Kafukufuku pa kukula kwa silika gel desiccant

Pakupanga ndi moyo, gel osakaniza a silika angagwiritsidwe ntchito kuumitsa N2, mpweya, haidrojeni, gasi wachilengedwe [1] ndi zina zotero. Malinga ndi asidi ndi alkali, desiccant ikhoza kugawidwa kukhala: acid desiccant, alkaline desiccant ndi neutral desiccant [2]. Gelisi ya silika ikuwoneka ngati yowumitsa yopanda ndale yomwe imawoneka kuti imawuma NH3, HCl, SO2, ndi zina zotero. Komabe, kuchokera pamalingaliro, gelisi ya silica imapangidwa ndi katatu-dimensional intermolecular dehydration ya orthosilicic acid mamolekyu, thupi lalikulu ndi SiO2, ndipo pamwamba ndi olemera mu magulu a hydroxyl (onani Chithunzi 1). Chifukwa chomwe gel osakaniza a silika amatha kuyamwa madzi ndikuti gulu la silicon hydroxyl pamwamba pa silika gel osakaniza limatha kupanga ma intermolecular hydrogen zomangira ndi mamolekyu amadzi, kotero amatha kutsitsa madzi motero amathandizira kuyanika. Gelisi ya silika yosintha mtundu imakhala ndi ma ion a cobalt, ndipo madzi a adsorption akafika pakuchulukira, ma ion a cobalt mu gelisi yosintha mitundu ya silika amakhala hydrated cobalt ion, kotero kuti gel osakaniza abuluu amakhala pinki. Pambuyo potenthetsa gel osakaniza a pinki pa 200 ℃ kwa nthawi, mgwirizano wa hydrogen pakati pa gel osakaniza ndi mamolekyu amadzi umasweka, ndipo gel osakaniza a silika adzasandulikanso buluu, kotero kuti mawonekedwe a silicic acid ndi gel osakaniza angagwiritsidwe ntchito monga momwe tawonetsera pa Chithunzi 1 intermolecular hydrogen bonds ndi NH3 ndi HCl, etc., ndipo sipangakhale njira yochitira ngati desiccant ya NH3 ndi HCl, ndipo palibe lipoti loyenera m'mabuku omwe alipo. Ndiye zotsatira zake zinali zotani? Nkhaniyi yachita kafukufuku wotsatirawu.