Ntxiv nrog rau hydrogen sulfide, cov roj av cracking gas feem ntau muaj qee yam ntawm cov organic sulfur. Qhov tseem ceeb ntawm kev txo cov sulfur cov ntsiab lus yog kev tshem tawm cov tshuaj sulfur cawv thiab hydrogen sulfide los ntawm cov roj nyoos. Molecular sieve tuaj yeem siv los adsorb qee cov tshuaj sulfur. Txoj cai adsorption feem ntau suav nrog ob yam:
1- zoo li xaiv thiab adsorption. Muaj ntau qhov sib txawv aperture raws nyob rau hauv cov qauv molecular sieve, uas tsis tsuas yog muab ib tug loj sab hauv cheeb tsam, tab sis kuj txwv qhov feem ntawm molecules nrog loj aperture nkag.
2- polar adsorption, vim yog cov yam ntxwv ntawm ion lattice, molecular sieve nto yog siab polarity, yog li muaj peev xwm adsorption siab rau cov molecules unsaturated, polar molecules thiab yooj yim polarized molecules. Molecular sieve feem ntau yog siv los tshem tawm thiol los ntawm cov roj ntsha ntuj. Vim qhov tsis muaj zog polarity ntawm COS, zoo ib yam li cov qauv molecular ntawm CO2, muaj kev sib tw ntawm cov adsorption ntawm molecular sieve nyob rau hauv lub xub ntiag ntawm CO2. Txhawm rau kom yooj yim cov txheej txheem thiab txo cov cuab yeej siv peev, molecular sieve adsorption sulfate feem ntau yog siv ua ke nrog molecular sieve lub cev qhuav dej.
Lub aperture ntawm JZ-ZMS3, JZ-ZMS4, JZ-ZMS5 thiab JZ-ZMS9 molecular sieve yog 0.3nm, 0.4nm, 0.5nm thiab 0.9nm. Nws tau pom tias JZ-ZMS3 molecular sieve hardly absorbs thiol, JZ-ZMS4 molecular sieve absorbs me me peev xwm thiab JZ-ZMS9 molecular sieve absorbs thiol zoo. Cov txiaj ntsig tau pom tias lub peev xwm adsorption thiab cov khoom adsorption nce ntxiv thaum lub aperture nce.
Yam khoom:JZ-ZMS9 molecular sieve; JZ-ZHS molecular sieve