研究生: |
吳凱煜 |
---|---|
論文名稱: |
烷基碘在Pt(111)表面上的吸附行為及熱分解反應 |
指導教授: | 洪偉修 |
學位類別: |
碩士 Master |
系所名稱: |
化學系 Department of Chemistry |
論文出版年: | 2006 |
畢業學年度: | 94 |
語文別: | 中文 |
論文頁數: | 85 |
中文關鍵詞: | TPD 、XPS 、Pt 、alkyl iodide 、adsorption |
論文種類: | 學術論文 |
相關次數: | 點閱:156 下載:0 |
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在超高真空下,探討烷基碘( alkyl iodide,R-I )化合物在Pt(111)表面的吸附及熱分解反應。以程溫脫附法( temperature-programmed desorption,TPD )偵測脫附產物。並以同步輻射光為光源的X-ray光電子能譜( X-ray photoelectron spectroscopy,XPS )分析升溫過程中吸附物的化學組態變化。綜合TPD與XPS的數據,提出烷基碘在鉑表面的反應及分解機制。
低覆蓋率的條件下,所有化學吸附的烷基碘分子在低於200K的溫度會分解成烷基與碘原子,烷基會進行脫氫反應,氫原子結合以分子形式脫附,留下殘碳於表面。在較高的覆蓋率之下,隨著溫度逐步升高,物理吸附的烷基碘會先脫附出來,接著化學吸附的烷基碘則是斷裂C-I鍵,生成烷基與碘原子,烷基除了與氫原子鍵結,還原生成烷類脫附;具有β-H的烷基會以β-hydride elimination生成烯類,以di-σ bonding的方式鍵結在表面,有一部分烯類脫附離開表面。在更高的溫度下,烯類會再進行脫氫反應,一連串的去氫反應後,氫原子在400~500K結合產生氫分子脫附,最後留下殘碳於表面。
比較不同級數烷基的反應結果,得知三級與二級烷基因為立體障礙的因素,氫原子較不易與烷基鍵結,所以烯類與烷類的比例相差較大。
1. W. Hu, Michio Matsumura, Kazuaki Furukawa, Keiichi Torimitsu. J. Phys. Chem. B 2004, 108, 13116.
2. W.T. Lee, F. Thomas, R.I. Masel. Surf. Sci. 1998, 418, 479.
3. E.L. Muetterties, J. Stein. Chem. Rev. 1979, 79, 479.
4. http://en.wikipedia.org/wiki/Fischer-Tropsch_synthesis#Original_proc ess
5. M. Winter, R. J. Brodd. Chem. Rev. 2004, 104, 4245.
6. B.E. Bent. Chem. Rev. 1996, 96, 1361.
7. X.D. Peng, R.Viswanathan, Smudde, G. H., Jr. Stair, P.C. Rev. Sci. Instrum. 1992, 63, 3930. J.A. Blush, H. Clauberg, D.W.Kohn, D.W. Minsek, X. Zhang, P. Chen, Acc. Chem. Res. 1992, 25, 385. D.W. Kohn, H. Clauberg, P. Chen. Rev. Sci. Instrum. 1992, 63, 4003.
