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首页> 外文期刊>Journal of Applied Polymer Science >Kinetic Monitoring Methods for Ethylene Coordination Polymerization in a Laboratory Reactor
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Kinetic Monitoring Methods for Ethylene Coordination Polymerization in a Laboratory Reactor

机译：实验室反应器中乙烯配位聚合的动力学监测方法

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摘要

The kinetic performance of metallocene type catalysts as well as their instantaneous activity is determined on line by two independent methods in the semi-batch polymerization of ethylene via metallocenes. The first-principle basis of both methods is described and guidelines for their implementation at a laboratory scale reactor are offered. Polymerization tests were conducted with two heterogenized metallocene catalysts showing that the direct method (based on ethylene flow measurement) and the calorimetric method (based on energy balances and developed here) report equivalent high quality information. This last method can be readily used by the chemical practitioner as the notions and tools required for its implantation are easily grasped; it also has the advantage of requiring a low cost instrumentation (only thermocouples), whereas the direct method needs a relatively more sophisticated equipment (mass flow meter).
机译：在通过金属茂的乙烯的半间歇聚合中，通过两种独立的方法在线测定金属茂型催化剂的动力学性能及其瞬时活性。描述了这两种方法的第一性原理，并提供了在实验室规模的反应器中实施这些方法的指南。用两种均相的茂金属催化剂进行了聚合测试，结果表明直接法（基于乙烯流量测量）和量热法（基于能量平衡并在此处开发）报告了等效的高质量信息。化学从业人员可以很容易地使用后一种方法，因为很容易掌握其植入所需的概念和工具。它还具有需要低成本仪器（仅热电偶）的优点，而直接方法需要相对更复杂的设备（质量流量计）。

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