Guhanga udushya mu ikoranabuhanga: Synthesis ya Cosmetic-Grade Phenoxyethanol yo muri Ethylene Oxide na Fenol

Intangiriro

Fenoxyethanol, ikoreshwa cyane mu kubungabunga ibintu byo kwisiga, imaze kumenyekana kubera imbaraga zayo zo gukura kwa mikorobe no guhuza imiti yangiza uruhu. Ubusanzwe syntheshes ikoresheje synthesis ya Williamson ether ukoresheje sodium hydroxide nka catalizator, inzira ikunze guhura nibibazo nko kubyara umusaruro, kutagira ingufu, hamwe nibidukikije. Iterambere rya vuba muri chimie ya catalitiki na injeniyeri yicyatsi cyafunguye inzira nshya: reaction itaziguye ya okiside ya Ethylene hamwe na fenol kugirango itange isuku ryinshi, cosmetike yo mu rwego rwo kwisiga. Iri shyashya risezeranya gusobanura ibipimo ngenderwaho by’inganda mu kuzamura iterambere rirambye, rinini, kandi rihendutse.

Inzitizi muburyo busanzwe

Synthesis ya classique ya phenoxyethanol ikubiyemo reaction ya fenol hamwe na 2-chloroethanol mubihe bya alkaline. Nubwo bifite akamaro, ubu buryo butanga sodium ya chloride nkibicuruzwa, bisaba intambwe nini yo kwezwa. Byongeye kandi, gukoresha abahuza chlorine bitera ibibazo by’ibidukikije n’umutekano, cyane cyane bijyanye n’inganda zo kwisiga zihindura amahame ya “green chemistry”. Byongeye kandi, kugenzura imyitwarire idahuye akenshi biganisha ku mwanda nkibikomoka kuri polyethylene glycol, bibangamira ubuziranenge bwibicuruzwa no kubahiriza amabwiriza.

Guhanga udushya

Iterambere riri mu ntambwe ebyiri za catalitiki ikuraho reagent ya chlorine kandi igabanya imyanda:

Igikorwa cya Epoxide:Ethylene oxyde, epoxide ikora cyane, ikingura impeta imbere ya fenol. Cataliste ya acide itandukanye (urugero, acide sulfonique ishyigikiwe na zeolite) yorohereza iyi ntambwe munsi yubushyuhe bworoheje (60-80 ° C), ikirinda ibintu bitwara ingufu.

Gutoranya Guhitamo:Cataliseri iyobora reaction kubyerekeranye na fenoxyethanol mugihe ihagarika polymerisiyasi. Sisitemu igezweho yo kugenzura, harimo tekinoroji ya microreactor, yemeza ubushyuhe nyabwo nubuyobozi bwa stoichiometric, kugera ku gipimo cya 95%.

Ibyiza byingenzi byuburyo bushya

Kuramba:Mugusimbuza chlorine prursors na okiside ya Ethylene, inzira ikuraho imigezi yangiza. Kuba cataliste yongeye gukoreshwa bigabanya gukoresha ibikoresho, bigahuza nintego zubukungu bwizunguruka.

Isuku n'umutekano:Kubura ioni ya chloride bituma hubahirizwa amategeko akomeye yo kwisiga (urugero, Amabwiriza yo kwisiga y’ubumwe bw’ibihugu by’Uburayi No 1223/2009). Ibicuruzwa byanyuma byujuje> 99.5% byera, birakenewe muburyo bworoshye bwo kuvura uruhu.

Ubukungu bukora neza:Intambwe yoroshye yo kweza hamwe ningufu zisaba ingufu zigabanya ibiciro byumusaruro ~ 30%, bitanga inyungu zipiganwa kubabikora.

Inganda

Ibi bishya bigeze mugihe cyingenzi. Hamwe n’isi yose ikenera phenoxyethanol biteganijwe ko iziyongera kuri 5.2% CAGR (2023–2030), bitewe n’imyenda yo kwisiga kama n’ibinyabuzima, abayikora bahura n’igitutu cyo gukurikiza ibidukikije byangiza ibidukikije. Amasosiyete nka BASF na Clariant yamaze kugerageza sisitemu isa na catalitiki, avuga ko yagabanije ibirenge bya karubone kandi byihuse ku isoko. Byongeye kandi, uburyo bwakoreshwa neza bushyigikira umusaruro wegerejwe abaturage, bigafasha urunigi rwogutanga uturere no kugabanya ibyuka bihumanya ikirere.

Ibizaza

Ubushakashatsi burimo gukorwa bwibanda kuri bio-ishingiye kuri Ethylene oxyde ikomoka kubutunzi bushya (urugero, Ethanol y'ibisheke) kugirango irusheho kwangiza inzira. Kwishyira hamwe hamwe na AI iterwa na reaction ya optimizasiyo irashobora kongera umusaruro uteganijwe hamwe nubuzima bwa catalizator. Iterambere nkiryo ryerekana synthesis ya phenoxyethanol nkicyitegererezo cyo gukora imiti irambye murwego rwo kwisiga.

Umwanzuro

Sintezike ya catalitiki ya phenoxyethanol iva kuri okiside ya Ethylene na fenol irerekana uburyo guhanga udushya mu ikoranabuhanga bishobora guhuza imikorere yinganda no kwita kubidukikije. Mugukemura imbogamizi zuburyo bwumurage, ubu buryo ntabwo bwujuje gusa ibisabwa bigenda byiyongera kumasoko yo kwisiga ahubwo binashyiraho ibipimo ngenderwaho bya chimie yicyatsi mubukora imiti yihariye. Mugihe ibyifuzo byabaguzi bikomeje gushyira imbere kuramba, iterambere nkiryo rizakomeza kuba ingenzi mu iterambere ry’inganda.

Iyi ngingo irerekana ihuriro rya chimie, injeniyeri, hamwe niterambere rirambye, itanga icyitegererezo cyo guhanga udushya munganda zo kwisiga.