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Waste Disposal & Sustainable Energy
Waste Disposal & Sustainable Energy  2022, Vol. 4 Issue (2): 105-116    DOI: 10.1007/s42768-022-00096-1
    
Solvothermal preparation of Mn-based catalysts for simultaneous removal of 1,2-dichlorobenzene and furan
Solvothermal preparation of Mn-based catalysts for simultaneous removal of 1,2-dichlorobenzene and furan
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摘要： 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.
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.
出版日期: 2022-07-22
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Juan QiuYaqi PengJianhua Yan

引用本文:

Juan QiuYaqi PengJianhua Yan. Solvothermal preparation of Mn-based catalysts for simultaneous removal of 1,2-dichlorobenzene and furan. Waste Disposal & Sustainable Energy, 2022, 4(2): 105-116.

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https://www.zjujournals.com/wdse/CN/10.1007/s42768-022-00096-1    或    https://www.zjujournals.com/wdse/CN/Y2022/V4/I2/105

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