تهيه و اصلاح بنزيل سيليكا بعنوان زرين تعويض گر كاتيوني و مطالعه اسپكتروفوتومتري آن

The synthesis of Benzylsilica in which the organic group is bound to silica surfaces through a carbon - silicon bond is described. The preparation involves the activation of silanol groups and the chlorination of active silanol groups, the reaction of this product with Benzyllithum and finally sulfonation and Hydrolyis. The modification of Benzylsilica in which sulfonation and Hydrolyis which introduce -SO3H groups is presented. in this study, the capacity of sulfobenzylsilica was measured as cationic Exchanger resin. one useful method for study and treatment of product was based on the mixing of a liquid with the dried solid product that having a refractive index similar to that of silica, so that UV transmission spectra could be obtained.