摘要
通过简单的外交联法制备了三苯基膦(PPh_3)基微孔骨架聚合物载钯催化剂KAPs-PPh_3-Pd(0),X-射线衍射分析仪(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、N_2吸脱附(BET)等表征测试显示Pd纳米颗粒以4~5 nm尺寸均匀分散在载体骨架中,催化剂表面呈现疏松多孔结构,比表面积能够达到939 m^2/g。通过对碱、溶剂、反应温度等条件参数的控制,该催化剂能够调控催化氯苯的偶联及脱氯反应,产率均能达到90%以上,并且催化剂能够多次循环利用。
PPh3-based microporous skeleton polymer was prepared supported Pd N-Ps catalyst KAPs-PPh3-Pd（0） by a simple external cross-linking method. BET. XRD. SEM. TEM and other characterization showed that Pd nanoparticles in 4-5 nm size evenly dispersed in polymer skeleton, the surface of the catalyst was abundant of porous structure, and the surface area could achieve 939 m2/g. The catalyst could modulating control the reaction in cross-coupling and dechlorination for chlorobenzene though adjust the parameters such as base, solvent and reaction temperature, the yield all could reach above 90%, and the catalyst could be recycled for several times without sharply decrease in activity.
出处
《广州化学》
CAS
2018年第1期1-8,28,共9页
Guangzhou Chemistry
基金
西华师范大学一般培育项目(17C038)
西华师范大学英才科研基金项目(17YC031)
