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Influence of Partial Neutralization on Catalytic Activity of Ion Exchange Resin

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    0028273 - UCHP-M 20050021 RIV NL eng J - Journal Article
    Holub, Ladislav - Jeřábek, Karel
    Influence of Partial Neutralization on Catalytic Activity of Ion Exchange Resin.
    [Vliv parciální neutralizace na katalytickou aktivitu ionexů.]
    Journal of Molecular Catalysis A-Chemical. Roč. 231, 1-2 (2005), s. 21-26. ISSN 1381-1169. E-ISSN 1873-314X
    R&D Projects: GA ČR(CZ) GA104/02/1104
    Institutional research plan: CEZ:AV0Z40720504
    Keywords : catalysis * partial neutralization * polymer supports
    Subject RIV: CI - Industrial Chemistry, Chemical Engineering
    Impact factor: 2.348, year: 2005

    Concentration of acid centres in a commercial ion exchanger catalyst was controlled by partial neutralization of sulfonic groups with various primary, secondary and tertiary amines of different molecular size. The effect of the acid centre concentration on catalytic activity of the ion exchangers was tested by measurements of initial reaction rate of reesterification of ethyl acetate with propanol in a CSTR-type reactor. There was found that the slope of the dependence of the catalytic activity on the degree of the resin neutralization and decreases roughly in the order tertiary > secondary > primary.

    Koncentrace kyselých center v komerčním ionexovém katalyzátoru byla měněna parciální neutralizací sulfonových skupin řadou primárnch, sekundárních a terciálních aminů o různé velikosti molekul. Vliv koncentrace kyselých center na katalytickou aktivitu konexi byl testován měřením počáteční rychlosti reakce reesterifikace ethylacetátu propanolem v CSTR reaktoru. Bylo zjištěno, že strmost závislosti aktivity na koncentraci kyselých center závisí na bazicitě aminu.
    Permanent Link: http://hdl.handle.net/11104/0118222

     
     
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