Molecular sab cib ZSM

ZSM-5 hom zeolite, teej tug high-silica zeolite thiab muaj ib tug Si / Al piv txog li 1000 thiab saum toj no, kuj qhia tau hais tias lub hydrophobic yam ntxwv. Tus qauv feature ntawm xws li ib tug zeolite yog hais tias lub ntsug thiab kab rov tav qhov chaw yog crystalline alum inosilicate muaj li ntawm 10-membered channel. Cov yooj yim qauv yog tsim los ntawm cov yim 5-membered rings, uas muaj raws nkaus xwb thiab yog tsis muaj tawb-free kab noj hniav. ZSM-5 muaj ob poob lawm ntawm tus ntoo khaub lig raws, yog ib tus uas yog ellipse, thiab lub qhov rais txoj kab uas hla los ntawm yog 0,55 mus 0.60nm. Raws li cov tshuaj tiv thaiv qhov chaw zoo ib yam li rau cov duab ntawm lub nkag, lub zeolite muaj ib tug duab xaiv cov nyhuv rau lub reactants thiab cov khoom. Ntxiv mus, ZSM-5 yog ib tug zoo raw khoom ntawm xim catalyst vim lub harmonious qauv thiab hydrothermal stability.

ZSM-5 hom zeolite yog dav ntaub ntawv rau petrochemical ua lag luam, thov mus rau fluidifying, catalyzing thiab ntes txheej txheem raws li ib qho kev pab rau cov ntau propylene thiab liquefied gas, thiab kev txhim kho lub octane tooj ntawm cov roj av. Nyob rau hauv tas li ntawd, lub zeolite yuav tsum muaj ntaub ntawv rau zus tau tej cov ethylbenzene, xylene, phenol, pyridine, etc.

Daim ntawv:
1.ZSM - 5 molecular sab cib siv rau FCC catalyst: pa SiO2 / Al2O3 piv nyob nruab nrab ntawm 40 mus 50.
2.ZSM - 5 molecular sab cib siv rau FCC roj av additives los txo cov olefin: pa SiO2 / Al2O3 piv nyob nruab nrab ntawm 38 rau 40.
3.ZSM - 5 molecular sab cib siv rau resid catalytic cracking: pa SiO2 / Al2O3 piv nyob nruab nrab ntawm 25 mus rau 30.
4.ZSM - 5 molecular sieves nyob rau hauv tshuaj kev lag luam, zoo tshuaj kev lag luam yog dav siv nyob rau hauv zoo-xim catalysis, xws li diethylbenzene catalyst, xylene isomerization catalyst, ethyl acetate, ethylene glycol, ethylene glycol butyl ether ntawm catalyst muaj ib tug ntau ntawm cov kev siv.

Technic hnub: