Room-temperature
interaction of n-hexane with ZSM-5 zeolites |
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| Authors: | V Rac Vesna Raki? S Gajinov Vera Dondur Aline Auroux |
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| Institution: | (1) Faculty of Agriculture, Belrade-Zemun, Yugoslavia, 11080, Nemanjina 6;(2) Institut de Recherches sur la Catalyse, Villeurbanne Cedex, France, 69626, 2, Av. Einstein;(3) Institute of General and Physical Chemistry, Belgrade, Yugoslavia, 11000, Studentski trg 12;(4) Faculty of Physical Chemistry, University of Belgrade, Belgrade, Yugoslavia |
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| Abstract: | In this work, room temperature interaction of n-hexane with HZSM-5 (Si/Al=20) and ion-exchanged
samples containing one (CuZSM-5, FeZSM-5 and MnZSM-5) or two transition-metal
cations (Fe,CuZSM-5; Cu,MnZSM-5 and Fe,MnZSM-5) was studied by microcalorimetry
and TPD methods. Both differential heats and the amounts of n-hexane
adsorbed per one unit cell were quantitatively determined. Higher heats of
adsorption and higher amounts of adsorbed gas were found for ion-exchanged
samples than for HZSM-5. The experiments of n-hexane
adsorption on hydrated samples were also performed. The amounts of n-hexane
adsorbed on hydrated ZSM-5 were lower in comparison with dehydrated samples,
while the energies of interaction were similar. |
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| Keywords: | microcalorimetry n-hexane temperature-programmed desorption ZSM-5 |
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