中华医学超声杂志

应用化学 ›› 2010, Vol. 27 ›› Issue (07): 787-791.DOI: 10.3724/SP.J.1095.2010.90577

• 研究论文 • 上一篇    下一篇

木质素-四乙烯五胺负载钯配合物的制备及对Suzuki反应的催化性能

薛蔓1,2,张士真3,吴玉峰1,刘剑1,崔元臣1*   

  1. (1.河南大学特种功能材料重点实验室 开封 475004；2.开封教育学院 开封;
    3.商丘技师学院 商丘)
  • 收稿日期:2009-08-31 修回日期:2009-11-10 出版日期:2010-07-10 发布日期:2010-07-10
  • 通讯作者: 崔元臣，男，本科，教授; E-mail:yccui@henu.edu.cn; 研究方向：功能高分子的制备与应用
  • 基金资助:
    河南省自然科学基金资助项目（611020500）

Synthesis of Lignin-tetraethylenepentamine Palladium Complex and Its Catalytic Properties for Suzuki Reaction

XUE Man1,2, ZHANG Shi-Zhen3, WU Yu-Feng1, LIU Jian1, CUI Yuan-Chen1*   

  1. (1.Key Laboratory for Special Functional Materials,Henan University,Kaifeng 475004;
    2.Kaifeng Institute of Education,Kaifeng;
    3.Shangqiu Technician School,Shangqiu)
  • Received:2009-08-31 Revised:2009-11-10 Published:2010-07-10 Online:2010-07-10

PDF

2063

被引次数

1 | 2

摘要：

采用较温和的Mannich反应制得了木质素-四乙烯五胺，并以其为载体通过简单的方法制备了木质素-四乙烯五胺负载钯催化剂。 利用TG、DTA和XPS等测试技术对其结构进行了表征。 该催化剂对碘苯与四苯硼钠的Suzuki反应有较好的催化活性，在80 ℃下空气氛围中反应8 h，以V(DMF)∶V(H2O)=2∶1混合液为溶剂，NaHCO3为碱时，反应产率高达90.2%。 催化剂可以通过简单的方法回收但重复使用性能有一定下降，重复使用4次后产率降至31.3%。

关键词: 木质素, 钯, 负载型催化剂, Suzuki反应

Abstract:

Lignintetraethylenepentamine was synthesized from Lignin and tetraethylenepentamine(TEPA) with formaldehyde as a crosslinking agent by Mannich reaction. The prepared complex was used as a matrix to support palladium chloride. Lignin-TEPA-Pd complex was characterized by XPS, TG and DTA, which was an efficient catalyst for the Suzuki reaction of iodobenzene with sodium tetraphenylboron. The yield of the product was up to 90.2% when the reaction was carried out at 80 ℃ in air for 8 h with V(DMF)∶V(H2O)=2∶1 mixture as the solvent and NaHCO3 as the base. The catalyst could be separated easily, but the yield of product decreased to 31.3% after 4 times reusage.

Key words: lignin, palladium, supported catalyst, Suzuki reaction

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