以间苯二酚-甲醛溶胶和MCM-48原粉制备有序介孔炭分子筛  被引量:1

Synthesis of Ordered Mesoporous Carbons Using Resorcinol-Formaldehyde Sol as the Carbon Source and As-synthesized MCM-48 as the Template

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作  者:王重庆[1] 宋军[1] 姚建峰[1] 李青[1] 张利雄[1] 刘晓勤[1] 陆现彩[2] 

机构地区:[1]南京工业大学化学化工学院材料化学工程国家重点实验室,南京210009 [2]南京大学地球科学系,南京210093

出  处:《无机材料学报》2009年第1期23-28,共6页Journal of Inorganic Materials

摘  要:以含有机模板的介孔纯硅分子筛MCM-48原粉为模板,以间苯二酚(R)-甲醛溶胶为炭源制备了有序介孔炭分子筛.考察了w(R)/w(MCM-48)和w(R)/w(H2O)对合成介孔炭分子筛的影响.产物用N2吸附/脱附、XRD、SEM、TEM和TG等手段进行了表征.结果表明,w(R)/w(MCM-48)和w(R)/w(H2O)对所得到的介孔炭分子筛的有序性和比表面积有较大的影响.优化的w(R)/w(MCM-48)比为0.50~0.65、w(R)/w(H2O)比为0.15~0.35,此时,能形成比表面积大于1125m^2/g、平均孔径在2.2~2.4nm、具有规则介孔结构的炭分子筛,且这种炭分子筛具有高的热稳定性.Ordered mesoporous carbons were synthesized by using as-synthesized MCM-48 as the template and resorcinol (R) -formaldehyde sol as the carbon precursor. By changing the molar ratio of resoreinol (R) to template (w( R)/w( MCM-48 ) ) and resoreinol (R) to water( w ( R)/w ( H20) ), mesoporous carbons with different porosities were produced. The obtained samples were characterized by N2 adsorption-desorption, X-ray diffraction, scanning electron microscopye, transmission electron microscopye and thermogravimetric analysis. It is found that the optimized w( R)/w(MCM-48) and w(R)/w( H2O) ratios are in the rang from 0.50 to 0.65 and from 0.15 to 0.35, respectively, and the resulting ordered mesoporous carbons has BET specific surface areas greater than 1125m^2/g, mean pore sizes from 2.2 to 2.4nm, and high thermal stability.

关 键 词:介孔炭分子筛 MCM-48 间苯二酚 甲醛 

分 类 号:TB332[一般工业技术—材料科学与工程]

 

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