| 用乙酰氯淬灭法测定Ziegler-Natta催化剂的活性中心数 |
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| 引用本文： | 范志强,封麟先,杨士林.用乙酰氯淬灭法测定Ziegler-Natta催化剂的活性中心数[J].高分子学报,1991,0(4):503-507. |
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| 作者姓名： | 范志强 封麟先 杨士林 |
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| 作者单位： | 浙江大学化学系 |
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| 摘 要： |
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| 关 键 词： | Z－N催化剂 乙酰氯 活性中心数 |
| 收稿时间： | 1990-10-18 |
DETERMINATION OF THE NUMBER OF ACTIVE CENTERS ON ZIEGLER-NATTA CATALYSTS BY QUENCHING WITH ACETYL CHLORIDE |
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| FAN Zhi-qiang,FENG Lin-xian,YANG Shi-lin.DETERMINATION OF THE NUMBER OF ACTIVE CENTERS ON ZIEGLER-NATTA CATALYSTS BY QUENCHING WITH ACETYL CHLORIDE[J].Acta Polymerica Sinica,1991,0(4):503-507. |
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| Authors: | FAN Zhi-qiang FENG Lin-xian YANG Shi-lin |
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| Institution: | Department of Chemistry; Zhejiang University; Hangzhou; Post code 310027 |
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| Abstract: | The reactions of Solvay TiCl3-AlR3 (R=C2H5,i-C4H9) catalysts with acetyl chloride were studied. The main reaction, which is much faster than the reactions between A1R3 and CH3COC1, is as follows:It is found that when CH3COC1 was introduced into 1-octene polymerization systems catalyzed by TiCl3-AlR3 for 5-15min, it reacted selectively and completely with the active centers to produce acetyl-ended polymer chains.With CH3COC1 as a quenching agent, the number of active centers in .these polymerization systems were determined by measuring the content of carbonyl in the polymer,and the results consist with those obtained by kinetics-molecular-weight method. |
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