The chloropropylmodified MCM-48 silica was then functionalized with branched PEI by the nucleophilic substitution of the chlorine atom with the primary, secondary, and tertiary amino groups of PEI in THF for 20 h at 70 °C.
第1个回答 2009-04-19
该chloropropylmodified MCM - 48的硅，然后与分支裴功能的亲核取代反应的氯原子的小学，中学，和高等教育氨基酸组裴在THF的20小时在70 °角
