| 草粉担载Na2CO3可逆脱硫吸附剂的制备及脱硫活性 |
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| 引用本文： | 尚洪山,杨帆,寇元. 草粉担载Na2CO3可逆脱硫吸附剂的制备及脱硫活性[J]. 环境科学, 2003, 24(6): 68-73 |
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| 作者姓名： | 尚洪山 杨帆 寇元 |
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| 作者单位： | 北京大学化学与分子工程学院 北京100871;北京大学化学与分子工程学院 北京100871;北京大学化学与分子工程学院 北京100871 |
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| 基金项目： | 国家973重大基础科学研究项目(G1999022202);北京市植物资源研究开发重点实验室资助项目 |
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| 摘 要： | 通过浸渍方法,制备了5%～90%(质量分数)担载量Na2CO3/草粉脱硫剂.实验结果表明,较小的草粉粒度(≤0.28mm)和较低的气体流量(40mL/min)有利于SO2脱除,但是脱硫温度(70℃～300℃)对脱硫效果影响不大.利用XRD,SEM,ATR-IR等分析手段,研究了草粉改性Na2CO3脱硫吸附剂的机理.实验证明:改性Na2CO3吸附剂高效脱硫的机理主要在于吸附剂表面结构的无定形态,因而具有比较大的比表面积(12.14m2/g)和孔体积(0.093cm3/g).
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| 关 键 词： | 草粉 Na2CO3 在线红外 脱硫效率 SO2 无定形态 |
| 文章编号： | 0250-3301(2003)06-06-0068 |
| 收稿时间： | 2002-10-31 |
| 修稿时间： | 2002-10-31 |
Reparation and Desulfurization of Na2CO3/Straw Sorbents for Removing SO2 from Flue Gas |
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| Shang Hongshan,Yang Fan and Kou Yuan. Reparation and Desulfurization of Na2CO3/Straw Sorbents for Removing SO2 from Flue Gas[J]. Chinese Journal of Environmental Science, 2003, 24(6): 68-73 |
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| Authors: | Shang Hongshan Yang Fan Kou Yuan |
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| Affiliation: | College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China. |
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| Abstract: | A series of SO2 sorbents 5%-90% (mass percent) Na2CO3/straw were prepared by conventional incipient wetness impregnation of straw with an aqueous solution of Na2CO3. It was showed that small particle size (< or = 0.28 mm) of the straw and low flow rate (40 mL/min) of the feed gas favor the removal of SO2, while temperature (70 degrees C-300 degrees C) has little effect on the desulfurization efficiency. Based on XRD, SEM and ATR-IR analysis it can be concluded that the Na2CO3 on the surface of the straw is mainly in an amorphous state. The unique structural features of the straw and its interaction with Na2CO3 lead to the amorphous structure having greater surface area (12.14 m2/g) and pore volume (0.093 cm3/g) with a high loading of Na2CO3. |
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| Keywords: | straw Na2CO3 desulfurization efficiency online IR SO2 amorphous structure |
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