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林产化学与工业

林产化学与工业 ›› 2011, Vol. 31 ›› Issue (4): 41-45.

• 研究报告 • 上一篇    下一篇

活性炭微结构对木糖醇溶液脱色性能的影响

简相坤, 刘石彩, 边轶, 邓先伦   

  1. 中国林业科学研究院 林产化学工业研究所;生物质化学利用国家工程实验室;国家林业局 林产化学工程重点开放性实验室;江苏省生物质能源与材料重点实验室, 江苏 南京 210042
  • 收稿日期:2011-04-28 修回日期:1900-01-01 出版日期:2011-08-30 发布日期:2011-08-30
  • 通讯作者: 刘石彩,副研究员,主要从事生物质能源及活性炭研究。

Influence of Activated Carbon Microstructure on Decoloration Performance of Xylitol Solution

JIAN Xiang-kun, LIU Shi-cai, BIAN Yi, DENG Xian-lun   

  1. Institute of Chemical Industry of Forest Products,CAF;National Engineering Lab.for Biomass Chemical Utilization; Key and Open Lab.on Forest Chemical Engineering,SFA;Key Lab.of Biomass Energy and Material,Jiangsu Province, Nanjing 210042, China
  • Received:2011-04-28 Revised:1900-01-01 Online:2011-08-30 Published:2011-08-30

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摘要： 通过对4种木屑活性炭样品的吸附性能测定和微结构表征,表明活性炭对木糖醇溶液的脱色效果与亚甲基蓝吸附能力的大小密切相关,但亚甲基蓝吸附值不是决定活性炭对木糖醇溶液中色素杂质吸附的唯一因素。中孔的数量是影响活性炭对木糖醇溶液中色素杂质吸附的重要因素,尤其是尺寸为2~14 nm 的中孔的数量对木糖醇溶液中色素杂质吸附的影响比较大。红外光谱分析显示表面官能团C—O的存在会促进活性炭对木糖醇溶液中色素杂质的吸附。

关键词: 木屑活性炭, 木糖醇溶液, 吸附等温线, 微结构

Abstract: Adsorption performance and microstructure were studied using four different sawdust activated carbons. It was indicated that the adsorption value of methyleneblue had great effect on the activity of activated carbons for decoloring xylitol solution. However, it was not the only factor. The number of activated carbons' mesopores, especially the size range of 2-14 nm, impacted greatly the decoloration performance of xylitol solution. The FT-IR analyses of the activated carbons showed that the presence of surface C—O functionality might promote the adsorption.

Key words: sawdust activated carbon, xylitol solution, adsorption isotherm, microstructure

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