| 具有高比表面积的稻壳灰的制备及其化学活性的研究 |
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| 引用本文： | 冯庆革,林清宇,童张法,杉田修一.具有高比表面积的稻壳灰的制备及其化学活性的研究[J].中国化学工程学报,2004,12(5):711-715. |
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| 作者姓名： | 冯庆革 林清宇 童张法 杉田修一 |
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| 作者单位： | [1]DepartmentofEnvironmentalandCivilEngineering,HachinoheInstituteofTechnology,88-1,Myo,Hachinohe031-8501,Japan [2]SchoolofChemistryandChemicalEngineering,GuangxiUniversity,Nanning530004,China |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | Preparation of rice husk ash with high specific surface area and chemical reactivity of the product are reported in this paper. The amorphous rice husk ash with high specific surface area of 311 m^2.g^-1 was produced by heating acid treated rice husk at 700~C for 4 h. The isotherms of rice husk ash are similar in shape to type Ⅱ of Brunaner‘s classification with mesopores being predominant. The rice husk ash has a high chemical reactivity, especially that pretreated with acid. This chemical reactivity depends on ashing temperature and pretreatment conditions. There is an exponential relation between the specific surface area of rice husk ash and the change in the conductivity of saturated Ca(OH)2 solution with rice husk ash, from which the specific surface area can be known according to the conductivity change.
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| 关 键 词： | 高比表面积 制备 化学活性 Ca（OH）2 研究 稻壳灰 |
| 修稿时间： | |
Study on Preparation of Rice Husk Ash with High Specific Surface Area and Its Chemical Reactivity |
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| FENG Qingge,LIN Qingyu,TONG Zhangfa,Shuichi SUGITA.Study on Preparation of Rice Husk Ash with High Specific Surface Area and Its Chemical Reactivity[J].Chinese Journal of Chemical Engineering,2004,12(5):711-715. |
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| Authors: | FENG Qingge LIN Qingyu TONG Zhangfa Shuichi SUGITA |
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| Affiliation: | Department of Environmental and Civil Engineering, Hachinohe Institute of Technology, 88-1, Myo, Hachinohe 031-8501, Japan;School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China;School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China;Department of Environmental and Civil Engineering, Hachinohe Institute of Technology, 88-1, Myo, Hachinohe 031-8501, Japan |
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| Abstract: | Preparation of rice husk ash with high specific surface area and chemical reactivity of the product are reported in this paper. The amorphous rice husk ash with high specific surface area of 311 m2·g-1 was produced by heating acid treated rice husk at 700℃ for 4 h. The isotherms of rice husk ash are similar in shape to type Ⅱof Brunaner's classification with mesopores being predominant. The rice husk ash has a high chemical reactivity,especially that pretreated with acid. This chemical reactivity depends on ashing temperature and pretreatment conditions. There is an exponential relation between the specific surface area of rice husk ash and the change in the conductivity of saturated Ca(OH)2 solution with rice husk ash, from which the specific surface area can be known according to the conductivity change. |
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| Keywords: | rice husk ash pretreatment specific surface area chemical reactivity |
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