Preparation Of Ordered Mesoporous Carbon And Study On Metal Nanoparticle Loading

Ordered mesoporous carbon has a three-dimensional mesoporous structure and high specific surface area, it can be used as a kind of good catalyst carrier. At present, the main problems of mesoporous carbon is that the preparation conditions have great influence on the formation of order mesoporous structure, and lead to the poor reproducibility. At the same time, effectively controlling the morphology of the mesoporous carbon is realized only in very dilute synthesis system. Once synthesis system with high concentration is used, the resultant products exhibit a morphology of irregularly shaped block, which does not favor the mass application of mesoporous carbon in industry. Therefore, it is very important to systematically investigate the influence of experiment parameters on porous structure and the morphology of mesoporous carbon materials.In this work, by using three block copolymer F127 as soft templates and phenolic resin prepolymer as carbon source, the influence of experiment parameters on the order degree of porous structure and the morphology regularity of mesoporous carbon materials are systematically studied from there processes, including the dissolution and the self-assemble process of F127, formation process of the phenolic resin, and the hydrogen bonding interaction process between F127 and phenolic resin. Results show that the time of F127 dissolution and assemble time, the formation time of phenolic oligomers under 70℃, the interaction time of F127 micelle and phenolic oligomers and the resting-time have great influence on the morphology and porous structure of mesoporous carbon materials. the interaction temperature of F127 micelle and phenolic oligomers mainly affects the morphology and size of mesoporous carbon.Based on the above research, the preparation method for loading nano Pb, Cu oxides on the mesoporous carbon are explored, and the influence of experiment parameters including Pb, Cu source, reaction time, temperature on the even distribution of Pb, Cu nano oxides on mesoporous are investigated. The chemical composition crystal structure and the morphology of the resultant samples are characterized by X-ray diffraction, transmission electron microscope and environmental scanning electron microscope, energy spectrometer, laser granulometer and field emission scanning electron microscopy (Sem).