- Bayani
- Kwayoyin abubuwa daban-daban suna bambanta ta hanyar fifiko da girman adsorption, don haka ana kiran hoton "Sive molecular".
- Molecular sieve (kuma aka sani da roba zeolite) wani silicate microporous crystal.Tsarin kwarangwal ne na asali wanda ya ƙunshi silicon aluminate, tare da cations na ƙarfe (kamar Na +, K +, Ca2 +, da sauransu) don daidaita ƙarancin cajin mara kyau a cikin crystal.Nau'in sieve na kwayoyin halitta an raba shi zuwa nau'in A, nau'in X da nau'in Y bisa ga tsarinsa na crystal.
Tsarin sinadarai na ƙwayoyin zeolite | Mx/n [(AlO.2x (SiO.2y] da W.2O. |
Mx/n. | Cation ion, kiyaye crystal tsaka tsaki na lantarki |
(AlO2) x (SiO2) y | kwarangwal na lu'ulu'u na zeolite, tare da siffofi daban-daban na ramuka da tashoshi |
H2O | tururin ruwa ta jiki |
Siffofin | Ana iya aiwatar da adsorption da yawa da lalata |
Rubuta AMolecular sieve |
| Babban bangaren nau'in sieve kwayoyin A shine silicon aluminate.Babban ramin crystal shine tsarin octaring. Buɗewar babban buɗewar crystal shine 4Å (1Å = 10-10m), wanda aka sani da nau'in 4A (wanda aka fi sani da nau'in A) sieve kwayoyin;Musanya Ca2 + don Na + a cikin sieve kwayoyin 4A, yana samar da buɗaɗɗen 5A, wato nau'in 5A (aka calcium A) sieve na ƙwayoyin cuta; K+ don sieve kwayoyin 4A, yana samar da buɗaɗɗen 3A, wato 3A (aka potassium A) sieve kwayoyin. |
Nau'in X kwayoyin sieve | Babban bangaren X kwayoyin sieve shine silicon aluminate, babban ramin crystal shine tsarin zobe na kashi goma sha biyu. Tsarin crystal daban-daban yana samar da crystal sieve na kwayoyin halitta tare da budewar 9-10 A, wanda ake kira 13X (wanda kuma aka sani da nau'in sodium X). ;Ca2 + musanya da Na + a cikin 13X kwayoyin sieve, samar da kwayoyin sieve crystal tare da budewar 8-9 A, wanda ake kira 10X (wanda aka fi sani da calcium X). |
- Aikace-aikace
- Adsorption na kayan ya fito ne daga adsorption ta jiki (vander Waals Force), tare da ƙarfin polarity da filayen Coulomb a cikin ramin crystal ɗin sa, yana nuna ƙarfin adsorption don ƙwayoyin igiya (kamar ruwa) da ƙwayoyin da ba a cika ba.
- Rarraba buɗaɗɗen ramin kwayoyin halitta iri ɗaya ne sosai, kuma abubuwa ne kawai da ke da diamita na ƙwayoyin cuta ƙasa da diamita na iya shiga ramin crystal a cikin simintin ƙwayoyin cuta.