混配组分对基于KH2PO4/Al2O3催化剂的酚油醚化的影响

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袁博^1,2,3，王泽^1,2,3*，宋文立^1,2，李松庚^1,2

1. 中国科学院过程工程研究所多相复杂系统国家重点实验室，北京 100190 2. 中国科学院大学中丹学院，北京 100049 3. 中国丹麦科研教育中心，北京 100049

收稿日期:2019-03-12修回日期:2019-03-28出版日期:2019-12-22发布日期:2019-12-22
通讯作者:王泽

基金资助:原位供氢条件下生物质水热转化制备液体燃料基础研究

Effect of blending component on etherification of phenolic-oil over KH₂PO₄/Al₂O₃

Bo YUAN^1,2,3, Ze WANG^1,2,3*, Wenli SONG^1,2, Songgeng LI^1,2

1. State Key Laboratory of Multi-Phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China 2. Sino-Danish College, University of Chinese Academy of Sciences, Beijing 100049, China 3. Sino-Danish Center for Education and Research, Beijing 100049, China

Received:2019-03-12Revised:2019-03-28Online:2019-12-22Published:2019-12-22

摘要/Abstract

摘要： 以KH2PO4/Al2O3为催化剂，针对以甲醇为烷基化试剂的酚油醚化体系，研究了5种混配组分(乙酸、甲酸、丙酮、呋喃、乙酸乙酯)对酚油醚化反应规律的影响。结果表明，丙酮对促进烷基酚转化为芳醚的作用效果最强。基于丙酮混配组分，500℃下探究了丙酮质量配比的影响，基于最佳丙酮添加量(50wt%)，进一步考察了温度对反应体系的影响，并进行机理分析。结果表明，丙酮含量不高于70wt%时，液体收率随丙酮含量升高而降低，进一步提高丙酮含量时液体收率基本稳定。各丙酮含量下，液体产物中均未检出邻甲氧基苯酚或其它任何烷氧基酚。较高丙酮含量时烷基酚含量显著降低。丙酮含量为50wt %时，芳醚含量出现极大值(29.06area%)，进一步提高丙酮含量，芳烃及其它组分显著增加，导致产物中芳醚含量降低。随反应温度升高，产物中的芳醚和芳烃含量分别在500和450℃时出现极大值。综合考虑液体收率和产物极性两方面因素，确定该反应体系的最佳反应温度为450℃，丙酮添加量为50wt%，最佳条件下产物中芳醚与芳烃总量达52.90area%。丙酮分子中的羰基与酚系物中的羟基发生作用，分解产生CO2，同时烷基酚与烷氧基酚脱羟基后分别得到芳烃和芳醚两类主要液相产物。

引用本文

袁博王泽宋文立李松庚. 混配组分对基于KH₂PO₄/Al₂O₃催化剂的酚油醚化的影响[J]. 过程工程学报, 2019, 19(6): 1101-1110.
Bo YUAN Ze WANG Wenli SONG Songgeng LI. Effect of blending component on etherification of phenolic-oil over KH₂PO₄/Al₂O₃[J]. Chin. J. Process Eng., 2019, 19(6): 1101-1110.

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