MCM 22

MCM 22 yog ib daim ntawv -zoo li siv lead ua nrog cov qauv pore tshwj xeeb thiab cov kua qaub catalytic. Nws muaj kev ruaj ntseg hydrothermal zoo, muaj zog adsorption muaj peev xwm, thiab thaj chaw loj tshwj xeeb.

MCM 22 chemical formula|H_2.4Na_3.1| [ALO.4B_5.1Si_66.5O₁₄₄]

Kev piav qhia

MCM-22 yog ib qho tshiab microporous molecular sieve nrog MWW qauv. Nws muaj ob lub pore ywj siab, ib qho ntawm cov uas muaj kaum ob lub nplhaib loj hauv lub tawb. Cov tawb no tau muab tso rau sab saum toj ntawm lwm qhov los ntawm kev sib tshooj rau lub nplhaib sib koom ua ke, khiav los ntawm kwv yees li elliptical kaum tus tswv cuab lub nplhaib qhov rais; Lwm qhov pore system yog ob - qhov ntev sinusoidal waveform pore nrog rau qhov zoo ntawm kaum lub nplhaib, nyob ib puag ncig los ntawm kev sib tshooj rau lub nplhaib sib txuas nrog lub supercage. Lub sab sauv thiab sab qis ntawm cov txheej txheej txheej ntawm cov molecular sieve yog them nrog high-density pore lug, nrog kaum ob lub nplhaib qhib thiab qhov tob ntawm kwv yees li 0.7 nm.

Specification

Hom	Qhov taw qhia
Qhov tshwm sim	Dawb hmoov
Tus txheeb ze crystallinity % Ntau dua lossis sib npaug	~95
X-ray diffraction crystal theem tsom xam	Ua tiav raws li tus qauv XRD qauv ntawm MCM-22, tsis muaj impurities.
SiO₂/Al₂O₃, mol / mol	20-30
Na₂O wt % Tsawg dua lossis sib npaug	H+ 0.05	Na+
Crystallite loj	Txoj kab uas hla 100-500 * Thickness 20-100
Qhuav Basewt % Ntau dua lossis sib npaug	90
Sieve Residue wt % Tsawg dua lossis sib npaug	1
Particle Size Distribution Loj dua los yog sib npaug	100 cm

Daim ntawv thov

MCM-22 muaj kev siv dav hauv ntau qhov chaw catalytic, xws li alkylation, kev tiv thaiv ib puag ncig, roj av kho dua tshiab, catalytic cracking, isomerization thiab disproportionation ntawm aromatic compounds, isomerization ntawm olefins, hydration, polymerization, thiab lwm yam Tam sim no, nws yog tsuas yog siv nyob rau hauv zus tau tej cov alkyl aromatic compounds.