| 复合活化剂制备稻壳活性炭影响因素及特性 |
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| 引用本文： | 刘斌,马叶,顾洁,周建斌.复合活化剂制备稻壳活性炭影响因素及特性[J].生物质化学工程,2015,49(4):35-39. |
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| 作者姓名： | 刘斌 马叶 顾洁 周建斌 |
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| 作者单位： | 1. 南京林业大学 材料科学与工程学院, 江苏 南京 210037;
2. 南京林业大学 化学工程学院, 江苏 南京 210037 |
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| 基金项目： | 林业公益性行业科研专项项目(201304611);江苏省科技厅产学研联合创新资金-前瞻性联合研究项目(BY2014006-01);林业科学技术推广项目([2014]40) |
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| 摘 要： | 以稻壳为原料,ZnCl2-CuCl2为复合活化剂,制备稻壳活性炭,并以BET比表面积和吸附性能为指标,通过正交试验对制备的工艺条件进行优化,并对制得的稻壳活性炭采用氮气吸附等温线、X射线衍射仪(XRD)表征。结果表明,稻壳可以被制得大比表面积活性炭。影响活性炭比表面积和吸附性能最重要的因素是氯化锌浓度和活化温度,最佳制备工艺条件是氯化锌浓度5 mol/L,氯化铜浓度 0.4 mol/L,活化温度500 ℃,活化时间2 h。该条件下制得的稻壳活性炭比表面积为1 924 m2/g,碘吸附值为1 041 mg/g,亚甲基蓝吸附值为 188 mg/g。
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| 关 键 词： | 活性炭 复合活化剂 稻壳 正交试验 |
| 收稿时间： | 2015-01-09 |
Preparation and Characterization of Activated Carbon from Rice Husk with Composite Activator |
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| LIU Bin,MA Ye,GU Jie,ZHOU Jian-bin.Preparation and Characterization of Activated Carbon from Rice Husk with Composite Activator[J].Biomass Chemical Engineering,2015,49(4):35-39. |
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| Authors: | LIU Bin MA Ye GU Jie ZHOU Jian-bin |
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| Affiliation: | 1. College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China;
2. College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China |
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| Abstract: | A range of activated carbons were prepared from rice husk with ZnCl2-CuCl2 composite activator.The preparation conditions were optimized by orthogonal test using ZnCl2 concentration,CuCl2 concentration,activation temperature and activation time as effect factors.The adsorption properties of produced activated carbons were investigated.Rice husk-based activated carbon (RAC) was characterized by nitrogen adsorption-desorption isotherms and X-ray diffraction (XRD).Results indicated that rice husk could produce activated carbon with high surface area.The optimized conditions were as follows:5mol/L ZnCl2,0.4 mol/L CuCl2,activation temperature 500 ℃,and activation time 2 h.The Iodine number,methylene blue value and BET surface area of the prepared activated carbon were 1 041 mg/g,188 mg/g and 1 924 m2/g,respectively. |
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| Keywords: | activated carbon composite activator rice husk orthogonal test |
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