Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
권호 표지
DOI QR코드

DOI QR Code

Rexonstruction of Pd Particles Supported on Silica in the Pressure of CO as Studied by Carbon-13 NMR

  • Published : 1998.09.20
Download PDF
⟨ Previous Next ⟩

Abstract

The >$^13C$ NMR spectrum of >$^13CO$ adsorbed on Pd particles varies dramatically depending on dispersion. The spectrum of highly dispersed Pd particles supported on silica is a powder pattern ∼800 ppm wide with a first moment of 410 ppm. A low dispersion sample has a motionally narrowed line centered at 750±30 ppm and only ∼85 ppm full width at half height (FWHH). Over several years, high dispersion samples show an increase in the intensity near 750 ppm. These observations are interpreted as an increase of mobile bridging CO on high dispersion Pd surfaces of particles which resulted from smoothing of the metal particle surfaces in the presence of CO.

Keywords

References

  1. Heterogeneous Catalysis in Practice Satterfield, C. N
  2. Catalysis Science and Technology v.3 Vannice, M. A;Anderson, J. R(ed.);Boudart, M(ed.)
  3. J. hys. Chem v.92 Duncan, T. M;Root, T. W
  4. J. Phys. Chem v.94 Zilm, K. W;Bonneviot, L;Haller, G. L;Han, O. H;Kermarec, M
  5. J. Phys. Chem v.97 Becerra, L. R;Slichter, C. P
  6. Ph. D. Thesis, University of Illinois, Urbana-Champaign Becerra, . R
  7. J. Phys. Chem v.94 Zilm, K. W;Bonneviot, L;Hamilton, D. M;Gretchen, W. G;Haller, G. L
  8. J. Phys. Chem v.95 Anderson, S. L;Mizushima, T;Udagawa, Y
  9. Catal, lett v.305 Gaussmann, A;Kruse, N
  10. J. Catal v.127 Zhang, Z;Chen, H;Sheu, L. L;Sachtler, W. M. H
  11. J. Catal v.124 Hicks, R. F;Qi, H;Kooh, A. B;Fischel, L. B
  12. J. Chem. Phys v.89 He, J. W;Norton, P. R
  13. Surface Science v.255 Sander, M;Imbihl, R
  14. Nature v.313 Galway, A. K;Gray, P;Griffiths, J. F;Hasko, S. M
  15. Phys. Rev. Lett v.63 Gritsch, T;Coulman, D;Behm, R. J;Ertl, G
  16. Progress in Surface Science v.30 Somorjai, G. A;Van Hove, M. A
  17. Progress in Surface Science v.9 Flytzani-Stephamophulos, M;Schmidt, L. D
  18. J. Mol. Catal v.25 Van't Blik, H. F. J;Van Zon, J.B. A. D;Koningsberger, D. C;Prins, R
  19. J. Phys. Chem v.87 Van't Blik, H. F. J;Van Zon, J. B. A. D;Huizinga, T;Vis, J. C;Koningsberger, D. C;Prins, R
  20. J. Phys. Chem v.95 Ballinger, T. H;Yates Jr., J. T
  21. J. Phys. Chem v.93 Dictor, R;Roberts, S
  22. J. Am. Chem. Soc. v.107 Van't Blik, H. F. J;Van Zon, J. B. A. D;Huizing, T;Vis, J. C;Koningsberger, D. C;Prins, R
  23. J. PHys. Chem v.89 Solymosi, F;Pasztor, M
  24. J. Phys. Chem v.90 Solymosi, F;Pasztor, M
  25. J. Phys. Chem v.91 Basu, P;Panayotov, D;Yates Jr., J. T
  26. J. Phys. Chem v.95 Paul, D. K;Yates Jr., J. T
  27. J. Phys. Chem v.94 Paul, D. K;Ballinger, T. H;Yates Jr.,J. T
  28. J. Phys. Chem v.94 Mizushima, T;Tohji, K;Udagawa, Y
  29. J. Catal v.15 Solymosi, F;Rasko, J
  30. J. Phys. Chem v.95 Anderson, S. L;Mizushima, T;Udagawa, Y
  31. J. Catal v.39 Boudart, M;Heang, H
  32. Principles of Magnetic Resonance(3rd Ed.) Slichter, C. P
  33. J. magn. Reson v.14 Stejskal, E. O;Schaefer, J
  34. A Dictionary of Concepts in NMR Homans, S. W
  35. Phys. Rev. Lett v.58 Shore, E. S;Ansermet, J. P;Slichter, P. C
  36. Principles of High Resolution in NMR in Solids(2nd Ed.) Mehring, M
  37. J. Phys. Chem v.93 Sheu, L. L;Karpinksi, Z;S achtler, M. H