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摘要
沙柳因生长特性,资源储蓄量十分丰富,以之为原料制备高比表面积活性炭,可进一步扩展沙柳材的应用范围。通过探究物料比、活化温度、活化时间对沙柳材活性炭吸附性的影响,得到了制备高比面积沙柳材活性炭的关键工艺参数为1∶5∶45(炭粉∶KOH∶水)的物料比、700℃的活化温度、1.5h的活化时间。此工艺下制备的沙柳材活性炭的比表面高达2693m2/g,远超高比表面积活性炭的要求,孔隙结构主要以微孔为主,存在少量的中孔,分布在 2～4nm的孔径范围内。
Abstract
Salix psammophila resource is abundant due to its growth characteristics.The preparation of activated carbon with high specific surface area from salix can further expand its application area.By exploring the effects of material ratio,activation temperature,and activation time on the adsorption capacity of activated carbon,the key process parameters were obtained,that was 1∶5∶45,700℃,and 1.5h,respectively.The specific surface area of prepared activated carbon reached 2693m2/g,and their micropores were well-developed.A small number of mesopores existed in the range of 2～4nm.
关键词
高比表面积
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活性炭
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沙柳
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工艺
Key words
high specific surface area
/
activated carbon
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Salix psammophila
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process parameter
高比表面积沙柳材活性炭的制备[J].
化工新型材料, 2021, 49(8): 174-177 DOI:10.19817/j.cnki.issn 1006-3536.2021.08.036
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基金资助
国家自然科学基金项目(31960292);校青年科技骨干基金(2017XQG-1)
