OPTIMIZATION OF HEXENE-1 YIELD IN THE COURSE OF OLIGOMERIZATION OF ETHYLENE ON ZIRCONIUM-CONTAINING COMPLEX CATALYSTS

Citation
Pe. Matkovskii et al., OPTIMIZATION OF HEXENE-1 YIELD IN THE COURSE OF OLIGOMERIZATION OF ETHYLENE ON ZIRCONIUM-CONTAINING COMPLEX CATALYSTS, Vysokomolekularnye soedinenia. Seria A, 35(2), 1993, pp. 207-211
Citations number
20
Categorie Soggetti
Polymer Sciences
ISSN journal
05075475
Volume
35
Issue
2
Year of publication
1993
Pages
207 - 211
Database
ISI
SICI code
0507-5475(1993)35:2<207:OOHYIT>2.0.ZU;2-0
Abstract
Analysis of the kinetic model of ethylene oligomerization on zirconium -containing complex catalysts was carried out. The dependence of the m olar fraction of individual higher alpha-olefins N(i) on the number of units in a molecule i of the product is described by the exponential function N(i) = ab(i). The dependence of the mass fraction of hexene-1 (trimer W3) in the products of ethylene oligomerization on the probab ility of chain growth b = k(p)/(k(p) + k(n)M) was found to be extreme, and (W3)max cannot exceed 27 mass %. The dependences W(i) on b for an y i > 3 are similar. The mass fraction of butene-1 (i = 2) increases m onotonously from 0 to 100 mass %, as b decreases from 1 to 0. This mea ns that the selective dimerization of ethylene to butene-1 can be perf ormed. At the same time hexene-1 and other alpha-olefins cannot be obt ained selectively by the methods of catalytic trimerization and oligom erization of ethylene, respectively. Experimental data are present whi ch confirm the theoretical estimations.