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首页> 外文期刊>Journal of Applied Polymer Science >Polymerization of 1,3-Butadiene Using Neodymium Chloride Tripentanolate-Triethyl Aluminum
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Polymerization of 1,3-Butadiene Using Neodymium Chloride Tripentanolate-Triethyl Aluminum

机译：氯化钕雷公藤酸酯-三乙基铝聚合1,3-丁二烯

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摘要

Neodymium chloride tripentanolate catalysts of the general formula NdCl_3 X nL with n=3,L=1-pentanol (II).2-pentanol (III),and 3-pentanol (IV) were prepared by an alcohol interchange reaction between neodymium chloride n isopro-panolate (I) with pentanols.These NdCl_3 tripentanolates (II-IV) were characterized by gravimetric and elemental analysis.They were evaluated for homopolymerization of 1,3-butadiene using triethyl aluminum as cocatalyst in cyclohexane solvent.The role of positional isomers of pentanols (1,2,and 3) in catalytic activity on conversion,intrinsic viscosity,and microstructure was studied.The neodymium chloride tripentanolate-(III) has high catalytic activity followed by (II) and (IV).The conversions were in-creased with increases in catalyst,cocatalyst concentrations,and temperature,and decreases in intrinsic viscosity values.The microstructure was determined by Fourier transform-infrared spectroscopy (FTIR) and found to have a predominantly cis-1,4 structure(>99%),which was marginally influenced by variavtion in cocatalyst concen-tration and temperature.
机译：通过氯化钕与氯化钕之间的醇交换反应制备了通式为NdCl_3 X nL，n = 3，L = 1的戊醇（II），2-戊醇（III）和3-戊醇（IV）的氯化钕戊戊酸酯催化剂用重量和元素分析法对这些NdCl_3戊醇化物（II-IV）进行了表征，并用三乙基铝作为助催化剂在环己烷溶剂中评估了它们对1,3-丁二烯的均聚作用。研究了戊醇（1,2，and 3）的催化活性对转化率，固有粘度和微观结构的影响。氯化三戊醇钕（III）具有较高的催化活性，其次是（II）和（IV）。 -随着催化剂，助催化剂浓度和温度的增加而增加，并且固有粘度值降低。通过傅里叶变换红外光谱法（FTIR）测定其微观结构，发现其主要为顺式1,4结构（> 99％） ，w助催化剂浓度和温度的变化会稍微影响到希氏。

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