新型有序介孔炭基固体酸的制备及其催化双酚A合成

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。

Preparation of Ordered Mesoporous Carbon-Based Solid Acid Catalyst and Its Use for Synthesis of Bisphenol A

The novel ordered mesoporous carbon-based solid acid catalyst, possessing highly ordered mesoporous channel structure, high density of--SO3H groups, was prepared by soft-template method. The catalysts were characterized by N2 adsorption-desorption, X-ray powder diffraction, transmission electron microscopy, EDX spectroscopy and acid-base titration. The effects of carbonization temperature on mesoporous porous structure, surface acidity and catalytic performance of mesoporous carbon-based solid acid catalysts were investigated. The experimental results showed that the optimal carbonization temperature was 500 ℃ and the mesoporous carbon-based solid acid catalyst carbonized under 500 ℃ contained highly ordered mesoporous channel structure and high acid density after sulfonation. The resulting catalyst was applied to the synthesis of bisphenol A from condensation of acetone with phenol and showed significantly higher activity than several solid acid catalysts（001 × 7, D072, Amorphous carbon-based solid acid）. It can be clearly seen that the ordered mesoporous carbon-based solid sulfonic acid catalyst is a novel efficient solid acid catalyst and can be applied to the area of bisphenol A production.