《Table 1 Influence of different reaction conditions on polymer properties》

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《Preparation of High Viscosity PAO from Mixed Alpha-Olefins over Metallocene Catalyst》

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Figure 1 shows the conversion of olefins with different carbon numbers（C9=，C=10，and C=11）in mixed alpha-olefins formed during the F-T synthesis under different reaction conditions.The reaction conditions of Figures numbered a，b，c，d，e and f were corresponding to the experiments numbered 1，5，6，9，10 and 13，respectively.The results indicated that although the Zr/olefin mole ratio（“a”and“b”），the Al/Zr mole ratio（“c”and“d”）and the reaction temperature（“e”and“f”）varied and the content of olefins with different carbon numbers was different，while those olefins with different carbon numbers had almost the same conversion at each moment although the overall conversion increased with an increasing reaction time.It implied that the catalytic activity of metallocene catalyst system had the same selectivity for mixed alpha-olefins with similar carbon numbers taking part in this polymerization process.Therefore with regard to the polymerization of mixed alpha-olefins obtained from the F-T synthesis，the three kinds of alpha-olefins with different carbon numbers could be regarded as a whole.Simpler assumptions could be made in studying the macroscopic kinetics and thermodynamics of the polymerization reaction，which was conductive to the industrial scale-up.