PADC-Pd催化剂的制备及对Heck反应的催化性能  

Synthesis of PADC-Pd and Its Catalytic Properties for Heck Reaction

作　　者：刘新明[1] 崔元臣[1] 张磊[1] 赵晓伟[1] 

机构地区：[1]河南大学化学化工学院,开封475001

出　　处：《应用化学》2006年第11期1286-1290,共5页Chinese Journal of Applied Chemistry

摘　　要：以含N、O、S多官能团的螯合树脂PADC与PdC l2作用制得一种新型PADC-Pd催化剂,用XPS、TG和DTA等测试技术对其进行了表征。热分析结果表明,该催化剂在室温至280℃范围内有很好的热稳定性;PADC-Pd在空气气氛中,较少的催化剂用量可有效地催化丙烯酸、苯乙烯与碘苯的Heck芳基化反应,生成取代的反式肉桂酸、1,2-二苯乙烯,在较低的温度下(85℃)催化碘苯与丙烯酸的反应,产率达95%,显示了较高的催化活性。该催化剂经简单过滤洗涤后可重复使用8次,6次后产率仍达81%,在重复使用过程中,随着钯的流失,催化活性逐渐降低。Reaction of a resin PADC containing N, O, and S muhifunctional groups with a PdCl2 solution produced a newtype of PADC-Pd catalyst, and its structure was confirmed with XPS, TG, and DTA. Thermal analysis showsed that the catalyst is stable at up to 280 ℃. PADC-Pd is an efficient catalyst and Heck arylations of acrylic acid or styrene with iodoarenes can be performed in the presence of a small amount of the catalyst in air, and substituted trans-cinnamic acid or trans-stilbene can be obtained. In the presence of PADC-Pd, Heck arylation of acrylic acid with iodobenzene could be carried out efficiently at a low temperature （85 ℃ ） and the yield was 95%, which indicated the high catalytic activity of PADC-Pd. The catalyst could be used repeatedly for 8 cycles after simple washing, and the yield was up to 81% at the 6th cycle. But the catalytic activity decreased with the cycle, which was probably due to leaching of palladium into the solvent.

关 键 词：PADC 钯 负载型催化剂 HECK反应 

分 类 号：O643[理学—物理化学]