Ama-molelisalar sievesyizinto ezibalulekile ezisetshenziswayo ezisetshenziswa ezinhlokweni ezahlukahlukene zezimboni zokuhlukanisa ama-molecule ngokuya ngosayizi nokwakheka kwabo. Ziyi-Crystalline Metal Aluminilisicates nge-interconecting enezici ezimbili ezixhumeka kathathu zika-Alumina noSilica Tetrahedra. Okusetshenziswa kakhuluama-molelisalar sieveszingama-3a ne-4A, ezahluka ngosayizi wazo we-pore kanye nezinhlelo zokusebenza.
Ama-4a ama-molelisalar anosayizi wobukhulu obukhulu be-4 angstroms, kuyilapho3A ama-molelisalar sievesube nosayizi omncane we-pore ezungeze ama-angstroms ayi-3. Umehluko ngosayizi we-pore uthola ukuhlukahluka kumakhono abo ama-adsorption kanye nokukhetha ama-molecule ahlukene.4a ama-molelisalar sievesImvamisa isetshenziselwa ukomisa kwamagesi noketshezi, kanye nokususwa kwamanzi kusuka kuma-solvents kanye negesi yemvelo. Ngakolunye uhlangothi, ama-3a ama-molelisalar sieves aqashwa ngokuyinhloko ukopha ama-hydrocarbons angafakwanga ama-hydrocarbons nama-polar compound.
Ukuhluka ngosayizi we-pore futhi kuthinta izinhlobo zama-molecule angahle aklabiswe ngohlobo ngalunye lwesihlungo se-molecular. Ama-4a ama-molelisalar aseseeves asebenza ngempumelelo kuma-molecule amakhulu ama-molecule anjengamanzi, isikhutha, kanye nama-hydrocarbons angafakwanga, kanti ama-3a ama-hydrocarbons, ngenkathi ama-3a ama-molelisar afihliwe ebheke kuma-molecule amancane anjengamanzi, i-ammonia kanye notshwala. Lokhu kukhetha kubalulekile kuhlelo lokusebenza lapho ukungcola okukhethekile kudinga ukususwa kunhlanganisela yamagesi noma uketshezi.
Enye into ebalulekile okufanele uyicabangele lapho ukhetha phakathi3a nama-4a ama-molelisalar sievesamandla abo okumelana namazinga ahlukahlukene omswakama. Ama-3a ama-molelisalar sieves anokumelana okuphezulu kumphunga wamanzi uma kuqhathaniswa nama-4a ama-molelisalar sieves, abenze balungele izinhlelo zokusebenza lapho ubukhona bomswakama lubakhathalela khona. Lokhu kwenza ama-3a ama-molelisar afivili alungele ukusetshenziswa ezinhlelweni zomoya negesi lapho ukususwa kwamanzi kubucayi.
Ngokuya kwezicelo zezimboni, ama-4a ama-molelisalar sieves ajwayele ukusetshenziswa ekukhiqizweni komoya-mpilo kanye ne-nitrogen kusuka ezinqubweni zokwehlukaniswa komoya, kanye nokomiswa kweziqandisini kanye negesi yemvelo. Amandla abo okususa ngempumelelo amanzi nekhabhoni i-dioxide abenze babe yigugu kulezi zinqubo. Ngakolunye uhlangothi, ama-3a ama-molelisalar sieves athola ukusetshenziswa okuningana esomisweni sama-hydrocarbons angafakwanga, anjenge-propyleed, i-perpenee, kanye ne-buthaneene, kanye nokuhlanzwa kwegesi kaphethiloli eliwuketshezi.
Kubalulekile ukuqaphela ukuthi ukukhethwa phakathi kwe-3A nama-4a ama-molelisale weeves kuncike kwizidingo ezithile zohlelo lokusebenza, kufaka phakathi uhlobo lwama-molecule ukuba ahlelwe, izinga lomswakama olwethulwe, kanye nobumsulwa obufunayo bomkhiqizo wokugcina. Ukuqonda umehluko phakathi kwalezi zizwisisi ama-molefanelar kubalulekile ekukhetheni inketho efanelekile yenqubo ethile yezimboni.
Ekuphetheni, kuyilapho bobabili3a nama-4a ama-molelisalar sievesBaqakathekile ngezinqubo ezahlukahlukene zokuphelelwa amandla kanye nokuhlanza, umehluko wazo ngosayizi we-pore, ukukhiqizwa kwe-adveltion, kanye nokumelana nomswakama uzenze zibe zilungele izinhlelo ezihlukile. Ngokuqonda lo mehluko, izimboni zingenza izinqumo ezinolwazi mayelana nokukhethwa kanye nokusetshenziswa kwama-molefanelar sieves ukwenza ngcono izinqubo zawo futhi kufinyelelwe ukuhlanzeka komkhiqizo oyifunayo.
Isikhathi sePosi: Jun-27-2024