8. G.H. Smudde, Jr., X.D. Peng, R.Viswanathan, P.C. Stair. J. Vac. Sci. Technol. A 1991, 9, 1885.
9. C.M. Chiang, B.E. Bent. Surf. Sci. 1992, 279, 79.
10. D.H. Fairbrother, X.D. Peng, R.Viswanathan, P.C. Stair, M. Trenary, J. Fan. Surf. Sci. Lett. 1993, 285, L455.
11. C.W.J. Bol, C.M. Friend. J. Am. Chem. Soc. 1995, 117, 8053.
12. D. Strongin, J. Mowlem. Chem. Phys. Lett. 1991, 187, 281.
13. X.L. Zhou, S.R. Coon, J.M. White. J. Chem. Phys. 1991, 94,1613.
14. J.L. Lin, B.E. Bent. J. Am. Chem. Soc. 1993, 115, 2849.
15. J.L. Lin, B.E. Bent. J. Phys. Chem. 1993, 97, 9713.
16. B.E. Bent, R.G. Nuzzo, L.H. Dubois. J. Am. Chem. Soc. 1989,111, 1634.
17. B.R. Zegarski, L.H. Dubois. Surf. Sci. Lett. 1992, 262, L129.
18. M.E. Pansoy-Hjelvik, R. Xu, Q. Gao, K. Weller, F. Feher, J.C. Hemminger. Surf. Sci. 1994, 312, 97.
19. I. Kovacs, N. Iost, F. Solymosi. J. Chem. Phys. 1994, 101, 4236.
20. J.M. White. Langmuir 1994, 10, 3946.
21. M.B. Lee, Q.Y. Yang, S.L. Tang, S.T.Ceyer. J. Chem.Phys. 1986, 85, 1693.
22. M.B. Lee, Q.Y. Yang, S.T. Ceyer. J. Chem. Phys. 1987, 87, 2724.
23. J.D. Beckerle, A.D. Johnson, Q.Y. Yang, S.T. Ceyer. J. Vac. Sci. Technol. A 1988, 6, 903.
24. J.D. Beckerle, A.D. Johnson, Q.Y. Yang, S.T. Ceyer. J. Chem. Phys. 1989, 91, 5756.
25. M.L. Burke, R.J. Madix. J. Am. Chem. Soc. 1991, 113, 1475.
26. K.A. Son, M. Mavrikakis, J.L. Gland. J. Phys. Chem. 1995, 99, 6270.
27. M. Xi, B.E. Bent. J. Phys. Chem. 1993, 97, 4167.
28. R.M. Lambert, R.M. Ormerod. In Surface Reactions. R.J.Ed. Madix. Springer Series in Surface Science 34; Springer Verlag: New York, 1994, Chapter 4.
29. R.M. Ormerod, R.M. Lambert, H. Hoffmann, F. Zaera, J.M. Yao, D.K. Saldin, L.P. Wang, D.W. Bennett, W.T. Tysoe. Surf. Sci. 1993, 295, 277.
30. M. Campagna, R. Rosei. Photoemission and Adsorption Spectroscopy of Solid and Interfaces with Synchrotron Radiation, North-Holland. 1990.
31. 陳建德, 真空科技, 1997, 9卷3/4期, 32.
32. 汪建民, 材料分析, 1998, 21章.
33. J.J. Yeh. Atomic Calculation of Photoionzation Cross-Section and Asymmetry Parameters, Gordon and Breach Science. 1993.
34. E. Hahn. Adv. Electronic and Electron Physics. 1989, 75, 233.
35. R.P.H. Gasser, An Introduction to Chemisorption and Catalysis by Metal,Oxford University Press, 1985.
36. An Introduction to Surface Chemistry,
http://www.chem.qmw.ac.uk/surfaces/scc/
37. P.A. Redhead. Vacuum 1962, 12, 203.
38. W. Rankc, J. Finster, H.J. Kuhr. Surf. Sci.1987,187,112;Surf. Sci. 1987, 192, 81.
39. F. Zaera; H. Hoffmann. J. Phys. Chem. 1991, 95, 6297.
40. R.C. Baetzold, G. Apai, E. Shustorovich, R. Jaeger. Phys. Rev. B 26 1982, 4022.
41. T.H. Lin , T.P. Huang , Y.L. Liu , C.C. Yeh , Y.H. Lai , W.H. Hung.
Surf. Sci. 2005, 578, 27.
42. M.A. Henderson, G.E. Mitchell, J.M. White. Surf. Sci.1987,184,L325.
43. R. Deng, E. Herceg, M. Trenary. J.AM.CHEM.SOC. 2005,127,17628.
44. M.X. Yang, S.K. Jo, A. Paul, L. Avila, B.E. Bent. Surf. Sci. 1995, 325, 102.
45. C. Panja, E.C. Samano, N.A. Saliba, B.E. Koel.Surf. Sci.2004,553,39.
46. F. Zaera. Surf. Sci. 1989, 219, 453.
47. C.M. Chiang, H. Wenzlaff, C.J. Jenks, B.E. Bent. J.Vac.Sci.Technol. A 1992, 10, 2185
48. C.H. Hwang, C.W. Lee, H. Kang, C. M. Kim. Surf. Sci. 2001,490, 144
49. R. Deng, E. Herceg, M. Trenary. Surf. Sci. 2004, 560 L195
50. W.T. Tysoe, PhD Thesis,University of Cambridge. 1982.
51. I. Kovacs, F. Solymosi. J. Phys. Chem. 1993, 97, 11056.
52. T.B. Scoggins, H. Ihm, J.M. White. Israel Journal of Chemistry 1998, 38, 353.
53. F. Zaera, D. Chrysostomou. Surf. Sci. 2000, 457, 71.
54. F. Zaera, D. Chrysostomou. Surf. Sci. 2000, 457, 89.
55. D. Chrysostomou, C. French, F. Zaera. Catal. Lett. 2000, 69, 117.
56. F. Zaera, H. Hoffmann, P.R. Griffiths. Journal of Electron Spectroscopy and Related Phenomena 54/55, 1990, 705.
57. S. Tjandra, F. Zaera. J. Am. Chem. Soc. 1995, 117,9749.
58. Q.Y. Yang, A.D. Johnson, K.J. Maynard, S.T. Ceyer. J.Am.Chem. Soc. 1989, 111, 8748.
59. B.A. Gurney, W. Ho, J. Chem. Phys. 1987, 87, 1376.
60. C. Zheng, Y. Apeloig, R. Hoffmann. J. Am. Chem. Soc. 1988, 110, 749.
61. F. Zaera, J. Phys. Chem. 1990, 94, 5090.
62. S.M. Davis, F. Zaera, G.A. Somorjai. J. Am. Chem. SOC. 1982, 104, 7453.
63. F. Zaera. Chem. Rev. 1995, 95, 2651.
64. L. Hammer, B. Dotsch, F. Brandenstein, A. Fricke, K. Muller. J. Electron Spectrosc. Relat. Phenom. 1990,54/55,687.