Abstract
The suitability of cw Raman spectroscopy for characterization of mass transport phenomena in connection with heterogeneous chemical processes is demonstrated for the example of the catalytic hydrogenation of acetylene. Temperature and concentration profiles in a model reactor were derived simultaneously from H2 pure rotational lines and from the most intenseQ branches of C2H2 and of C2H4. The temperature dependence of the band contours has been considered; by careful calibration the systematic error of the derived concentration values is limited to less than 2%. The measurements allow the separation of the effects of thermal diffusion and of the reaction.
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References
M. Lapp, C.M. Penney: InAdvances in Infrared and Raman Spectroscopy, Vol. 3, ed. by R.J.H. Clark and R.E. Hester (Heyden, London 1977) pp. 204–261
M.C. Drake, G.M. Rosenblatt:InCharacterization of High Temperature Vapors and Gases, ed. by J.W. Hastie, NBS Special Publication 561 (US Govt. Printing Office, Washington, DC 1979) pp. 609–646
G. Leyendecker, J. Doppelbauer, D. Bäuerle, P. Geittner, H. Lydtin: Appl. Phys. A30, 237 (1983)
G.C. Bond:Catalysis by Metals (Academic Press, London, New York 1962)
G. Webb: InComprehensive Chemical Kinetics, ed. by C.H. Bamford and C.F.H. Tipper. (Elsevier, Amsterdam 1978) p. 50
C.E. Smith, J.P. Biberian, G.A. Somorjai: J. Catal.57, 426 (1979)
A. Amariglio, H. Amariglio: J. Catal.68, 86 (1981)
H.P. Bonzel, H.J. Krebs: Surf. Sci.117, 639 (1982)
G.A. Somorjai: Surf. Sci.89, 496 (1979)
H. Finsterhölzl, H.W. Schrötter, G. Strey: J. Raman Spectrosc.11, 375 (1981)
R. Gaufres: InLaser Raman Gas Diagnostics, ed. by M. Lapp and C.M. Penney (Plenum Press, New York 1974) pp. 15–43
G. Herzberg:Molecular Spectra and Molecular Structure, Vol. 2:Infrared and Raman Spectra of Polyatomic Molecules (Van Nostrand, New York 1945) p. 267
E. Kostyk, H.L. Welsh: Can. J. Phys.58, 534 (1980)
K. Clusius, G. Dickel: Naturwissenschaften26, 546 (1938)
L. Waldmann: Z. Phys.114, 53 (1939)
T.O. Sedgwick, J.E. Smith, Jr.: J. Electrochem. Soc.123, 254 (1976)
J. Bouix, M.P. Berthet, M. Boubehira, J. Dazord, H. Vincent: J. Electrochem. Soc.129, 2338 (1982)
W.G. Breiland, M.J. Kushner: Appl. Phys. Lett.42, 395 (1983)