Simultaneous preparation of silica and activated carbon from rice husk ash

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• 作者：Yan Liu ; Yupeng Guo ; Wei Gao ; Zhuo Wang ; Yuejia Ma ; Zichen Wang ; ^{wangzc@jlu.edu.cn}
• 关键词：Rice husk ash ; Silica ; Activated carbon ; Environmental-friendly
• 刊名：Journal of Cleaner Production
• 出版年：2012
• 期刊代码：47_09596526
• 类别：ce
• 出版时间：September, 2012
• 卷：32
• 期：Complete
• 页码：204-209
• 文件大小：600 K

摘要

Silica and activated carbon were simultaneously produced from rice husk ash with K₂CO₃. The surface area and average pore size of the activated carbon were 1713 m²/g and 4 nm. The maximum adsorption capacity of activated carbon was 210 mg/g for methylene blue and the capacitance value reached 190 F/g. The yield of silica reached 96.84%and the particle size was 40-50 nm. Potassium carbonate could be recycled. The entire synthetic procedure was simple, environmental-friendly and economical-effectively.