Indlela yokusebenzisa i-4A i-molecular sieve

Isetyenziswa njani i-4A i-molecular sieve?Ziintoni ezifunekayo kwimo engqongileyo esebenza kuyo?Njengomathiriyeli we-porous, i-4A ye-molecular sieve isetyenziswa ngokubanzi kwiinkalo ezininzi ngenxa ye-microporous molecular sieve njengento yokwahlula i-adsorption, i-ion exchange material kunye ne-catalytic material.
Okokuqala, makhe sijonge ukuqaliswa kwe-4A ye-molecular sieve:
Ngenxa yokuba ubukhulu bayo obusebenzayo bepore yi-0.4nm, ibizwa ngokuba yi-4A ye-molecular sieve, enokuthi ibhengeze iikhompawundi ze-molecular eziphantsi ezifana namanzi, i-methanol, i-ethanol, i-carbon dioxide, i-ethylene, i-sulfur dioxide, i-hydrogen sulfide, kunye ne-propylene.

• 1. Ubungakanani bemolekyuli yendlela yokusebenzisa i-4A ye-molecular sieve

Ngenxa yokuba ubungakanani bayo bepore obusebenzayo buyi-0.4mm, ayinakukwazi ukubhengeza nayiphi na imolekyuli (kubandakanywa nepropane) enobubanzi obungaphezulu kwe-0.4mm, kodwa ukusebenza kwayo okukhethiweyo kwe-adsorption yamanzi kuphezulu kunayo nayiphi na enye iamolekyuli, kwaye yenye yeyona molecular isetyenziswa kakhulu. iintlobo zesisefo kwishishini.

• Indawo yokusebenza yendlela yokusetyenziswa kwe-4A ye-molecular sieve

1. Xa izinga lokushisa liyi-110 ° C, kunokwenzeka ukukhupha amanzi kwindawo enkulu, kodwa ayiyi kugxotha amanzi kwiipores ze-molecular sieve.Ngoko ke, kwibhubhoratri, inokuthi isebenze kwaye iphelelwe ngamanzi ngokumisa kwisithando somlilo se-muffle.Iqondo lokushisa ngu-350 ° C, kwaye lomiswe phantsi koxinzelelo oluqhelekileyo lweeyure ze-8 (ukuba kukho ipompo yokucoca, inokomiswa kwi-150 ° C kwiiyure ze-5).
2. Isisefu esivunyiweyo se-4A molecular sieve sipholile ukuya malunga ne-200 ° C (malunga nemizuzu emi-2) emoyeni, kwaye kufuneka sigcinwe kwi-desikacator ngokukhawuleza.
3. Kwindawo evunyelweyo, ukukhuselwa kwe-nitrogen eyomileyo kufuneka kusetyenziswe ngexesha lokupholisa kunye nokugcinwa, okunokuthintela ngokufanelekileyo umphunga wamanzi emoyeni ukuba ungaphinde ubhengezwe kwakhona.Ngenxa yokuba i-molecular sieve endala emva kokusetyenziswa inezingcolisi, akufanele isebenze kuphela kwiqondo lokushisa lama-450 ° C, kodwa kunye nomphunga wamanzi okanye igesi ye-inert (i-nitrogen, njl.) kufuneka ifakwe endaweni yezinye izinto kwi-molecular sieve.
4. Gwema i-oyile kunye namanzi angamanzi xa usebenzisa, kwaye uzame ukuphepha ukudibana ngokuthe ngqo neoli kunye namanzi angamanzi.
Njenge-alkali yensimbi ye-aluminosilicate, i-4A ye-molecular sieve ithandwa ngabathengi abaninzi ekomisweni kwegesi kunye nolwelo, kwaye ingasetyenziselwa ukucocwa kunye nokucocwa kwegesi okanye ulwelo, njengokutsalwa kwe-argon.Ngoku, ngaba uyawaqonda amanyathelo okhuseleko okusetyenziswa kwawo?
Bhrawuza ngakumbi ulwazi lwe-molecular sieve:

https://www.kelleychempacking.com/news/adsorption-performance-of-4a-molecular-sieve-for-h%e2%82%82s/

https://www.kelleychempacking.com/news/2-tips-to-extend-the-life-of-molecular-sieves/

https://www.kelleychempacking.com/news/korean-customer-inspected-the-production-schedule-of-80-tons-of-molecular-sieve/