| Ordered mesoporous metal oxides with high surface have already attracted much attention because of their numerous potential applications. In contrast to mesoporous silica materials, metal oxides mesoporous often show their special properties such as the different composition, structure, and these metal oxides reveal a large amount of potential applications in catalysis, optics, electrics, magnetism et al. A great numbers of mesoporous materials with the different composition, structure, pore size and morphology have been obtained through the different methods.It is well known that mesoporous metal oxides have a vast application prospect. This paper discusses the synthesis of mesoporous metal oxides and the application of that in catalyst support and adsorbent. The contents and contributions as follows:(1) High ordered mesoporous aluminum OMA were successfully prepared by a sol-gel process when aluminum iso-propoxide as aluminum source, EO20PO70ED20 (P123) as templating agents and hydrochloric acid as acid adjustor. That is a breakthrough to chloride ion can steongly coordinate with aluminum ions leading to long-range disordered mesostructures. Inorganic aluminum source (aluminum nitrate and aluminum chloride) was added in the system to replace organic aluminum source. We synthesized spherical mesoporous aluminum which was hexagonal mesostructured. We realized the controllable synthesis of morphology and pore structure for mesoporous aluminum. During synthetic process of ordered mesoporous aluminum doping with La or Ce ions, we prepared high thermal stability amorphous order mesoporous aluminum. In our work, we find that both rare earth doping can effectively stabilize the amorphous walls of alumina mesostructures, further more, as the results shows the modification of La for improving the thermal stability is more effective than Ce.(2) Catalysts V2O5/OMA and NH4VO3/OMA prepared by the vacuum impregnation of ordered mesoporous aluminum reveal a local order structure. Catalysts Ni-OMA and Ni/OMA were respectively prepared by the coprecipitation method and vacuum impregnation, Ni-OMA confirm that the hexagonal pore structure of the ordered mesoporous aluminum, which surface area as high was 173.7 m2g-1. Preliminary catalytic tests showed that the ordered mesoporous aluminum prepared in such a way exhibited superior performance in the oxidative dehydrogenation of propane to propylene when they were used as the supports for V and Ni catalysts. It is conceivable that the large pore diameters of the Ni-catalyst and V-catalyst (5.9-11.6nm) can make it easy to discharge the produced propene to the outside of the pores, thus preventing subsequent deep oxidation.(3) Using the ordered mesoporous aluminum as sorbent, the adsorption ability of erichrome black T was studied. The adsorptive capacity of OMA was 313.62 mg/g at room temperature; the sorption reaction can be approximated with a pseudo-second-order kinetics model. The perfect adsorption condition was given and the adsorbed process could be described by Langmuir equation. Using mesoporous spherical as sorbent, the adsorptive capacity was 307.75 mg/g at room temperature; the sorption reaction can be approximated with a pseudo-second-order kinetics model. The adsorbed process could be described by Langmuir equation.(4) Well ordered mesoporous spinel-structured LiMn2O4 has been successfully prepared by annealing the lithiated mesoporous MnO2 at a temperature of 550℃. After calcination to removing the hard template could preserve the mesopous structure of MnO2 during both high temperature heat treatment and chemical lithiation processes. Besides, this preparation of the oedered mesoporous lithium-ion intercalated, such as lithium manganese nickel oxide and lithium manganese cobalt oxide by annealing the lithiated corresponding mesoporous oxides. Furthermore, the strategy presents a new possibility for the synthesis of various nanostructured mixed metal oxides.
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