摘要
通过对双模型介孔分子筛(BMMS)的改性,用疏水性的基团将介孔分子筛表面的羟基硅烷化,利用N端基和钴原子的配位将钴卟啉嫁接到介孔分子筛孔道中,得到了分散度高、热稳定性好的有机无机复合双模型介孔分子筛;并通过XRD、BET、TG-DTA等手段对制备的样品进行了表征。结果表明,硅烷化将钴卟啉成功地接枝在BMMS的表面,使钴卟啉得到较好的分散,提高了钴卟啉的热稳定性,且仍保持了BMMS的结构。制备的钴卟啉/BMMS催化剂将用于环己烷和环己烯的非均相催化氧化。
A novel bimodal mesoporous molecular sieve(BMMS) supported Co( Ⅲ ) complex with the nitrogen donor ligand porphrins was prepared at room temperature via grafting method. The resulted host/guest compounds were characterized by XRD, nitrogen adsorption and TG-DTA. The results indicated that structure of BMMS was retained, and cobalt-porphyrin was highly dispersed in the pore surface of the modified BMMS. In addition, TG-DTA data suggested that the stability of cobalt-porphyrin was also enhanced by the grafting method for BMMS. The catalytic behavior of the BMMS-supported Co (Ⅲ) will be investigated by oxidation of cyclohexane and cyclohexene.
出处
《石油学报(石油加工)》
EI
CAS
CSCD
北大核心
2006年第B10期272-274,共3页
Acta Petrolei Sinica(Petroleum Processing Section)
基金
北京市自然科学基金项目(2063024)资助
关键词
双模型介孔分子筛(BMMS)
改性
钴卟啉
嫁接
bimodal mesoporous molecular sieve(BMMS)
modification
cobalt-porphyrin
graft