Daim ntawv thov ntawm molecular sieve lub cev qhuav dej kev kho mob ntawm acetonitrile feem ntau yog tshwm sim hauv cov txheej txheem ziab ntawm acetonitrile. Acetonitrile (CH3CN) yog cov xim tsis muaj pob tshab uas muaj cov kuab tshuaj zoo heev, uas tuaj yeem yaj ntau yam organic, inorganic thiab gaseous, thiab tsis muaj dej thiab cawv. Nws yog dav siv nyob rau hauv tshuaj synthesis, organic synthesis thiab analytical chemistry. Txawm li cas los xij, kev lag luam -qib acetonitrile feem ntau muaj dej, uas yuav muaj kev cuam tshuam tsis zoo rau qee yam tshuaj lom neeg, yog li nws yuav tsum tau nqus dej ntau heev.
Molecularsieve yog ib yam khoom ntxeem tau, uas muaj lub cev muaj zog ntawm kev xaiv sib cais thiab adsorption, thiab tuaj yeem siv los adsorb cov dej hauv acetonitrile. Hauv kev kho lub cev qhuav dej ntawm acetonitrile, daim ntawv thov ntawm molecularsieve muaj qhov zoo:
1, ua kom lub cev qhuav dej:
Nws tuaj yeem nqus dej zoo hauv acetonitrile, kom cov dej ntsiab lus ntawm acetonitrile txo mus rau qhov qis heev, feem ntau tsawg dua 10PPM, ncav cuag 1 txog 5 PPM. Qhov no tuaj yeem tiv thaiv acetonitrile los ntawm kev cuam tshuam nrog dej los tsim acetamide thiab lwm yam khoom tsis zoo.
2, xaiv adsorption
Nws yog ib qho kev xaiv zoo rau dej, tuaj yeem zam kev adsorption ntawm lwm yam khoom uas muaj kev cuam tshuam tseem ceeb ntawm kev ua haujlwm ntawm acetonitrile, thiaj li tswj tau qhov zoo ntawm acetonitrile.
3, rov ua dua tshiab:
Nws siv rau lub sijhawm, tuaj yeem rov qab tau nws lub peev xwm adsorption los ntawm kev kho dua tshiab, rov ua dua tshiab, txo cov nqi tsim khoom.
4, kev nyab xeeb
Cov txheej txheem molecular sieve lub cev qhuav dej yog qhov muaj kev nyab xeeb, yuav tsis qhia cov pa phem tshiab, yuav tsis muaj kev cuam tshuam tsis zoo rau cov muaj pes tsawg leeg ntawm acetonitrile.
Hauv kev siv tswv yim, thaum siv molecular sieve rau kev kho acetonitrile lub cev qhuav dej, cov ntsiab lus hauv qab no yuav tsum tau sau tseg:
1, xaiv hom molecularsieve: raws li cov yam ntxwv ntawm acetonitrile thiab lub cev qhuav dej, xaiv hom molecularsieve tsim nyog. Piv txwv li, hom A heev hydrophilic molecularsieves ua tau zoo hauv acetonitrile lub cev qhuav dej.
2, kev khiav hauj lwm tej yam kev mob tswj: nyob rau hauv lub dehydration txheej txheem, nws yog tsim nyog los tswj qhov tsim nyog kub, siab thiab kev sib cuag lub sij hawm thiab lwm yam kev mob los xyuas kom meej tias lub molecular sieve muaj peev xwm muab tag nrho cov kev ua si rau nws adsorption kev ua tau zoo.
3, cov khoom siv nruj: thaum adsorption qhuav, xyuam xim rau qhov nruj ntawm cov cuab yeej kom tsis txhob acetonitrile chav dej los ntawm kev nyab xeeb.
Hauv cov ntsiab lus, kev kho lub cev qhuav dej ntawm acetonitrile los ntawm molecular sieve muaj qhov zoo ntawm kev ua haujlwm siab, kev xaiv zoo, kev tsim tawm thiab kev nyab xeeb, thiab muaj kev vam meej hauv kev lag luam ntawm acetonitrile.
