Reaction Kinetics, Mechanisms and Catalysis ( IF 1.8 ) Pub Date : 2020-06-16 , DOI: 10.1007/s11144-020-01804-w Dorota Horová , Jana Nováková , Lenka Pelíšková , Jan Kohout , Jan Šafář , Kateřina Hrachovcová , Věnceslava Tokarová
Iron modified zeolites represent interesting group of catalysts suitable for organic compounds removal from waste streams. In this work the MFI structured catalysts with various Fe contents incorporated by isomorphous substitution were prepared hydrothermally using two methods with different sources of silica and iron. The structure of the catalysts was tested by XRD, contents of Fe were determined by XRF, Fe centers were characterized by UV–Vis spectroscopy, and BET isotherms were used for porosity measurements. Iron silicate MFI catalysts were used in catalytic phenol removal from water by wet peroxide oxidation in batch arrangement. Catalysts with at least 1% of Fe provided full phenol conversion after 5 h of reaction.
中文翻译:
MFI结构硅酸铁的合成及其在湿式过氧化物氧化去除苯酚中的催化性能
铁改性的沸石代表了一组有趣的催化剂,适用于从废物流中去除有机化合物。在这项工作中,使用两种方法使用不同的二氧化硅和铁源,通过水热法制备了具有通过同晶型取代结合的各种Fe含量的MFI结构催化剂。用XRD测试催化剂的结构,用XRF测定铁的含量,用UV-Vis光谱表征铁的中心,并使用BET等温线进行孔隙度测量。硅酸铁MFI催化剂用于间歇式湿式过氧化物氧化从水中除去催化的苯酚。反应5小时后,含有至少1%Fe的催化剂可实现全部苯酚转化。