期刊文献+

全氟磺酸功能化碳纳米管的制备及其催化性能 被引量:3

Preparation and catalytic performance of perfluorosulfonic acid-functionalized carbon nanotubes
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摘要 采用全氟磺酸-全氟乙烯共聚物的液相沉积方法制备了全氟磺酸功能化碳纳米管催化剂,利用N2吸附、扫描电子显微镜、透射电子显微镜、傅里叶变换红外光谱以及酸碱滴定等方法对材料的结构和酸性进行了表征,考察了温度和溶剂对催化剂稳定性的影响.结果表明,催化剂在极性和非极性溶液中均十分稳定,并且具有良好的热稳定性,使用温度可达300°C.该催化剂在对苯二酚与叔丁醇的烷基化反应中表现出优异的催化性能,其催化活性与稳定性均高于聚苯乙烯磺酸功能化的碳纳米管催化剂. Perfluorosulfonic acid-functionalized carbon nanotubes were prepared by liquid deposition of the perfluorosulfonic acid-polytetrafluoroethylene copolymer and characterized by H2 adsorption, scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, and acid-base titration. The effects of reaction temperature and the type of solvent were investigated. The results showed that these solid acids are very stable in both polar and non-polar solvents and can maintain their acidity up to 300℃. Higher activity and better stability were observed over these materials in the alkylation of hydroquinone compared with poly(styrene sulfonic acid)-graffed carbon nanotubes.
出处 《催化学报》 SCIE EI CAS CSCD 北大核心 2014年第11期1874-1882,共9页
基金 国家自然科学基金(20773027,20773028和21273043) 上海市科学技术委员会(08DZ2270500)~~
关键词 碳纳米管 全氟磺酸 酸性 稳定性 对苯二酚 叔丁醇 烷基化反应 HIV Pregnant women Epidemiology Analysis
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参考文献23

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共引文献29

同被引文献32

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