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  • density of valence states  (1)
  • solvated platinum atoms  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Porous Pt/γ-Al2O3 catalytic membrane reactors prepared using mesitylene solvated Pt atoms (1993)
    Springer
    Catalysis letters 20 (1993), S. 287-297 
    Details
    ISSN: 1572-879X
    Keywords: Membrane reactors ; inorganic membranes ; organic precursors ; solvated platinum atoms ; benzene hydrogenation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The opportunity of using mesitylene solvated Pt atoms for the deposition of Pt catalyst on inorganic membranes is shown. The catalytic activity of the membrane reactor has been tested using the hydrogenation of benzene as model reaction. The performance of the membrane reactor has been compared with that of a conventional packed bed using γ-Al2O3 powder impregnated with Pt. The effect of the feeding configuration has been investigated, and the results show a membrane effect due to the different degrees of accessibility of pores of different size. For alumina powder we have obtained an activation energy of 12.9 kcal/mol, which well agrees with the data reported in literature. The membrane reactor, instead, exhibited an activation energy ca. 60% lower. The preliminary porometry results have shown a slight effect of the platinum deposition process on membrane permeability.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00769301
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  • 2
    Electronic Resource
    Electronic Resource
    Relation between plasmons and ion-induced damaging in cellulosic derivatives (1998)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 36 (1998), S. 319-323 
    Details
    ISSN: 0887-6266
    Keywords: cellulose polymers ; ion beam irradiation ; electron energy loss spectroscopy ; density of valence states ; Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: On the basis of the Brandt-Ritchie model, we use the calculated Valence Band Density Of electronic States to explain the selectivity of the chemical modifications induced by ion irradiation in cellulose nitrate and cellulose acetate. Some consequences pertaining to the characteristics of the valence band structure are deduced with a view to electronic applications. © 1998 John Wiley & Sons, Inc. J Polym Sci B: Polym Phys 36: 319-323, 1998
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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