Abstract
Two 0.1 wt% Pt-porous glass catalysts have been characterized: mesopores formed by finely dispersed colloidal silica inside a macroporous glass, and micropores defined by the porous glass itself. Introducing the so-called range order length parameter L, chord length analysis for L = 5 nm yields specific structure parameters of the metal particles inside both catalyst supports (dispersion, specific metal surface areas, basic arrangement, size distribution and volume fraction). The pore size available basically differs with both pore systems. In the one case an unlimited three-dimensional growth, and, in the other one a limited two-dimensional growth of small Pt-crystallites have been detected. The corresponding particle size distributions f(d) and f(H) have been determined.
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Z. Konya, V.F. Puntes, I. Kiricsi, J. Zhu, P. Alivisatos and G.A. Somorjai, Catal. Lett. 81 (2002) 137.
A.G. Boudjahem, S. Monteverdi, M. Mercy, D. Ghanbaja and M.M. Bettahar, Catal. Lett. 84 (2002) 115.
F.B. Rasmussen, A.M. Molenbroek, B.S. Clausen and R. Feidenhans, J. Catal. 190 (2000) 205.
G. Bergeret and P. Gallezot, in: Handbook of Heterogeneous Catalysis, Vol. 2, eds. G. Ertl, H. Knözinger and J. Weitkamp, Wiley-VCH, Weinheim, 1997 pp. 439-464.
T. White, P. Kirlin, K. Gould and H. Heinemann, J. Catal. 25(1972) 407.
V.N. KolomiichukReact. Kinet. Catal. Lett. 20(1982) 123.
W. Gille, D. Enke and F. Janowski, J. Phys. Chem. Solids. (in press).
Porod G., in: Small-Angle X-ray Scattering, eds. O. Glatter and O. Kratky (Academic Press, London, 1982) p. 34.
Feigin L.A. and Svergun D.I. Structure Analysis by Small-Angle X-Ray and Neutron Scattering (Plenum, New York, 1987) p. 107.
W. Gille, D. Enke and F. Janowski, J. Porous Mater. 8(2001) 111.
D. Enke, K. Otto, F. Janowski, W. Heyer, W. Schwieger and W. Gille, J. Mater. Sci. 36(2001) 2349.
Jeulin D. Image Anal. Stereol. 21 (Suppl. 1) (2002) S31.
A. Delarue and D. Jeulin, Image Anal. Stereol. 20(2002) 181.
W. GilleWaves Random Media 12(2001) 85.
A. RosiwalVerh. K.K. Geol. Reichsanst. 5(1898) 143.
Kittel C., Introduction to Solid State Physics (John Wiley and Sons, Inc., New York, 1973).
Sing K.S.W. and Rouquerol J., in: Handbook of Heterogeneous Catalysis, Vol. 2, eds. G. Ertl, H. Knözinger and J. Weitkamp (VCH Weinheim, 1997) p. 427.
Janowski F. and Enke D., in: Handbook of Porous Solids, eds. F. Schüth, K.S.W. Sing and J. Weitkamp (VCH Weinheim, 2002) p. 24.
I.S. Fedorova and P.W. Schmidt, J. Appl. Cryst. 11(1978) 405.
W. GilleParticle and Particle Syst. Charact. 12(1995) 123.
Gille W., in: X-Ray Investigations of Polymer Structures II, ed. A. Wlochowicz Sczirk, Poland, Proc. of SPIE 4240 (2000) 14, Washington.
S. CiccarielloJ. Appl. Cryst. 24(1991) 509.
S. Pikus and E. Kobylas, S. Ciccariello, J. Appl. Cryst. (in press).
B. Deme and D. Marchal, J. Appl. Cryst. (in press).
Stoyan D. Image Anal. Stereol. 21 (Suppl. 1) 2002 S41.
W. GilleMater. Chem. Phys. 77(2002) 612.
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Gille, W., Enke, D., Janowski, F. et al. Platinum Dispersion Analysis Depending on the Pore Geometry of the Support. Catalysis Letters 93, 13–17 (2004). https://doi.org/10.1023/B:CATL.0000016940.07273.c3
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DOI: https://doi.org/10.1023/B:CATL.0000016940.07273.c3