Impairments in the central nervous system(CNS)are a prevalent cause of life-long disabilities worldwide,representing serious health,social,and economic concerns(Doblado et al.,2021).During the last decades,with the po...Impairments in the central nervous system(CNS)are a prevalent cause of life-long disabilities worldwide,representing serious health,social,and economic concerns(Doblado et al.,2021).During the last decades,with the population eldering and the increase in the life span,we have experienced an increase in CNS-related disorders,like stroke and neurodegenerative diseases(Jarrin et al.,2021).展开更多
This work describes the synthesis of catalysts based on red mud/polyethylene terephthalate（PET） composites and their subsequent heat treatment under N2 atmosphere.The materials were characterized by scanning electro...This work describes the synthesis of catalysts based on red mud/polyethylene terephthalate（PET） composites and their subsequent heat treatment under N2 atmosphere.The materials were characterized by scanning electron microscopy（SEM）,temperature programmed reduction（TPR）,Fourier transform infrared spectroscopy（FT–IR）,X-ray diffraction（XRD）,thermogravimetric（TG） analysis and N2adsorption/desorption.The catalysts were evaluated in the oxidative desulfurization reaction of dibenzothiophene（DBT） in a biphasic system.The results indicated that the PET impregnation on red mud increased the affinity of the catalyst with the nonpolar phase（fuel）,in which the contaminant was dissolved,allowing a higher conversion（up to 80%） and selectivity to the corresponding dibenzothiophene sulfone.The sulfone compound is more polar than DBT and diffused into the polar solvent as indicated by the data obtained via gas chromatography–mass spectrometry（GC–MS）.展开更多
基金supported by the research funding support from Brazilian Agencies:CAPES,FAPEMIG,CNPq,and FINEP(to HSM)。
文摘Impairments in the central nervous system(CNS)are a prevalent cause of life-long disabilities worldwide,representing serious health,social,and economic concerns(Doblado et al.,2021).During the last decades,with the population eldering and the increase in the life span,we have experienced an increase in CNS-related disorders,like stroke and neurodegenerative diseases(Jarrin et al.,2021).
文摘This work describes the synthesis of catalysts based on red mud/polyethylene terephthalate（PET） composites and their subsequent heat treatment under N2 atmosphere.The materials were characterized by scanning electron microscopy（SEM）,temperature programmed reduction（TPR）,Fourier transform infrared spectroscopy（FT–IR）,X-ray diffraction（XRD）,thermogravimetric（TG） analysis and N2adsorption/desorption.The catalysts were evaluated in the oxidative desulfurization reaction of dibenzothiophene（DBT） in a biphasic system.The results indicated that the PET impregnation on red mud increased the affinity of the catalyst with the nonpolar phase（fuel）,in which the contaminant was dissolved,allowing a higher conversion（up to 80%） and selectivity to the corresponding dibenzothiophene sulfone.The sulfone compound is more polar than DBT and diffused into the polar solvent as indicated by the data obtained via gas chromatography–mass spectrometry（GC–MS）.
