Sieve ya maselo

Sieve ya molekyulu ndi adsorbent yolimba yomwe imatha kulekanitsa mamolekyu amitundu yosiyanasiyana.Ndi SiO2, Al203 ngati crystalline aluminium silicate yokhala ndi gawo lalikulu.Pali mabowo ambiri amtundu wina mu kristalo wake, ndipo pali mabowo ambiri amtundu womwewo pakati pawo.Imatha kutsatsa mamolekyu ang'onoang'ono kuposa momwe ma pore awiriwa amalowera mkati mwa dzenje, ndikupatula mamolekyulu akulu kuposa pobowo kupita kunja, kusewera ngati sieve.

Sieve ya mamolekyulu imakhala ndi mphamvu zoyamwitsa chinyezi, ndipo pafupifupi zosungunulira zonse zimatha kugwiritsidwa ntchito kuumitsa, motero zimagwiritsidwa ntchito kwambiri mu labotale ndi mafakitale.Molecular sieve adsorption njira ndi madzi m'thupi ndi otsika mphamvu mowa ndi mkulu dzuwa, ndondomeko ndi losavuta, oyenera kwambiri kutaya madzi m'thupi la madzi ndi mpweya, ntchito kukula kwa maselo sieve kabowo kusankha adsorption madzi, kuti kupeza kulekana.

Kukhazikika kwamafuta a sieve yama cell ndikwabwino, komwe kumatha kupirira kutentha kwakanthawi kochepa kwa 600C ~ 700C, ndipo kutentha kwatsopano sikuyenera kupitirira 600C, mwinamwake kumakhudza ntchito ya sieve ya maselo, ndipo ikhoza kuchotsedwa (palibe kusinthika kwamafuta).Sieve ya molekyulu sisungunuka m'madzi, koma imasungunuka mu ma acid amphamvu ndi alkali, kotero imatha kugwiritsidwa ntchito pakati pa pH5 ~ 11.Maselo sieve ndi yosavuta kuyamwa madzi, ayenera losindikizidwa yosungirako, ntchito ayenera kufufuza ngati madzi okhutira kuposa muyezo, kusungirako kwa nthawi yaitali mayamwidwe chinyezi, ayenera kugwiritsidwa ntchito pambuyo ntchito, ntchito zake zosasintha.Sieve ya mamolekyu imakhala ndi mawonekedwe othamanga kwambiri, nthawi zambiri zosinthika, kuphwanya kwamphamvu komanso kukana kuvala, kukana kuipitsidwa kwamphamvu, kugwiritsa ntchito bwino kwambiri, moyo wautali wautumiki, ndi zina zambiri, yomwe ndi desiccant yomwe imakonda kwambiri pakuyanika kwa gasi ndi madzi.