Assembly of Mesoporous Composites and Their Potential Applications as Thermal Materials
Mesoporous materials consist of a wide range of group such as mesoporous silica and mesoporous carbon, which have various potential applications in thermal materials with low or high thermal conductivity. MCM-41 and SBA-15 mesoporous silica consist of uniform hexagonal, unconnected cylindrical pores with diameters that can be tuned within the range 2-30 nm. Furthermore, mesoporous silica is an ideal host for mesoporous composites with high or low thermal conductivity. Mesoporous silica with different pore sizes or porosity have been prepared. Several heterogenous mesoporous composites have been synthesized and their thermal properties have been investigated. Mesoporous SBA-15 and MCM-41 silica was used as template to support metal nanoparticles(Ag, Cu), conducting polymers (polyaniline, polypyrrole) and synthesize mesoporous carbon with different structures. The synthesized composites were characterized by XRD, nitrogen adsorption-desorption isotherms, HRTEM, FE-SEM and FT-IR spectra. The Equilibrium Molecular Dynamics numerical simulations of thermal conductivity of MCM-41 are also performed in this paper. At the same time, the kinetic method is used to predict the thermal conductivity of MCM-41 for comparison. It turns out that the shell thermal conductivities of MCM-41 distribute within a reasonable range and increases linearly as porosity decreases.
mesoporous silica mesoporous composites thermal properties Equilibrium Molecular Dynamics Kinetic Method
Ge Wang Xiubing Huang Mu Yang Xinxin Zhang Yanhui Feng Congliang Huang
School of Materials Science and Engineering University of Science and Technology Beijing Beijing, Ch Thermal Engineering Department University of Science and Technology Beijing Beijing, China, 100083
国际会议
The Ninth Asian Thermophysical Properties Conference(第九届亚洲热物理性能会议 ATPC 2010)
北京
英文
1305-1320
2010-10-19（万方平台首次上网日期，不代表论文的发表时间）