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 |
| Nau'in A Molecular 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;
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| Nau'in X Molecular Sieve | Babban abin da ke tattare da sieve kwayoyin X shine silicon aluminate, babban ramin crystal shine tsarin zoben kashi goma sha biyu. Ca2 + ya yi musanya da Na + a cikin simintin kwayoyin halitta na 13X, yana samar da kristal sieve na kwayoyin halitta tare da budewar 8-9 A, wanda ake kira 10X (wanda kuma aka sani da calcium X).
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Nau'in A Molecular Sieve
Nau'in X Molecular Sieve
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.