Inorganic silica gel siv

Silica gel tuaj yeem siv los ua tus desiccant thiab tuaj yeem rov siv dua. Silica gel yog cov khoom ntxeem tau nrog qhov sib txawv me me uas tsim los ntawm lub cev qhuav dej ntawm silicic acid gel mSiO2·nH2O. Nws muaj cov qauv qhib qhov ntxeem tau, qhov loj tshwj xeeb ntawm qhov chaw (qhov chaw ntawm ib chav tsev loj), thiab tuaj yeem nqus tau ntau yam khoom. Nws yog ib qho zoo desiccant, adsorbent thiab catalyst cab kuj. Cov nyhuv adsorption ntawm silica gel feem ntau yog lub cev adsorption, uas tuaj yeem rov tsim dua thiab siv dua. Ntxiv cov kua qaub rau cov alkali hlau silicate (xws li sodium silicate) tov rau acidify nws, thiab ces ntxiv ib co ntawm cov electrolyte mus do los ua ib tug silicic acid gel; los yog ntxiv kua qaub los yog Ammonium ntsev kuj tuaj yeem tsim cov kua qaub silicic gels. Cia cov silicic acid gel sawv ntsug li ob peb teev kom nws muaj hnub nyoog, tom qab ntawd ntxuav nws nrog dej kub kom tshem tawm cov ntsev ntsev, qhuav ntawm 60-70 degree thiab qhib nws ntawm li 300 degree kom tau silica gel. Lub silicic acid gel yog tsau rau hauv cov tshuaj cobalt chloride thiab tom qab ntawd qhuav thiab qhib kom tau txais cov xim hloov xim silica gel. Thaum nws siv los ua ib qho desiccant, nws yog xiav ua ntej absorbing dej, thiab tig liab tom qab absorbing dej. Los ntawm kev hloov xim, peb tuaj yeem pom cov qib ntawm kev nqus dej thiab seb nws puas xav tau kev kho dua tshiab. Silica gel kuj tau siv dav hauv chav rov qab, roj av refining thiab catalyst npaj. Silicone kuj tseem siv tau los ua cov ntaub ntawv xov tooj ntawm tes, uas muaj kev poob qis heev.