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采用软模板法制得具有高度有序介孔孔道结构、高密度—SO3H基团的新型有序介孔炭基固体酸催化剂。通过N2吸附-脱附、X射线衍射、透射电镜、EDX能谱以及酸碱滴定等手段对催化剂进行了表征,考察了炭化温度对介孔炭基固体酸催化剂介孔孔道结构、表面酸性以及催化活性的影响。结果表明,500℃是最适宜的炭化温度,该炭化温度下制备的催化剂介观有序性较好且酸密度较高。所得的催化剂在丙酮与苯酚缩合生成双酚A的反应中表现出明显高于其它3种固体酸催化剂(001×7,D072,无定型炭基固体磺酸)的活性。可见,有序介孔炭基固体酸是一种高效的新型固体酸催化剂,在双酚A领域具有较好的应用潜力。
A novel ordered mesoporous carbon-based solid acid catalyst with highly ordered mesoporous pore structure and high-density-SO3H groups was prepared by soft template method. The catalysts were characterized by N2 adsorption-desorption, X-ray diffraction, transmission electron microscopy, EDX spectroscopy and acid-base titration. The effects of carbonization temperature on the mesoporous pore structure, surface acidity and catalytic Effect of activity. The results show that 500 ℃ is the most suitable carbonization temperature. The catalyst prepared at this carbonization temperature has better mesoscopic order and higher acid density. The obtained catalyst showed a significantly higher activity than the other three kinds of solid acid catalysts (001 × 7, D072, amorphous carbon-based solid sulfonic acid) in the reaction of acetone and phenol to produce bisphenol A. It can be seen that the ordered mesoporous carbon-based solid acid is a highly efficient new solid acid catalyst with good potential for application in the bisphenol A field.