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Activation and structural and adsorption features of activated carbons with highly developed micro-, meso- and macroporosity

机译:具有高度发展的微孔,中孔和大孔的活性炭的活化以及结构和吸附特征

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Three sets of activated carbons (ACs) were prepared with the same precursor but activated differently (by CO2 or water vapour) with various burn-off levels. The ACs demonstrate increased deviation of the pore shape from the slitshaped model with increasing burn-off and contributions of pores of different sizes depending on the activation type. Significant re-arrangement of adsorption complexes, especially of the Van der Waals type characteristic for nonpolar or weakly polar adsorbates (H2, CH4, CH2Cl2, CHCl3), occurs in both micropores and mesopores of ACs with decreasing temperature. The behaviour of their mixtures withwater and DMSO can strongly differ from that of individual adsorbates.
机译:用相同的前体制备了三组活性炭(AC),但具有不同的燃尽水平,具有不同的活性(通过CO2或水蒸气)。 ACs证明,随着燃烧的增加和孔隙大小的增加,取决于激活类型,孔隙形状与狭缝形状模型的偏差增加。随着温度的降低,AC的微孔和中孔都发生了吸附复合物的重排,尤其是非极性或弱极性吸附物(H2,CH4,CH2Cl2,CHCl3)的范德华型特征。它们与水和DMSO的混合物的行为可能与单个吸附物的行为有很大差异。

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