本文应用量子化学密度泛函理论B3PW91方法,在lanl2dz基组水平上研究了飞灰中未燃尽炭表面对汞的微观吸附机理.建立了表征未燃尽炭的饱和簇模型,讨论了该簇模型在不同的情况下对汞的吸附作用,计算得出吸附能,并做出了相关的实验解释.结果表明量子化学的理论计算是揭示汞等痕量元素的吸附机理以及筛选合适吸附剂的一种有效方法.
参考文献
[1] | Laudal D L;Brown T D .Effects of Flue Gas Constituents on Mercury Speciation[J].Fuel Processing Technology,2000,65(01):157-165. |
[2] | Galbreath Kevin C.;Zygarlicke Christopher J. .Mercury transformations in coal combustion flue gas[J].Fuel Processing Technology,2000(3):289-310. |
[3] | Wang Q;Shen W;Ma Z .Estimation of Mercury Emissions from Coal Combustion in China[J].Environmental Science and Technology,2000,34(13):2711-2713. |
[4] | Glenn A. Norton;Hongqun Yang;Robert C. Brown;Dennis L. Laudal;Grant E. Dunham;John Erjavec .Heterogeneous oxidation of mercury in simulated post combustion conditions[J].Fuel,2003(2):107-116. |
[5] | Fujiwara N;Fujita Y;Tomura K et al.Mercury Transformations in the Exhausts from Lab-Scale Coal Flame[J].FUEL,2002,81:2045-2052. |
[6] | 任建莉,周劲松,骆仲泱,岑可法.活性碳吸附烟气中气态汞的试验研究[J].中国电机工程学报,2004(02):171-175. |
[7] | Karatzaa D;Lancia A;Musmarra D et al.Study of Mercury Absorption and Desorption on Sulfur Impregnated Carbon Experimental[J].Thermal and Fluid Science,2000,21(1-3):150-155. |
[8] | 朱维良,蒋华良,陈凯先,嵇汝运,曹阳.分子间相互作用的量子化学研究方法[J].化学进展,1999(03):247-253. |
[9] | Chen N.;Yang RT. .Ab initio molecular orbital calculation on graphite: Selection of molecular system and model chemistry[J].Carbon: An International Journal Sponsored by the American Carbon Society,1998(7/8):1061-1070. |
[10] | Ohta Y;Ohta K .First principle study of the adsorption of atomic hydrogen on cluster-model surfaces[J].Synthetic Metals,2005(1/3):329-332. |
[11] | Pliego JR;Resende SM;Humeres E .Chemisorption of SO2 on graphite surface: A theoretical ab initio and ideal lattice gas model study[J].Chemical Physics: A Journal Devoted to Experimental and Theoretical Research Involving Problems of Both a Chemical and Physical Nature,2005(1/3):127-133. |
[12] | Niksa S;Fujiwara N .A Mechanism for Mercury Oxidation in Coal-Derived Exhausts[J].Air & Wastes Management Association,2002,52:894-901. |
[13] | Li Y H;Lee C W;Gullett B K .Importance of Activated Carbon'S Oxygen Functional Groups on Elemental Mercury Adsorption[J].FUEL,2003,82:451-457. |
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%