Kev Taw Qhia
Phenoxyethanol, ib yam tshuaj uas siv dav hauv cov tshuaj pleev ib ce, tau txais txiaj ntsig zoo vim nws muaj txiaj ntsig zoo tiv thaiv kev loj hlob ntawm cov kab mob me me thiab sib haum nrog cov tshuaj pleev ib ce uas zoo rau daim tawv nqaij. Ib txwm muaj, cov txheej txheem no tau tsim los ntawm Williamson ether synthesis siv sodium hydroxide ua tus catalyst, thiab feem ntau ntsib teeb meem xws li kev tsim cov khoom seem, kev siv hluav taws xob tsis zoo, thiab kev txhawj xeeb txog ib puag ncig. Cov kev nce qib tsis ntev los no hauv kev tshuaj lom neeg catalytic thiab kev tsim kho ntsuab tau qhib txoj hauv kev tshiab: kev sib xyaw ncaj qha ntawm ethylene oxide nrog phenol los tsim cov phenoxyethanol uas muaj kev ntshiab siab, zoo rau cov tshuaj pleev ib ce. Qhov kev tsim kho tshiab no cog lus tias yuav txhais cov qauv kev tsim khoom lag luam los ntawm kev txhim kho kev ruaj khov, kev nthuav dav, thiab kev siv nyiaj tsim nyog.
Cov Teeb Meem Hauv Cov Txheej Txheem Ib Txwm Muaj
Cov txheej txheem tsim cov phenoxyethanol yog siv cov tshuaj phenol nrog 2-chloroethanol hauv cov xwm txheej alkaline. Txawm hais tias ua tau zoo, txoj kev no tsim cov sodium chloride ua cov khoom seem, xav tau cov kauj ruam ntxuav ntau heev. Tsis tas li ntawd, kev siv cov tshuaj chlorinated intermediates ua rau muaj kev txhawj xeeb txog ib puag ncig thiab kev nyab xeeb, tshwj xeeb tshaj yog ua raws li kev lag luam tshuaj pleev ib ce hloov mus rau cov ntsiab cai "tshuaj ntsuab". Ntxiv mus, kev tswj hwm kev ua tsis sib xws feem ntau ua rau muaj cov khoom tsis huv xws li polyethylene glycol derivatives, uas ua rau cov khoom zoo thiab kev ua raws li txoj cai.
Kev Tsim Kho Tshiab ntawm Technological
Qhov kev tawg ua tiav no yog nyob rau hauv ob kauj ruam catalytic txheej txheem uas tshem tawm cov tshuaj chlorinated reagents thiab txo cov khib nyiab:
Kev Ua Haujlwm Epoxide:Ethylene oxide, ib qho epoxide uas muaj zog heev, yuav qhib lub nplhaib thaum muaj phenol. Ib qho catalyst tshiab heterogeneous acid (piv txwv li, zeolite-supported sulfonic acid) ua rau cov kauj ruam no yooj yim dua thaum kub me ntsis (60–80°C), zam kev siv zog ntau.
Kev Xaiv Etherification:Cov tshuaj catalyst coj cov tshuaj tiv thaiv mus rau phenoxyethanol tsim thaum tswj cov tshuaj tiv thaiv polymerization. Cov txheej txheem tswj hwm txheej txheem siab heev, suav nrog cov thev naus laus zis microreactor, ua kom muaj kev tswj hwm qhov kub thiab stoichiometric meej, ua tiav >95% kev hloov pauv.
Cov Txiaj Ntsig Tseem Ceeb ntawm Txoj Kev Tshiab
Kev Ruaj Ntseg:Los ntawm kev hloov cov tshuaj chlorine ua ntej nrog ethylene oxide, cov txheej txheem tshem tawm cov khib nyiab phom sij. Kev siv dua ntawm cov catalyst txo cov khoom siv, ua raws li lub hom phiaj kev lag luam ncig.
Kev Huv Si thiab Kev Nyab Xeeb:Qhov tsis muaj cov chloride ions ua kom ntseeg tau tias ua raws li cov cai tswjfwm kev kho kom zoo nkauj (piv txwv li, EU Cosmetics Regulation No. 1223/2009). Cov khoom kawg ua tau raws li >99.5% purity, tseem ceeb rau kev siv rau kev kho mob tawv nqaij.
Kev Ua Haujlwm Zoo ntawm Kev Lag Luam:Cov kauj ruam ua kom huv si yooj yim thiab kev siv hluav taws xob tsawg dua txo cov nqi tsim khoom los ntawm ~ 30%, muab cov txiaj ntsig sib tw rau cov chaw tsim khoom.
Kev Cuam Tshuam ntawm Kev Lag Luam
Qhov kev tsim kho tshiab no tuaj txog rau lub sijhawm tseem ceeb. Nrog rau kev thov thoob ntiaj teb rau phenoxyethanol kwv yees tias yuav loj hlob ntawm 5.2% CAGR (2023–2030), tsav los ntawm cov qauv kho kom zoo nkauj ntuj thiab organic, cov chaw tsim khoom ntsib kev nyuaj siab kom txais yuav cov kev coj ua zoo rau ib puag ncig. Cov tuam txhab zoo li BASF thiab Clariant twb tau sim cov txheej txheem catalytic zoo sib xws, qhia txog kev txo cov pa roj carbon thiab lub sijhawm sai dua mus rau kev ua lag luam. Ntxiv mus, txoj kev scalability txhawb nqa kev tsim khoom decentralized, ua rau cov saw hlau hauv cheeb tsam thiab txo cov pa phem ntsig txog logistics.
Kev Cia Siab Yav Tom Ntej
Kev tshawb fawb txuas ntxiv tsom mus rau bio-based ethylene oxide uas tau los ntawm cov peev txheej rov ua dua tshiab (piv txwv li, sugarcane ethanol) kom txo cov pa roj carbon dioxide ntxiv. Kev koom ua ke nrog AI-tsav cov platforms reaction optimization tuaj yeem txhim kho kev kwv yees tau zoo thiab lub neej catalyst. Cov kev nce qib no tso phenoxyethanol synthesis ua tus qauv rau kev tsim tshuaj lom neeg ruaj khov hauv kev lag luam tshuaj pleev ib ce.
Xaus lus
Kev tsim cov tshuaj phenoxyethanol los ntawm ethylene oxide thiab phenol ua piv txwv qhia txog kev tsim kho tshiab ntawm thev naus laus zis tuaj yeem sib haum xeeb nrog kev ua haujlwm zoo hauv kev lag luam nrog kev saib xyuas ib puag ncig. Los ntawm kev daws cov kev txwv ntawm cov txheej txheem qub, txoj hauv kev no tsis yog tsuas yog ua tau raws li qhov kev thov ntawm kev lag luam tshuaj pleev ib ce xwb tab sis kuj teeb tsa tus qauv rau kev siv tshuaj ntsuab hauv kev tsim tshuaj tshwj xeeb. Raws li cov neeg siv khoom nyiam thiab cov cai tswjfwm txuas ntxiv muab qhov tseem ceeb rau kev ruaj khov, cov kev tawg ua tej yam no yuav tseem ceeb rau kev nce qib hauv kev lag luam.
Tsab xov xwm no qhia txog kev sib tshuam ntawm chemistry, engineering, thiab kev ruaj khov, muab ib daim qauv rau kev tsim kho tshiab yav tom ntej hauv kev tsim cov khoom xyaw kom zoo nkauj.
Lub sijhawm tshaj tawm: Lub Peb Hlis-28-2025