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
