- Kufotokozera
- Mamolekyu azinthu zosiyanasiyana amasiyanitsidwa ndi kufunikira ndi kukula kwa adsorption, kotero chithunzicho chimatchedwa "molecular sieve".
- Sieve ya molekyulu (yomwe imadziwikanso kuti synthetic zeolite) ndi silicate microporous crystal.Ndiwo maziko a mafupa omwe amapangidwa ndi silicon aluminate, yokhala ndi zitsulo zachitsulo (monga Na +, K +, Ca2 +, ndi zina zotero) kuti zithetse vuto lopitirira mu kristalo.Mtundu wa sieve ya mamolekyulu umagawidwa makamaka kukhala mtundu wa A, mtundu wa X ndi mtundu wa Y malinga ndi kapangidwe kake ka kristalo.
Chemical formula ya maselo a zeolite | Mx/n [(AlO.2) x (SiO.2) y]WH.2O. |
mx/n. | cation ion, kusunga kristalo wamagetsi osalowerera ndale |
(AlO2) x (SiO2) y | Chigoba cha makristalo a zeolite, okhala ndi mawonekedwe osiyanasiyana a mabowo ndi ngalande |
H2O | thupi adsorbed madzi nthunzi |
Mawonekedwe | Ma adsorption angapo ndi desorption amatha kuchitidwa |
Lembani sieve ya Amolecular |
| Chigawo chachikulu cha mtundu A molecular sieve ndi silicon aluminate.Bowo lalikulu la kristalo ndi mawonekedwe a octaring.Kutsegula kwa kabowo kakang'ono ka kristalo ndi 4Å(1Å=10-10m), yotchedwa mtundu wa 4A (wotchedwanso mtundu A) sieve ya molekyulu;Sinthani Ca2 + ya Na + mu sefa ya molekyulu ya 4A, kupanga kabowo ka 5A, komwe ndi mtundu wa 5A (aka calcium A) sieve ya molekyulu; K+ ya 4A sieve ya molekyulu, kupanga pobowo 3A, kutanthauza 3A (aka potaziyamu A) molekyulu sieve. |
Type X molecular sieve | Chigawo chachikulu cha X molecular sieve ndi silicon aluminate, dzenje lalikulu la kristalo ndi mapangidwe a mphete khumi ndi ziwiri. Mapangidwe osiyanasiyana a kristalo amapanga kristalo wa molecular sieve wokhala ndi 9-10 A, wotchedwa 13X (omwe amadziwikanso kuti sodium X mtundu) molecular sieve. ;Ca2 + anasinthanitsa Na + mu 13X sieve ya molekyulu, kupanga molecular sieve crystal yokhala ndi 8-9 A, yotchedwa 10X (yotchedwanso calcium X) molecular sieve. |
- Kugwiritsa ntchito
- Kutsatsa kwazinthu kumachokera ku kutengeka kwakuthupi (vander Waals Force), yokhala ndi polarity yolimba ndi minda ya Coulomb mkati mwa dzenje la kristalo, kuwonetsa mphamvu yamphamvu ya mamolekyu a polar (monga madzi) ndi mamolekyu osatulutsidwa.
- The kabowo kabowo sieve maselo ndi yunifolomu, ndi zinthu zokha ndi molecular awiri ang'onoang'ono kuposa dzenje awiri akhoza kulowa mu dzenje galasi mkati mwa maselo sieve.