-DCB and furan such that the adsorption of furan occurs prior to 1,2-DCB.