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Heteropoly compounds both acidic and redox properties , in the field of catalysis has wide application ; has a high surface area mesoporous materials can be used as catalysts and adsorbents , countries have carried out extensive research . In this paper, self-made stainless steel reactor, under hydrothermal conditions , with cetyl trimethyl ammonium bromide as template agent , heteropoly acid ( phosphomolybdic acid , phosphotungstic acid ) was synthesized from a two-dimensional layered structure heteropolyacids - surfactant salt . On this basis , TEOS as the silicon source , the use of \Due to high temperature calcination to remove the template agent heteropolyacid anion structure will collapse to form a dense oxide , this paper HCl / EtOH solution was extracted to remove as a template agent cetyl trimethyl ammonium bromide . And products were IR , X- diffraction , transmission electron microscopy , atomic force microscopy, electron microprobe , elemental analysis and surface area measurement were characterized . The results showed that the use of solvent extraction to remove the templating agent , the pore size of the mesoporous material is 30 ~ 40nm, the specific surface area of up to 106 ~ 140m ~ 2 / g, and Keggin structure intact. Additionally, this article by the sol - gel method supported heteropoly acid , also conducted a series of characterization of the discovered after its aperture is about 60nm, specific surface area of ??150 ~ 170m ~ 2 / g. Mesoporous heteropoly compounds in acid catalysis and oxidation catalysis have a good activity .
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