Development of activated carbon pore structure via physical and chemical activation of biomass fibre waste
Development of activated carbon pore structure via physical and chemical activation of biomass fibre waste
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DOI：
10.1016/j.biombioe.2005.11.006
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发表时间：
2006-01-01
影响因子：
6
通讯作者：
Reed, AR
中科院分区：
文献类型：
--
作者：
Williams, PT;Reed, AR
作为纺织工业副产品产生的生物质亚麻纤维形式的生物质废物通过物理和化学活化处理以生产活性炭。物理活性炭的比表面积可达840 m2 g-1，具有介孔结构。使用氯化锌的化学活化产生高达2400 m（2）g（-1）的高表面积活性炭，并且孔径分布主要为微孔。然而，温度和氯化锌浓度的工艺条件可用于操纵碳的表面积和孔隙率以产生微孔、介孔和混合微孔/介孔活性炭。发现物理活性炭是I型和IV型炭的混合物，并且发现化学活性炭主要是I型炭。通过扫描电子显微镜观察到的物理和化学活性炭的表面形态的发展表明，物理活化产生的活性炭具有结节和凹坑的表面形态，而通过化学活化产生的活性炭具有光滑的表面形态。透射电子显微镜分析可以识别物理活性炭中的中孔结构和化学活性炭中的微孔结构。(C)2005爱思唯尔有限公司保留所有权利。
Biomass waste in the form of biomass flax fibre, produced as a by-product of the textile industry was processed via both physical and chemical activation to produce activated carbons. The surface area of the physically activated carbons were up to 840 m(2) g(-1) and the carbons were of mesoporous structure. Chemical activation using zinc chloride produced high surface area activated carbons up to 2400 m(2) g(-1) and the pore size distribution was mainly microporous. However, the process conditions of temperature and zinc chloride concentration could be used to manipulate the surface area and porosity of the carbons to produce microporous, mesoporous and mixed microporous/mesoporous activated carbons. The physically activated carbons were found to be a mixture of Type I and Type IV carbons and the chemically activated carbons were found to be mainly Type I carbons. The development of surface morphology of physically and chemically activated carbons observed via scanning electron microscopy showed that physical activation produced activated carbons with a nodular and pitted surface morphology whereas activated carbons produced through chemical activation had a smooth surface morphology. Transmission electron microscopy analysis could identify mesopore structures in the physically activated carbon and microporous structures in the chemically activated carbons. (C) 2005 Elsevier Ltd. All rights reserved.