研究了椰壳基活性炭微孔结构和化学改性对其储氢能力的影响.结果表明,物理活化的椰壳基活性炭用HF或NH3·H2O处理后可提高活性炭的吸氢能力,用HNO3处理后吸氢能力几乎没有什么变化,而用H3PO4处理后吸氢能力却有明显的下降.活性炭的比表面积、孔径分布和表面性质都会影响其吸附氢气的能力,其中,比表面积是最主要的影响因素.
The effect of the microstructure of coconut-shell-based activated carbons, and their treatment with chemicals, on hydrogen adsorption capacity was studied. Active carbons from coconut shells using physical activation could be improved for hydrogen adsorption by treatment with HF or NH3 ·H2O. Treatment with HNO3 had no obvious effect and the treatment with H3PO4 lowered the hydrogen adsorption capacity considerably. All of the effects could be accounted for by changes in the specific surface area, pore size distribution, and surface chemistry of the active carbons. The specific surface area of carbons was the dominant factor for hydrogen adsorption no matter what kind of treatment was performed.
参考文献
| [1] | Li Zhou .Progress and problems in hydrogen storage methods[J].Renewable & sustainable energy reviews,2005(4):395-408. |
| [2] | 詹亮,张睿,王艳莉,梁晓怿,李开喜,吕春祥,凌立成,袁渭康.Pd在超级活性炭上的负载对其储氢性能的影响[J].新型炭材料,2005(01):33-38. |
| [3] | 詹亮,李开喜,吕春祥,朱星明,宋燕,凌立成.超级活性炭的制备及其储氢性能初步研究[J].新型炭材料,2001(04):31-35. |
| [4] | E. A. HEINTZ .THE CHARACTERIZATION OF PETROLEUM COKE[J].Carbon: An International Journal Sponsored by the American Carbon Society,1996(6):699-709. |
| [5] | Zhonghua Hu;M. P. Srinivasan .Preparation of high-surface-area activated carbons from coconut shell[J].Microporous and Mesoporous Materials,1999(1):11-18. |
| [6] | 周理;周亚平 .关于氢在活性炭上高压吸附特性的实验研究[J].中国科学B辑,1996,26(05):473-480. |
| [7] | 邢伟,阎子峰.石油焦预氧化对超级活性炭孔结构和表面性质的影响[J].新型炭材料,2002(03):25-30. |
| [8] | Tamon H.;Okazaki M. .INFLUENCE OF ACIDIC SURFACE OXIDES OF ACTIVATED CARBON ON GAS ADSORPTION CHARACTERISTICS[J].Carbon: An International Journal Sponsored by the American Carbon Society,1996(6):741-746. |
| [9] | Agarwal R K;Noh J S;Schwarz A et al.Effect of surface acidity of activated carbon on hydrogen storage[J].Carbon,1987,25(02):219-226. |
| [10] | Schwarz J A .Hydrogen storage on activated carbon[R].The New York State Energy Research and Development Authority and Ontario Ministry of Energy,1994. |
| [11] | Cazorla-Amoros D.;de la Casa-Lillo MA.;Linares-Solano A.;Alcaniz-Monge J. .CO2 as an adsorptive to characterize carbon molecular sieves and activated carbons[J].Langmuir: The ACS Journal of Surfaces and Colloids,1998(16):4589-4596. |
| [12] | Bharath Rangarajan;Carl T. Lira;Ramkumar Subramanian .Simplified Local Density Model for Adsorption over Large Pressure Ranges[J].AIChE Journal,1995(4):838-845. |
| [13] | Boehm H P;Eley D D;Pines H.Advances in Catalysis[M].New York:Academic Press,Inc,1966:179-274. |
| [14] | Zhou L.;Bai SP.;Su W.;Yang J.;Zhou YP. .Comparative study of the excess versus absolute adsorption of CO2 on superactivated carbon for the near-critical region[J].Langmuir: The ACS Journal of Surfaces and Colloids,2003(7):2683-2690. |
| [15] | R. Strobel;L. Jdrissen;T. Schliermann .Hydrogen adsorption on carbon materials[J].Journal of Power Sources,1999(2):221-224. |
| [16] | Nijkamp MG.;van Dillen AJ.;de Jong KP.;Raaymakers JEMJ. .Hydrogen storage using physisorption - materials demands[J].Applied physics, A. Materials science & processing,2001(5):619-623. |
| [17] | A. Linares-Solano;I. Martin-Gullon;C. Salinas-Martinez de Lecea .Activated carbons from bituminous coal: effect of mineral matter content[J].Fuel,2000(6):635-643. |
| [18] | Barton S S;Evans M J B;MacDonald J A F .Adsorption of water vapor on nonporous carbon[J].LANGMUIR,1994,10(11):4250-4252. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%