| As a kind of polynuclear inorganic macromolecule compound containing oxo bridge, heterpoly acid were the oxygenic polyatomic acid that coordinated with center atom (P, Si, As,Ge etc.) and coordinating atom (Mo, V, W etc.). There are five species such as Keggin,Dawson, Anderson, Waugh,Silvertong in heterpoly acid assorting by structure of anions. The heterpoly acids have such unique cage structures that are similar with liquid phase. So catalysis can carry from not only the teeth outwards but also in the body and heterpoly acid have good catalyzed activity and selectivity. The heterpoly acid can catalyst as acid catalysis and oxidization. Furthermore heterpoly acid are provided with photoelectricity catalysis and polymerization retardor.As catalysis, heterpoly acid have high price and good solution power in acid alcohol and water. There are some problems about heterpoly acid such as recovery processing, pollute and corrupting equipment. In addition, catalyst performance can't give out for small specific area. Therefore we put heterpoly acid loading on some porous solid carriers to increase specific area. This made for heterogeneous catalysis and heterpoly acid have widely appliance.We prepare heterpoly acid by sol-gel method, and characterize by IR XRD BET. The result show: the heterpoly acids prepared by our lab keep Keggin structure and have good catalyzing performance.We work on two facts for studying catalyzing performance about the heterpoly acid.At first, we watched the catalyzing performance of the heterpoly acid in...
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