负载Co介孔分子筛催化热解乙醇制备纳米碳管  

Preparation of carbon nanotubes by ethanol pyrolysis on loaded Co mesoporous molecular sieve

作　　者：张丽[1] 赵谦[2] 纪美茹[2] 贾佳[2] 

机构地区：[1]江苏农林职业技术学院,江苏句容212400 [2]江苏大学化学化工学院,江苏镇江212013

出　　处：《分子科学学报》2013年第1期73-77,共5页Journal of Molecular Science

基　　金：江苏省高校自然科学基金资助项目(09KJD150002)

摘　　要：以硅酸钠为原料,CTAB为模板剂,水热法合成MCM-41介孔分子筛,采用浸渍法制备负载钴的介孔分子筛(Co/MCM-41),并将其作为催化剂,CVD法热解无水乙醇制备CNTs.利用XRD、TEM、比表面积和孔径分布测定和Raman光谱等方法对所合成的介孔分子筛和纳米碳管进行了表征.结果表明:所制备的Co/MCM-41样品具有典型的MCM-41的介孔结构;当热解反应温度为750℃下所制备出的纳米碳管的品质最好.MCM-41mesoporous molecular sieve was synthesized by hydrothermal method using cetyltrimethyl ammonium bromide as template and sodium silicate as raw material, respectively. And Coloaded mesoporous molecular sieve （Co/MCM-41） was prepared by the wet impregnation method with cobalt chloride solution. The chemical vapor deposition method was employed to catalytically synthesize carbon nanotubes （CNTs） using Co/MCM-41 as catalytic template and alcohol as carbon source. The physicochemical properties of the obtained samples were characterized by X-ray diffraction （XRD）, transmission electron microscopy （TEM）, N2 physical adsorption and Raman spectroscopy, respectively. The results show that the Co/MCM-41 sample possesses a typical mesoporous frame-work of MCM-41. The Co/MCM-41 mesoporous molecular sieve with high specific surface area was successfully synthesized under hydrothermal condition. These mesoporous materials have good mesoporous ordering. When the reaction temperature is 750℃, the resulting CNTs are of high quality.

关 键 词：介孔分子筛 纳米碳管 负载 乙醇 催化热解 

分 类 号：O643[理学—物理化学]