摘要
Phenylene-gallosilicates were prepared with the same crystalline structure as their aluminum analogues. The new Ga-Eni Carbon Silicates(Ga-ECS) phases were investigated by X-ray diffraction, scanning electron microscopy, nuclear magnetic resonance and thermogravimetric analysis, which demonstrated that gallium isomorphously replaced aluminum in the framework of the organic-inorganic hybrids similar to the case of classical zeolites. Hybrid ECS materials were obtained with different types of bridged silsesquioxane precursors that maintained the aluminum-silicate nature of the inorganic moiety. This work confirms a new level of crystal chemistry versatility for this class of materials, and demonstrates the possibility to tailor also the inorganic part of the framework by changing the nature of the trivalent heteroatom.
Phenylene-gallosilicates were prepared with the same crystalline structure as their aluminum ana- logues. The new Ga-Eni Carbon Silicates （Ga-ECS} phases were investigated by X-ray diffraction, scanning electron microscopy, nuclear magnetic resonance and thermogravimetric analysis, which demonstrated that gallium isomorphously replaced aluminum in the framework of the organ- ic-inorganic hybrids similar to the case of classical zeolites. Hybrid ECS materials were obtained with different types of bridged silsesquioxane precursors that maintained the aluminum-silicate nature of the inorganic moiety. This work confirms a new level of crystal chemistry versatility for this class of materials, and demonstrates the possibility to tailor also the inorganic part of the framework by changing the nature of the trivalent heteroatom.
出处
《催化学报》
SCIE
EI
CAS
CSCD
北大核心
2015年第6期813-819,共7页
关键词
硅酸盐
扫描电子显微镜
SI
合成
表征
GA
碳
X射线衍射
Eni Carbon Silicates
Hybrid organic-inorganic gallosilicates
Bridged silsesquioxane precursors
Isomorphous substitution
