
doi: 10.1007/bf02065693
The relation between the activity and selectivity of a π-allyl-nickelalumina-silica gel catalyst system and the SiO2 content of the support has been studied. Higher activity of systems containing mixed gels was ascertained. The selectivity to poly (1,4-cis-butadiene) increases, whereas that to the 1,4-trans isomer markedly decreases with increasing SiO2 concentration. Over catalysts based on either Al2O3 or SiO3, only poly-(1,4-trans-butadiene) (97%) was obtained.
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