DOI QR코드

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Hydrogenation of Phenylacetylene to Styrene on Pre-CxHy- and C-Covered Cu(111) Single Crystal Catalysts

  • Sohn, Young-Ku (Department of Chemistry, Yeungnam University) ;
  • Wei, Wei (Center for Materials Chemistry, Department of Chemistry and Biochemistry, The University of Texas at Austin) ;
  • White, John M. (Center for Materials Chemistry, Department of Chemistry and Biochemistry, The University of Texas at Austin)
  • 투고 : 2010.11.22
  • 심사 : 2011.03.20
  • 발행 : 2011.05.20

초록

Thermal hydrogenation of phenylacetylene (PA, $C_8H_6$) to styrene ($C_8H_8$) on pre-$C_xH_y$- and C-covered Cu(111) single crystal substrates has been studied using temperature-programmed desorption (TPD) mass spectrometry. Chemisorbed PA with an acetylene group has been proved to be associated with hydrogen of pre-adsorbed $C_xH_y$ to form styrene (104 amu) on Cu surface. For the parent (PA) mass (102 amu) TPD profile, the TPD peaks at 360 K and 410 K are assigned to chemisorbed vertically aligned PA and flat-lying cross-bridged PA, respectively (J. Phys. Chem. C 2007, 111, 5101). The relative $I_{360K}/I_{410K}$ TPD ratio dramatically increases with increasing pre-adsorbed $C_xH_y$ before dosing PA, while the ratio does not increase for pre-C-covered surface. For PA on pre-$C_xH_y$-covered Cu(111) surface, styrene desorption is enhanced relative to the parent PA desorption, while styrene formation is dramatically quenched on pre-C-covered (lack of adsorbed hydrogen nearby) surface. It appears that only cross-bridged PA associates with adsorbed hydrogen to form styrene that promptly desorbs at 410 K, while vertically aligned PA is less likely to participate in forming styrene.

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참고문헌

  1. Bent, B. E. Chem. Rev. 1996, 96, 1361. https://doi.org/10.1021/cr940201j
  2. Zaera, F. Chem. Rev. 1995, 95, 2651.
  3. Ma, Z.; Zaera, F. Surf. Sci. Rep. 2006, 61, 229. https://doi.org/10.1016/j.surfrep.2006.03.001
  4. Borodzi ski, A. Catal. Lett. 1999, 63, 35. https://doi.org/10.1023/A:1019052618049
  5. Molero, H.; Bartlett, B. F.; Tysoe, W. T. J. Catal. 1999, 181, 49. https://doi.org/10.1006/jcat.1998.2294
  6. Kyriakou, G.; Kim, J.; Tikhov, M. S.; Macleod, N.; Lambert, R. M. J. Phys. Chem. B 2005, 109, 10952. https://doi.org/10.1021/jp044213c
  7. Middleton, R. L.; Lambert, R. M. Catal. Lett. 1999, 59, 15. https://doi.org/10.1023/A:1019027311804
  8. Deng, R.; Herceg, E.; Trenary, M. Surf. Sci. 2004, 560, L195. https://doi.org/10.1016/j.susc.2004.05.012
  9. Lin, J.-L.; Bent, B. E. J. Phys. Chem. 1993, 97, 9713. https://doi.org/10.1021/j100140a030
  10. Somorjai, G. A.; Park, J. Y. Angew. Chem. Int. Ed. 2008, 47, 9212. https://doi.org/10.1002/anie.200803181
  11. Morin, C.; Simon, D.; Sautet, P. Surf. Sci. 2006, 600, 1339. https://doi.org/10.1016/j.susc.2006.01.033
  12. Xi, M.; Bent, B. E. J. Vac. Sci. Technol. B 1992, 10, 2440.
  13. Studt, F.; Abild-Pedersen, F.; Bligaard, T.; Sorensen, R. Z.; Christensen, C. H.; Norskov, J. K. Science 2008, 320, 1320. https://doi.org/10.1126/science.1156660
  14. Guczi, L.; Schay, Z.; Stefler, Gy.; Liotta, L. F.; Deganello, G.; Venezia, A. M. J. Catal. 1999, 182, 456. https://doi.org/10.1006/jcat.1998.2344
  15. Wilhite, B. A.; McCready, M. J.; Varma, A. Ind. Eng. Chem. Res. 2002, 41, 3345. https://doi.org/10.1021/ie0201112
  16. Sohn, Y.; Wei, W.; White, J. M. J. Phys. Chem. C 2007, 111, 5101. https://doi.org/10.1021/jp068398u
  17. [NIST] http://webbook.nist.gov/chemistry/ (22 Nov. 2010)
  18. Burri, D. R.; Choi, K.-M.; Han, S.-C.; Burri, A.; Park, S.-E. Bull. Korean Chem. Soc. 2007, 28, 53. https://doi.org/10.5012/bkcs.2007.28.1.053
  19. Hong, D.-Y.; Vislovskiy, V. P.; Park, Y.-H.; Chang, J.-S. Bull. Korean Chem. Soc. 2006, 27, 789. https://doi.org/10.5012/bkcs.2006.27.5.789
  20. Lloyd, P. B.; Swaminathan, M.; Kress, J. W.; Tatarchuk, B. J. Appl. Surf. Sci. 1997, 119, 267. https://doi.org/10.1016/S0169-4332(97)00178-5
  21. Wei, W. Adsorption, Reaction and Interfacial Electronic Structures of Aromatic Molecules on Single Crystal Surfaces; Ph. D. thesis, Univ. of Texas at Austin, 2005.
  22. Cremer, P. S.; Su, X.; Shen, Y. R.; Somorjai, G. A. J. Am. Chem. Soc. 1996, 118, 2942. https://doi.org/10.1021/ja952800t
  23. Sohn, Y.; Wei, W.; White, J. M. J. Phys. Chem. C 2008, 112, 18531. https://doi.org/10.1021/jp806067k