Qhov sib txawv tseem ceeb ntawm sodium silicate thiab sodium metasilicate yog tias lo lus sodium silicate yog hais txog silicate ntsev ntawm sodium ions whereas sodium metasilicate yog ib hom sodium silicate uas muaj sodium cation thiab SiO 3 2- anion.
Sodium silicate yog lub npe generic (npe npe rau tag nrho cov ionic compounds uas muaj cov tshuaj formula Na2xSiyO 2y+x). Yog li, sodium metasilicate yog ib hom sodium silicate.
Sodium Silicate yog dab tsi?
Sodium silicate yog ib lub npe nrov rau tag nrho cov ionic compounds uas muaj cov tshuaj formula Na2xSiyO 2y+xCov tswv cuab feem ntau ntawm pawg no suav nrog sodium metasilicate, sodium orthosilicate thiab sodium pyrosilicate. Feem ntau, cov anions hauv cov sodium silicates yog cov tshuaj polymeric. Feem ntau, sodium silicates yog cov xim tsis muaj xim, pob tshab cov khoom sib txuas uas muaj xws li cov khib nyiab lossis cov hmoov dawb uas yog soluble hauv dej (tshwj tsis yog rau feem ntau silicon-nplua nuj silicates). Thaum yaj hauv dej, sodium silicates tsim cov tshuaj aqueous alkaline.
Sodium silicates ruaj khov hauv nruab nrab thiab alkaline daws. Thaum lawv nyob hauv cov kua qaub, cov silicate ion zoo li hnov mob nrog hydrogen ions, tsim silicic acid. Cov khoom siv silicic acid no zoo li decompose rau hauv hydrated silicon dioxide gel. Thaum cov hydrated compound no rhuab los tsav tawm hauv dej, nws ua rau ib qho nyuaj, translucent tshuaj uas peb hu ua silica gel (ib hom desiccant).
Muaj ntau txoj hauv kev los tsim cov sodium silicates, nyob ntawm seb hom silicate. Feem ntau, sodium silicate yog tsim los ntawm kev kho cov sib tov ntawm silica, caustic soda, thiab dej nyob rau hauv lub xub ntiag ntawm kub kub. Tsis tas li ntawd, peb tuaj yeem tau txais sodium silicate los ntawm kev yaj silica hauv molten sodium carbonate.
Muaj ntau daim ntawv thov ntawm sodium silicate: raws li cov khoom xyaw hauv cov tshuaj ntxuav tes, ntawv, dej kho, cov ntaub ntawv tsim kho, ua cov dej hauv cov phab ntsa, hauv kev kho hlau, kho tsheb, thiab lwm yam.
Sodium Metasilicate yog dab tsi?
Sodium metasilicate yog ib qho inorganic compound uas muaj cov tshuaj formula Na2SiO3 Nws yog cov khoom tseem ceeb hauv kev lag luam muaj sodium silicate daws. Qhov no yog ib qho ionic compound uas muaj sodium cations thiab polymeric metasilicate anions. Cov ionic compound no yog cov xim tsis muaj xim, crystalline thiab hygroscopic khoom uas yog deliquescent heev. Nws yog soluble hauv dej tab sis tsis soluble hauv cawv.
Daim duab 01: Cov qauv ntawm Sodium Metasilicate
Thaum xav txog kev tsim cov sodium metasilicate, peb tuaj yeem tsim nws los ntawm kev sib xyaw silicon dioxide nrog sodium oxide hauv 1: 1 molar ratio. Ntxiv mus, sodium silicate crystallizes los ntawm ntau yam hydrate daws xws li pentahydrate thiab nonahydrate.
Muaj ntau yam tseem ceeb ntawm kev siv sodium metasilicate suav nrog kev tsim cov silica los ntawm cov tshuaj tiv thaiv ntawm sodium metasilicate thiab acids, tsim cov cement thiab binders, pulp, ntawv, xab npum, xab npum, siv tsheb, qe preservative, crafts, thiab lwm yam.
Qhov txawv ntawm Sodium Silicate thiab Sodium Metasilicate yog dab tsi?
Sodium metasilicate yog hom sodium silicate. Qhov sib txawv tseem ceeb ntawm sodium silicate thiab sodium metasilicate yog tias sodium silicate hais txog cov ionic sib txawv uas yog silicate ntsev ntawm sodium ions whereas sodium metasilicate yog ib hom sodium silicate uas muaj sodium cation thiab SiO 3 2- anion.
Hauv qab infographic qhia txog qhov sib txawv ntawm sodium silicate thiab sodium metasilicate.
Summary – Sodium Silicate vs Sodium Metasilicate
Sodium silicates yog inorganic ionic compounds. Sodium metasilicate yog ib hom sodium silicate. Qhov sib txawv tseem ceeb ntawm sodium silicate thiab sodium metasilicate yog tias lub sij hawm sodium silicate yog hais txog cov sib txawv ionic compounds (silicate ntsev ntawm sodium ions) whereas sodium metasilicate yog ib hom sodium silicate uas muaj sodium cation thiab SiO 3 2- anion.
