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首页> 外文期刊>Journal of porous materials >Phenol hydroxylation over Fe and Co-loaded mesoporous MCM-48
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Phenol hydroxylation over Fe and Co-loaded mesoporous MCM-48

机译：Fe和Co-Loaded中孔MCM-48过酚羟基化

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摘要

Iron and cobalt incorporated MCM-48 molecular sieves with Si/M=40, 80 and 100 (where M is either iron or cobalt) have been synthesized using tetraethylorthosilicate as the silica source and cetyltrimethylammonium bromide as template under hydrothermal conditions. Characterization of the synthesized materials were done by XRD, SEM, UV-Vis., TGA, N-2 adsorption-desorption and FTIR analysis. The XRD patterns of metal incorporated materials showed well-ordered MCM-48 structure and UV-Vis. study confirmed the sufficient incorporation of the metal ions in the tetrahedral coordination within the framework structure. The catalytic activity and selectivity of these catalysts were studied for liquid phase hydroxylation of phenol using H2O2 as oxidant. Catechol was obtained as major product whereas hydroquinone was obtained as a minor one.
机译：使用四乙酯硅酸盐作为二氧化硅源和甲基三甲基铵溴作为水热条件下的模板，熨烫铁和钴的MCM-48分子筛（其中M是铁或钴）已经合成。合成材料的表征通过XRD，SEM，UV-Vis。，TGA，N-2吸附 - 解吸和FTIR分析。金属掺入材料的XRD图案显示出良好有序的MCM-48结构和UV-Vis。研究证实了金属离子在框架结构内的四面体配位中的充分掺入。研究了这些催化剂的催化活性和选择性，用于使用H 2 O 2作为氧化剂的苯酚的液​​相羟基化。作为主要产物获得的儿茶酚，而氢醌是次要的。

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