Yuav Ua Li Cas Dawb Carbon Dub?

Yuav Ua Li Cas Dawb Carbon Dub?

Muaj peb txoj kev tsim khoom tseem ceeb ntawm cov dawbcarbon dub (SiO2):

Thawj yog tshuaj vapor deposition. Peb kuj hu ua pyrolysis, qhuav txheej txheem los yog combustion method. Cov khoom siv raw yog silicon tetrachloride, oxygen (lossis cua) thiab hydrogen, uas yog tsim los ntawm cov tshuaj tiv thaiv kub. Cov qauv tshuaj tiv thaiv yog:

SiCl4 plus 2H2 plus O2=SiO2 plus 4HCl

Txoj kev thib ob: txoj kev los nag kuj hu ua sodium silicate acidification method.Silicayog npaj los ntawm reacting dej iav tov nrog acid los ntawm nag lossis daus, pom, ntxuav, ziab thiab calcination. Cov qauv tshuaj tiv thaiv yog:

Na2SiO3+2H+->dawb carbon dub ntxiv 2Na ntxiv ntxiv H20

Thib peb, txoj kev tshiab no tsuas yog siv cov nonmetallic ores thiab lawv txuas ntxiv ua silicon qhov chaw. Silica tau npaj los ntawm txoj kev los nag. Lub tshuab tseem ceeb yog hloov crystalline silicon dioxide thiab silicate rau hauv amorphous silicon dioxide. Cov ntaub ntawv nyoos feem ntau suav nrog wollastonite, opal, halloysite, olivine, serpentine, kaolin, tawv kaolin, thee gangue, ya tshauv, thiab lwm yam.