| 木质素胺负载钯催化剂的制备及其对Heck反应的催化性能 |
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| 引用本文： | 吴玉锋,张磊,崔元臣,刘降生,杨帅.木质素胺负载钯催化剂的制备及其对Heck反应的催化性能[J].石油化工,2009,38(7):733. |
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| 作者姓名： | 吴玉锋 张磊 崔元臣 刘降生 杨帅 |
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| 作者单位： | 1. 河南大学化学化工学院,河南开封,475001
2. 河南大学化学化工学院,河南开封475001;河南大学天然产物与药物化学研究所,河南开封475001 |
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| 基金项目： | 河南省自然科学基金项目 |
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| 摘 要： | 采用较温和的Mannich反应制得了多乙烯多胺/甲醛修饰的3种木质素胺(木质素-二乙烯三胺、木质素-三乙烯四胺和木质素-四乙烯五胺),并以其为载体通过简单的方法制得了木质素胺负载钯催化剂;用热重-差热分析、X射线光电子能谱对3种催化剂进行了表征,并考察了它们对丙烯酸与芳基卤的Heck反应的催化性能。实验结果表明,在80～130℃下,3种催化剂均能很好地催化丙烯酸与芳基卤的Heck反应,其中木质素-四乙烯五胺负载钯催化剂在氮气氛中(120℃,12h)催化丙烯酸与溴苯的反应,反式肉桂酸的收率高达94.5%,显示出较高的催化活性;3种催化剂均具有较好的重复使用性能。
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| 关 键 词： | 木质素 多乙烯多胺 钯 负载型催化剂 Heck反应 |
Synthesis of Lignin-Amine Supported Palladium Catalysts for Heck Reaction |
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| Wu Yufeng,Zhang Lei,Cui Yuanchen,Liu Jiangsheng,Yang Shuai.Synthesis of Lignin-Amine Supported Palladium Catalysts for Heck Reaction[J].Petrochemical Technology,2009,38(7):733. |
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| Authors: | Wu Yufeng Zhang Lei Cui Yuanchen Liu Jiangsheng Yang Shuai |
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| Abstract: | Three lignin-amine derivatives,including lignin-diethylenetriamine,lignin-triethylene-tetramine and lignin-tetraethylenepentamine,were readily synthesized from polyethylene-polyamine and formaldehyde by Mannich reaction and were used as supports to prepare supported palladium catalysts for Heck reaction of acrylic acid and aryl halides.The catalysts were characterized by TG-DTA and XPS.The Heck reaction could be efficiently catalyzed by all three catalysts at 80-130 ℃ in N2 atmosphere.In particular,a high yield of 94.5% of trans-cinnamic acid was obtained by Heck reaction of acrylic acid with bromobenzene catalyzed by lignin-tetraethylenepentamine supported palladium catalyst when reaction temperature at 120 ℃ and reaction time 12 h in N2 atmosphere.The catalysts could be easily separated and recycled. |
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| Keywords: | lignin polyethylene-polyamine palladium supported catalyst Heck reaction |
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