| 煤基磁性活性炭的制备 |
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| 引用本文： | 邢雯雯,周铁桥,张军,李兰廷,解强. 煤基磁性活性炭的制备[J]. 北京科技大学学报, 2009, 31(1) |
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| 作者姓名： | 邢雯雯 周铁桥 张军 李兰廷 解强 |
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| 作者单位： | 中国矿业大学,北京,化学与环境工程学院,北京,100083 |
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| 基金项目： | 国家自然科学基金资助项目(No.0776150) |
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| 摘 要： | 以大同烟煤为原料、Fe3O4作为添加剂,催化制备了煤基磁性活性炭(MCAC).利用氮气吸附等温线表征了MCAC的孔隙结构,并考察了其吸附性能(碘值、亚甲兰值)和磁学性能.结果表明,Fe3O4对MCAC孔隙的产生具有催化作用,有利于活性炭中孔的形成和发育.其中添加10%Fe3O4的MCAC中孔率高达76.0%.MCAC与普通活性炭(AC-0)相比,碘吸附值明显降低,而亚甲兰吸附值显著提高.添加7%Fe3O4的MCAC,其碘值降低了25.5%,亚甲兰值提高了79.9%.添加适量的Fe3O4制备的MCAC具有较高的比饱和磁化强度和磁导率.Fe3O4质量分数为4%和10%时,所得MCAC的比饱和磁化强度分别是AC-0的24.4倍和44.5倍.
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| 关 键 词： | 煤基活性炭 磁性活性炭 催化制备 氮吸附 吸附性能 磁学性能 |
Preparation of magnetic coal-based activated carbon |
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| XING Wen-wen,ZHOU Tie-qiao,ZHANG Jun,LI Lan-ting,XIE Qiang. Preparation of magnetic coal-based activated carbon[J]. Journal of University of Science and Technology Beijing, 2009, 31(1) |
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| Authors: | XING Wen-wen ZHOU Tie-qiao ZHANG Jun LI Lan-ting XIE Qiang |
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| Abstract: | Magnetic coal-based activated carbons(MCAC) were prepared from Datong bituminous coal in the presence of different amounts of Fe3O4.Their pore structures were characterized by N2 adsorption isotherm,and their iodine value,methylene blue value and magnetic properties were determined.The results show that Fe3O4 in the raw material is of importance to mesopores formation,and the ratio of mesopore volume reaches up to 76.0% when the mass fraction of Fe3O4 in the raw material is 10%.The iodine value decreases by... |
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| Keywords: | coal-based activated carbon magnetic activated carbon catalytic preparation nitrogen adsorption adsorption capability magnetic property |
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