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        β-環糊精-纖維素基超交聯微球吸附分離苯乙酮和1-苯乙醇
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        1.廣西大學 化學化工學院;2.武漢綠知行環??萍加邢薰?/p>

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        國家自然科學基金(21868002, 21961160741)。


        Adsorptive separation of acetophenone and 1-phenylethanol by β-cyclodextrin-cellulose based hypercrosslinked microspheres
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        1.School of chemistry and chemical engineering,Guangxi University;2.Wuhan Lvzhixing Environmental Protection Technology Co,Ltd

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          摘要:

          石化及生物化工過程經常產出富含苯乙酮(AP)和1-苯乙醇(PE)的混合產物,采用精餾、結晶等方法很難將二者分開。利用物理吸附法對AP和PE進行分離具有重要的意義。本文制備了一種b-環糊精-纖維素基超交聯微球(HCCM),并用于吸附分離AP/PE。通過紅外光譜儀(FT-IR)、氮氣吸附-脫附、掃描電子顯微鏡(SEM)和透射電鏡(TEM)對其結構進行了表征,結果表明HCCM是由大量的糖單元和富苯基單元交織形成的具有多級孔結構的生物質基聚合微球。對HCCM吸附分離AP/PE的性能進行研究,發現間歇吸附下吸附很快達到平衡,HCCM對AP有較高的吸附量且明顯高于PE。連續吸附下PE較AP提前穿透,穿透間隔較長,并且有較高的分離因子,說明HCCM能有效地分離AP/PE。重復使用實驗證明該材料具有良好的循環使用性。

          Abstract:

          The mixture of acetophenone (AP) and 1-phenylethanol (PE), usually produced in petrochemical and biochemical processes, are difficult to be separated by the traditional distillation, crystallization, etc. It is of great significance to separate AP and PE by physical adsorption. A kind of b-cyclodextrin-cellulose based hypercrosslinked microspheres (HCCM) was prepared and used to adsorb and separate AP/PE. The structure of HCCM was characterized by FT-IR, N2 adsorption desorption, scanning electron microscopy and transmission electron microscopy. The results showed that HCCM was a biomass based polymer microsphere with hierarchically porous structure formed by interweaving a large number of sugar units and phenyl rich units. The performance of HCCM for the adsorption and separation of AP/PE was studied. It was found that the equilibrium could be reached quickly, and the adsorption capacity of AP was higher than that of PE. Furthermore, PE, broke through much earlier than AP, with a long breakthrough interval and a high separation factor, which indicate that HCCM can separate AP and PE effectively. The recycling experiment proved that the material possessed excellent reusability.

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        程昀,丁俊杰,紀紅兵,柴坤剛.β-環糊精-纖維素基超交聯微球吸附分離苯乙酮和1-苯乙醇[J].精細化工,2023,40(6):

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        歷史
        • 收稿日期:2022-09-21
        • 最后修改日期:2022-12-03
        • 錄用日期:2022-12-06
        • 在線發布日期: 2023-05-11
        • 出版日期:
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