| 聚苯乙烯的催化裂解研究 |
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| 引用本文： | 刘静,杨宇,周晓东,胡常伟.聚苯乙烯的催化裂解研究[J].化学研究与应用,2009,21(12). |
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| 作者姓名： | 刘静 杨宇 周晓东 胡常伟 |
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| 作者单位： | 绿色化学与技术教育部重点实验室,四川大学化学学院,四川,成都,610064 |
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| 基金项目： | 国家自然科学基金，教育部博士点基金，高等学校优秀青年教师教学科研奖励计划，四川省应用基础基金，四川大学创新基金 |
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| 摘 要： | 由于塑料性质稳定,难以自然降解,其废弃物不仅严重污染环境,更造成了资源浪费.因此,废旧塑料的再资源化对环境保护和可持续发展有着重要意义.废塑料再资源化回收技术是指将废塑料热裂解或催化裂解、回收燃料油和化工原料的技术~(1,2]).
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| 关 键 词： | 聚苯乙烯 催化裂解 苯乙烯单体 再聚 |
Study on the catalytic pyrolysis of polystyrene |
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| Liu Jing,Yang Yu,Zhou Xiao-dong,Hu Chang-wei.Study on the catalytic pyrolysis of polystyrene[J].Chemical Research and Application,2009,21(12). |
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| Authors: | Liu Jing Yang Yu Zhou Xiao-dong Hu Chang-wei |
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| Abstract: | Fe/Al_2O_3,Co/Al_2O_3 and Ni/Al_2O_3 catalysts were prepared by impregnation method.The catalytic pyrolysis catalyzed by Al_2O_3 and the above mentioned catalysts as well as the direct pyrolysis of polystyrene (PS)were investigated comparably.Comparing with direct pyrolysis of PS,a high conversion of PS and a high selectivity of styrene monomer (61.5%)could be obtained over Co/Al_2O_3,furthermore reduced carbon deposition was observed.The selectivity of monomer increased over Fe/Al_2O_3 and Ni/Al_2O_3 while the oil yield decreased.The loading of transition metal enhanced the basicity of Al_2O_3 support,which led to increase of β-chain-breaking and resulted in higher selectivity of styrene monomer (about 60 %)over Fe/Al_2O_3,Co/Al_2O_3 and Ni/Al_2O_3 than that over Al_2O_3.The three catalysts prevented effectively the cross-linking reaction of the newly formed monomers in PS pyrolysis. |
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| Keywords: | polystyrene catalytic pyrolysis styrene monomer cross-linking reaction |
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