Supported transition metal compounds ☆: Infrared studies on the acidity of Co/ZSM-5 and Fe/ZSM-5 catalysts

作者: Kee H. Rhee , V. Udaya , S. Rao , John M. Stencel , Gordon A. Melson

DOI: 10.1016/0144-2449(83)90179-3

关键词:

摘要: The acidity of Fe/ZSM-5 and Co/ZSM-5 synthesis gas conversion catalysts, prepared by extraction Fe3(CO)12 Co2(CO)8, is investigated infrared characterization chemisorbed pyridine. A portion the total concentration iron or cobalt shown to incorporate into channels ZSM-5. Such incorporation involves ion-exchange during Co2(CO)8 onto ZSM-5 but occurs only upon H2 reduction subsequent extraction. causes a redistribution Bronsted Lewis As result this redistribution, oxidation state ion-exchanged calculated.

参考文章(18)
R. Basila Michael, Infrared Spectra of Adsorbed Molecules Applied Spectroscopy Reviews. ,vol. 1, pp. 289- 378 ,(1968) , 10.1080/05704926808547587
R. T. Obermyer, L. N. Mulay, C. Lo, M. Oskooie‐Tabrizi, V. U. S. Rao, Magnetic, Mössbauer, and catalytic properties of the zeolite catalyst ZSM‐5(Fe) Journal of Applied Physics. ,vol. 53, pp. 2683- 2685 ,(1982) , 10.1063/1.330966
J.M. Stencel, J.R. Diehl, L.J. Douglas, C.A. Spitler, J.E. Crawford, G.A. Melson, Fe3(CO)12 impregnated ZSM-5: Characterization and liquefaction activity Colloids and Surfaces. ,vol. 4, pp. 305- 329 ,(1982) , 10.1016/0166-6622(82)80025-5
C CHANG, Synthesis gas conversion to aromatic hydrocarbons Journal of Catalysis. ,vol. 56, pp. 268- 273 ,(1979) , 10.1016/0021-9517(79)90113-1
Jacques C Védrine, Aline Auroux, Vera Bolis, Pierre Dejaifve, Claude Naccache, Piotr Wierzchowski, Eric G Derouane, Janos B Nagy, Jean-Pierre Gilson, Jan HC van Hooff, Jan P van den Berg, Jillus Wolthuizen, Infrared, Microcalorimetric, and Electron Spin Resonance Investigations of the Acidic Properties of the H-ZSM-5 Zeolite Journal of Catalysis. ,vol. 59, pp. 248- 262 ,(1979) , 10.1016/S0021-9517(79)80029-9
James A. Schwarz, Simultaneous determination of Lewis and Bronsted site densities on silica alumina using infrared techniques Journal of Vacuum Science and Technology. ,vol. 12, pp. 321- 323 ,(1975) , 10.1116/1.568774
Peter A. Jacobs, Eric G. Derouane, Jens Weitkamp, Evidence for X-ray-amorphous zeolites Journal of The Chemical Society, Chemical Communications. pp. 591- 593 ,(1981) , 10.1039/C39810000591
A. Auroux, P. Wierzchowski, P.C. Gravelle, Microcalorimetric evidence of the non-uniform distribution of acid sites in a zsm-type zeolite Thermochimica Acta. ,vol. 32, pp. 165- 170 ,(1979) , 10.1016/0040-6031(79)85104-7