以烟杆炭化料为原料,采用微波加热碳酸钾活化法制备了高比表面积活性炭.研究了微波加热时间和碱炭比对活性炭的得率和吸附性能的影响,得到了优化工艺条件,所得活性炭产品的碘吸附值为1834mg/g,亚甲基兰吸附值为517.5mg/g,得率为16.65%.产品的吸附性能超过了双电层电容器专用活性炭(LY/T 1617-2004)标准的要求,同常规加热相比,活化时间缩短了78.26% .同时测定了该活性炭的氮吸附等温线,通过非定域化密度函数理论表征了活性炭的孔结构.该高比表面积活性炭的比表面积为2557m2/g,总孔体积为1.6470ml/g.
参考文献
[1] | Satoshi Mitani;Sang-Ick Lee;Koji Saito .Activation of coal tar derived needle coke with K_2CO_3 into an active carbon of low surface area and its performance as unique electrode of electric double-layer capacitor[J].Carbon: An International Journal Sponsored by the American Carbon Society,2005(14):2960-2967. |
[2] | Donni Adinata;Wan Mohd Ashri Wan Daud;Mohd Kheireddine Aroua .Production of carbon molecular sieves from palm shell based activated carbon by pore sizes modification with benzene for methane selective separation[J].Fuel Processing Technology,2007(6):599-605. |
[3] | Lee S C;Choi B Y;Lee T J et al.[J].Catalysis Today,2006,111(3-4):385-390. |
[4] | A.S. Mestre;J. Pires;J.M.F. Nogueira .Activated carbons for the adsorption of ibuprofen[J].Carbon: An International Journal Sponsored by the American Carbon Society,2007(10):1979-1988. |
[5] | 檀素霞,王同华,谭瑞淀,施柳.微波加热技术在多孔炭处理中的应用[J].炭素技术,2006(04):35-39. |
[6] | J.Hayashi;N.Yamamoto;T.Horikawa;K.Muroyama;V.G.Gomes .Preparation and characterization of high-specific-surface-area activated carbons from K_2CO_3-treated waste polyurethane[J].Journal of Colloid and Interface Science,2005(2):437-443. |
[7] | E.A.Ustinov;D.D.Do;V.B.Fenelonov .Pore size distribution analysis of activated carbons: Application of density functional theory using nongraphitized carbon black as a reference system[J].Carbon: An International Journal Sponsored by the American Carbon Society,2006(4):653-663. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%