Preparation Of Functionalized Mesoporous Materials And Applications

In this work, various functionalized mesoporous materials were prepared and their performance was studied. Mesoporous MxOy-Au/SBA-15 catalysts were synthesized and the influence of different transition metal oxides on their catalytic oxidation properties of CO was investigated; Mesoporous C-SO3H/SBA-15 solid acid was prepared and its catalytic performance in the reaction of acetone and phenol to synthesize Bisphenol A was tested; Hollow mesoporous silica nanospheres were synthesized and the effects of different synthesis conditions on their structures and morphologies were investigated.(1) Four different transitional metals and gold precursor were impregnated into the mesoporous channels of SBA-15, leading to MxOy-Au/SBA-15 catalyst with high surface area after heat treatment. Catalytic capacity of four different catalysts prepared above was tested by carbon monoxide oxidation reaction.(2) Glucose-derived carbon was fixed into the mesoporous channels via hydrothermal method. After further acidification, carbon-silica composite solid acid materials were obtained. It was showed that this kind of solid acid material with well-ordered pore structure had high catalytic efficiency and good recycling ability in the preparation of Bisphenol A.(3) Hollow mesoporous silica nanospheres were synthesized via a dual template method, in which DMEB vesicles formed in aqueous solution were employed as the template of the mesopores and the hollow shell of the template, the size of the sphere and the thickness of the shell were adjustable. The impact of different synthesis conditions on nano-structure and morphology of the nanospheres were also investigated, including the CSS concentration, the silica source, the initial reaction temperature, the temperature effects, etc.