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K. Czaja, В. Dawidowska, D. Zelent


Studies of alumina as a support of titanium catalyst for low-pressure ethylene polymerization


Polimery 1986, No 10, 389



DOI: dx.doi.org/10.14314/polimery.1986.389

Summary

The effect of alumina treatment with aqueous solutions of hydrochloric acid and ammonium fluoride as well as temperature of its calcination on the activity of Al-Ti/Al2O3 supported organometallic catalyst for ethylene polymerization has been studied. The dependence between the spe­cific surface area of the support and both the kind and concentration of the modifying agent, concentration of OH-groups on Its surface and concentration of active centres with various activities is discussed with reference to the activity of the supported Al-Ti/Al2O3 catalyst. It was demonstrated that there is no simple relationship between the concentration of OH-groups on the support and the activity of the Ti-catalyst.


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