功能化氧化石墨烯负载Pd纳米颗粒催化Heck偶联反应

摘要

Pd nanoparticles were immobilized on a graphene oxide( GO) functionalized by 3-(2-aminoethyl)-aminopropyl trimethoxysilane support. The catalyst was characterized by Fourier transform infrared(FTIR), X-ray diffraction, thermal analysis, elementary analysis, and transmission electron microscopy. The catalyst exhibited a superior catalytic performance in Heck coupling reaction, and was applicable to a wide range of substrates. Recycling experiments showed that the catalyst could be easily recovered by simple centrifugation and reused for up to three cycles without losing its activity.%以3-(2-氨乙基)-氨丙基三甲氧基硅烷( NN )功能化氧化石墨烯( GO )负载 Pd 纳米颗粒，得到Pd@GO-NN催化剂，通过红外光谱、X射线衍射、高分辨透射电子显微镜和热重分析对催化剂进行表征，并将该催化剂用于Heck偶联催化反应，表现出优越的催化活性，且拓展到不同的反应底物仍有较好的效果，循环实验表明该催化剂易分离并能循环使用。