Study On Synthesis Technology Of Built-in Silica Adsorbents And Mechanism Of Selectivly Separating Flavones

As people's healthy consciousness is continuously improved, many people pay more attention to natural medicine and Chinese traditional herb medicine. Flavonoid with high specific curatorial value is one familiar natural medicine in plants, which so many people have devoted to researching. The adsorbents using at present are difficult to separate single component of faviones so that the new adsorbents are found to separate it.According to MIT, the paper studied the synthesis technology of built-in silica adsorbents by MIT by these following steps: the hydrolyzation of organic silane, gel-aging, removal of template. Flavonoid(rutin and soybean isoflavones) were used as the templates in these steps. The optimum preparation conditions of preparing the built-in silica adsorbents were selected.The factors which affected the elution of template, the adsorption capacity and the ratio of desorption were discussed. The proper conditions of adsorption and desorption were obtained. By means of many experiments, the capability of selective separation was studied. The results of TEM show symmetrical distribution of the pores that match to the template molecules. The results of BET indicate that the built-in silica adsorbents have high specific surface, and those of FTIR indicate that some bonds were changed.The built-in silica adsorbents that selectively separate flavonoid are successfully prepared. The processes of molecular imprinting and recognition in aqua are achieved with favorable purpose. Molecular Imprinting Polymer (MIP) extends from organic polymer to inorganic polymer.