Ekukhiqizeni nasekuphileni, ijeli ye-silica ingasetshenziswa ukomisa i-N2, umoya, i-hydrogen, igesi yemvelo [1] njalonjalo. Ngokusho kwe-asidi ne-alkali, i-desiccant ingahlukaniswa ibe: i-acid desiccant, i-alkaline desiccant kanye ne-desiccant engathathi hlangothi [2]. Ijeli ye-silica ibonakala iwumshini wokomisa ongathathi hlangothi obonakala sengathi womile i-NH3, i-HCl, i-SO2, njll. Nokho, ngokombono wesimiso, ijeli ye-silica yakhiwa ukuphelelwa amandla kwamanzi kwe-intermolecular ye-orthosilicic acid, umzimba oyinhloko yi-SiO2, futhi ubuso bucebile ngamaqembu e-hydroxyl (bheka Umfanekiso 1). Isizathu esenza ukuthi ijeli ye-silica ikwazi ukumunca amanzi ukuthi iqembu le-silicon hydroxyl elingaphezulu kwejeli ye-silica lingakha amabhondi e-hydrogen e-intermolecular nama-molecule amanzi, ngakho-ke lingakhanga amanzi futhi ngaleyo ndlela lidlale indima yokomisa. Ijeli ye-silica eshintsha umbala iqukethe ama-cobalt ion, futhi ngemva kokuba amanzi e-adsorption efinyelela ukugcwala, ama-cobalt ion ejeli ye-silica eshintsha umbala abe ama-hydrated cobalt ion, ukuze ijeli ye-silica eluhlaza ibe pink. Ngemuva kokushisa ijeli ye-silica e-pink ku-200 ℃ isikhathi esithile, isibopho se-hydrogen phakathi kwejeli ye-silica nama-molecule wamanzi siyaphuka, futhi ijeli ye-silica eguquliwe izophenduka ibe luhlaza okwesibhakabhaka futhi, ukuze umdwebo wesakhiwo se-silicic acid nejeli ye-silica isetshenziswe kabusha njengoba kuboniswe kuMfanekiso 1. amabhondi e-hydrogen e-intermolecular ne-NH3 ne-HCl, njll., futhi kungase kungabi khona indlela yokwenza njenge-desiccant ye-NH3 ne-HCl, futhi awukho umbiko ofanelekile ezincwadini ezikhona. Yaba yini imiphumela? Lesi sihloko senze ucwaningo lokuhlola olulandelayo.
Isikhathi sokuthumela: Nov-14-2023
