Thermal depolymerization of polystyrene in highly aromatic hydrocarbon medium
Thermal depolymerization of polystyrene in highly aromatic hydrocarbon medium
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DOI：
10.1016/j.jaap.2019.05.001
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发表时间：
2019-09-01
影响因子：
6
通讯作者：
Maksimov, Anton L.
中科院分区：
文献类型：
--
作者：
Dement'ev, Konstantin, I;Palankoev, Timur A.;Maksimov, Anton L.
从聚苯乙烯在高芳烃介质（轻和重循环油）的热解聚的数据已经获得。研究了反应条件对转化率和选择性的影响。在温度500 ℃、蒸汽停留时间2.61 s、聚合物浓度15%的条件下，在轻质循环油中聚合物转化率为93.8%时，苯乙烯的最大产率为84.4%。所获得的苯乙烯产率高于先前在科学文献中报道的。苯乙烯在解聚反应中的高选择性可以通过以下事实来解释：在所研究的反应条件下，在烃介质中苯乙烯二聚体的形成被抑制。
Data from the thermal depolymerization of polystyrene in a highly aromatic hydrocarbon medium (light and heavy cycle oil) have been obtained. The influences of the reaction conditions on the conversion and selectivity have been studied. The maximum yield of styrene obtained in the present work is 84.4% at a polymer conversion of 93.8% in light cycle oil under the following conditions: temperature: 500 degrees C, vapor residence time: 2.61 s, polymer concentration: 15%. The styrene yield obtained is higher than has been previously reported in the scientific literature. The high selectivity of styrene in the depolymerization reaction can be explained by the fact that under the reaction conditions studied, the formation of styrene dimers in the hydrocarbon medium is inhibited.