Yog vim li cas qhov kev ntsuas tshuaj tiv thaiv ntawmsiliconthiab sodium hydroxide tuaj yeem tshaj qhov ntawm silicon dioxide tuaj yeem soj ntsuam los ntawm cov hauv qab no:
Qhov sib txawv ntawm lub zog sib txuas tshuaj lom neeg
▪ Kev sib xyaw ntawm silicon thiab sodium hydroxide: Thaum silicon sib xyaw nrog sodium hydroxide, lub zog sib txuas Si-Si ntawm cov silicon atoms tsuas yog 176kJ / mol. Si-Si sib xyaw tawg thaum lub sijhawm sib xyaw, uas yooj yim dua rau kev tawg. Los ntawm qhov pom ntawm kinetic, qhov kev sib xyaw yooj yim dua los ua.
▪ Kev sib xyaw ntawm silicon dioxide thiab sodium hydroxide: Lub zog sib txuas Si-O ntawm silicon atoms thiab oxygen atoms hauv silicon dioxide yog 460kJ / mol, uas yog qhov siab heev. Nws siv zog ntau dua los rhuav tshem Si-O daim ntawv cog lus thaum lub sijhawm sib xyaw, yog li qhov kev sib xyaw nyuaj heev thiab qhov nrawm ntawm kev sib xyaw qeeb.
Cov txheej txheem sib txawv ntawm cov tshuaj tiv thaiv
▪ Silicon ua rau sodium hydroxide ua haujlwm: Silicon ua rau sodium hydroxide ua ntej los ntawm kev ua rau dej ua hydrogen thiab silicic acid, tom qab ntawd silicic acid ua rau sodium hydroxide ua rau sodium silicate thiab dej. Thaum lub sijhawm ua haujlwm no, qhov ua haujlwm ntawm silicon thiab dej tso tawm cua sov, uas tuaj yeem txhawb kev txav mus los ntawm molecular, yog li tsim kom muaj ib puag ncig kinetic zoo dua rau qhov ua haujlwm thiab ua kom nrawm dua qhov ua haujlwm.
▪ Silicon dioxide ua rau sodium hydroxide ua haujlwm: Silicon dioxide ua rau sodium hydroxide ua haujlwm ua ntej los ntawm kev ua haujlwm nrog dej los tsim silicic acid, tom qab ntawd silicic acid ua rau sodium hydroxide ua rau sodium silicate. Kev ua haujlwm ntawm silicon dioxide thiab dej qeeb heev, thiab cov txheej txheem ua haujlwm feem ntau tsis tso cua sov tawm. Los ntawm qhov pom ntawm kinetic, nws tsis zoo rau kev ua haujlwm sai.
Cov qauv khoom sib txawv
▪ Cov qauv silicon:Siliconmuaj qee cov qauv siv lead ua, thiab muaj qee qhov sib txawv thiab kev sib cuam tshuam tsis muaj zog ntawm cov atoms, ua rau nws yooj yim dua rau cov kua sodium hydroxide los sib cuag thiab cuam tshuam nrog cov atoms silicon.
▪ Cov qauv ntawmsilicondioxide:silicondioxide muaj cov qauv network ruaj khov.SiliconCov atoms thiab cov atoms oxygen raug khi nruj nreem los ntawm cov kev sib txuas covalent los tsim cov qauv siv lead ua kom ruaj khov. Nws nyuaj rau cov tshuaj sodium hydroxide nkag mus rau hauv nws sab hauv thiab kov tag nrho cov silicon atoms, ua rau muaj teeb meem hauv kev teb sai. Tsuas yog silicon atoms ntawm qhov chaw ntawm silicon dioxide particles tuaj yeem teb nrog sodium hydroxide, txwv qhov nrawm ntawm kev teb.
Cov nyhuv ntawm cov xwm txheej
▪ Kev sib xyaw ntawm silicon nrog sodium hydroxide: Nyob rau hauv cov xwm txheej cua sov, qhov nrawm ntawm kev sib xyaw ntawm silicon nrog sodium hydroxide kua yuav raug nrawm dua, thiab feem ntau kev sib xyaw tuaj yeem ua mus zoo ntawm qhov kub siab.
▪ Kev sib xyaw ntawm silicon dioxide nrog sodium hydroxide: Kev sib xyaw ntawm silicon dioxide nrog sodium hydroxide kua qeeb heev ntawm chav tsev kub. Feem ntau, qhov nrawm ntawm kev sib xyaw yuav zoo dua nyob rau hauv cov xwm txheej hnyav xws li kub siab thiab cov kua sodium hydroxide concentrated.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-10-2024