摘要
用T型沸石/聚酰胺酸悬浊液浸渍聚氨酯泡沫,然后在900℃下热处理制备原位担载的T型沸石/泡沫炭复合材料。用SEM,XRD和物理吸附仪等设备对所得样品进行表征。结果表明:所得复合材料为分级结构整体块状材料,泡沫炭基体的大孔平均尺寸约为500μm;泡沫炭孔壁表面均匀镶嵌了大量沸石分子筛。所得复合材料的微孔孔径分布集中于0.45nm左右,比表面积达到328m2/g。复合材料中沸石分子筛自身的结构特性和化学组成保持不变。
T-type zeolite/carbon foam composites with a hierarchical structure were prepared by carbonizing polyurethane foam impregnated with a mixture of polyamic acid and T-type zeolite.The carbonization was conducted at 900℃ in flowing nitrogen.The as-prepared composites were examined using SEM,XRD and N2 adsorption techniques.It has been found that the foam-like monolith consists of open cells with an average size of ca.500μm,and T-type zeolites are anchored on the cell walls of the foam with their structure remaining unchanged even after heat treatment at 900℃.The zeolite/CF composites with a BET surface area of 328m^2/g are microporous,and have a narrow pore size distribution centered at 0.45nm.
出处
《新型炭材料》
SCIE
EI
CAS
CSCD
北大核心
2010年第5期321-324,共4页
New Carbon Materials
基金
国家自然科学基金(50972022,20836002,20725619,90610003)
国家高技术研究发展计划(863)资助项目(2009AA052318-2)~~
关键词
沸石
泡沫炭
分级结构
复合材料
制备
Zeolite
Carbon foam
Hierarchical structures
Composite
Synthesis
