Synthetic zeolite molecular sieves yog ib hom silicon -aluminium silicate siv lead ua nrog cov qauv nruj nruj. Cov txheej txheem sab hauv tsim los ntawm silicon- txhuas tetrahedra muaj suav tsis txheeb micropores nrog peb - qhov sib txuas, thiab nws yog ib qho muaj zog polar adsorbent nrog cov pore diameters, muaj kev xaiv siab thiab adsorption sib cais muaj peev xwm. Raws li cov silicon-aluminium ratio nce, lub polarity ntawm molecular sieve maj mam txo. Yog li ntawd, molecular sieves nrog ib tug tsawg silicon -aluminium ratio muaj ib tug muaj zog muaj peev xwm adsorb dej thiab haum rau lub cev qhuav dej ntawm gases.
Molecular sievesfeem ntau yog siv los ua tus neeg ua haujlwm lub cev qhuav dej kom zoo rau cov pa roj carbon monoxide compressed. Lawv lub ntsiab zoo yog raws li nram no:
①Molecular sieves tuaj yeem ua kom lub cev qhuav dej ntau heev. Raws li ib txwm muaj, lawv
adsorption muaj peev xwm siab dua li ntawm lwm cov adsorbents, yog li ua kom txo qis qhov loj ntawm lub tshuab ziab khaub ncaws thiab txuag nqi.
②Molecular sieves tseem tuaj yeem ua kom cov roj cua qhuav ntawm qhov kub siab dua.
③Molecular sieves tuaj yeem xaiv adsorb noo noo, tiv thaiv cov co- adsorption ntawm hnyav hydrocarbons uas yuav ua rau cov adsorbent poob nws cov txiaj ntsig.
④ Molecular sieves tsis tshua muaj kev puas tsuaj los ntawm cov dej ua kua, thaum cov adsorbents zoo li silica gel zoo li nkig thaum raug dej.
Thaum cov roj dhau los ntawm lub txaj molecular sieve, cov dej vapor molecules hauv cov pa nkag mus rau hauv lub qhov hws ntawm molecular sieve nrog rau cov roj ntws. Txij li cov dej molecules yog cov polar molecules muaj zog, lawv tau adsorbed rau ntawm qhov hws thiab tsis txav nrog cov pa roj; thaum hydrocarbon gases xws li methane tsis yog -polar molecules thiab tuaj yeem hla tau yooj yim, yog li ua tiav cov pa kom qhuav.
CHEMXIN tau koom nrog Molecular Sieve txij li xyoo 2002, dhau 23 xyoo ntawm kev paub hauv chaw tsim khoom, kev tsim kho thiab kev taw qhia kev teeb tsa. Cia peb sib qhia ntxiv thiab kawm ua ke.
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