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- W2978451753 abstract "Cerium-doped MCM-41(Ce-MCM-41) was prepared by a hydrothermal method and its catalytic activity for ozonation of p-chlorobenzoic acid(p-CBA) in aqueous solution was studied.Ce-MCM-41 was characterized by low angle X-ray powder diffraction(XRD),nitrogen adsorption-desorption(BET),ultraviolet-visible diffuse reflection spectrum(UV-Vis DRS) and transmission electron microscopy(TEM).The results showed that the material retained a highly ordered mesopore structure of pure silica MCM-41 and had a high surface area.Cerium was incorporated into the framework of MCM-41,locating at tetrahedrally coordinated sites.Ce-MCM-41 significantly improved the effect of ozone oxidation.After 60 min reaction time,TOC removal rate was 63% with MCM-41,86% with Ce-MCM-41(Si/Ce=60),while only 52% with O3 alone.Besides,Ce-MCM-41 had much less cerium leaching(0.085 mg·L-1) compared with that of Ce/MCM-41(0.44 mg·L-1).After being used for three times,TOC removal rate decreased only by 5%,while p-CBA removal rate kept nearly constant.Ce-MCM-41 is a promising catalyst for ozonation process." @default.
- W2978451753 created "2019-10-10" @default.
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- W2978451753 date "2012-01-01" @default.
- W2978451753 modified "2023-09-26" @default.
- W2978451753 title "Synthesis of cerium-doped MCM-41 for ozonation of p-chlorobenzoic acid" @default.
- W2978451753 hasPublicationYear "2012" @default.
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