Nnyocha gbasara oke ojiji nke silica gel desiccant

N'ime mmepụta na ndụ, enwere ike iji jel silica kpọọ nkụ N2, ikuku, hydrogen, gas eke [1] na ndị ọzọ. Dịka asịd na alkali si kwuo, enwere ike kewaa desiccant n'ime: acid desiccant, alkaline desiccant na neutral desiccant [2]. Gel silica yiri ka ọ bụ igwe nkụ na-anọpụ iche nke yiri ka ọ na-akpọ nkụ NH3, HCl, SO2, wdg. Agbanyeghị, site n'echiche isi, jel silica mejupụtara mmiri mmiri intermolecular atọ nke orthosilicic acid molecules, isi ahụ bụ SiO2, elu ahụ dịkwa ọtụtụ hydroxyl (lee Foto 1). Ihe kpatara jel silica ji enweta mmiri bụ na otu silicon hydroxyl dị n'elu jel silica nwere ike ịmepụta njikọ hydrogen intermolecular na molecules mmiri, yabụ ọ nwere ike itinye mmiri ma si otú a rụọ ọrụ nkụ. Gel silica na-agbanwe agba nwere ion cobalt, mgbe mmiri adsorption ruru njupụta, ion cobalt dị na jel silica na-agbanwe agba na-aghọ ion cobalt mmiri mmiri, nke mere na jel silica na-acha anụnụ anụnụ na-aghọ pink. Mgbe ọ kpochara jel silica pink na 200℃ ruo oge ụfọdụ, njikọ hydrogen dị n'etiti jel silica na molekul mmiri na-agbaji, jel silica agba ya ga-agbanwekwa acha anụnụ anụnụ ọzọ, nke mere na eserese nhazi nke silicic acid na jel silica nwere ike iji ya mee ihe ọzọ dịka egosiri na Foto 1. Ya mere, ebe ọ bụ na elu jel silica bara ụba na otu hydroxyl, elu jel silica nwekwara ike ịmepụta njikọ hydrogen dị n'etiti molekul na NH3 na HCl, wdg, ọ nweghịkwa ụzọ isi mee ihe dị ka ihe na-ekpo ọkụ nke NH3 na HCl, ọ dịghịkwa akụkọ dị mkpa na akwụkwọ ndị dị ugbu a. Gịnịzi bụ nsonaazụ ya? Onye a emeela nchọpụta nnwale ndị a.