Isetshenziselwa ini i-gamma-valerolactone?
I-Y-valerolactone (GVL), isakhi semvelo esincibilika emanzini engenambala, sidonse ukunaka okukhulu eminyakeni yamuva nje ngenxa yobubanzi bayo bezinhlelo zokusebenza. I-cyclic ester, ikakhulukazi i-lactone, enefomula ethi C5H8O2. I-GVL ibonakala kalula ngephunga layo elihlukile kanye nokunambitha.
I-GVL isetshenziswa ngokuyinhloko njenge-solvent ezimbonini ezihlukahlukene ezihlanganisa ezemithi, izimonyo, ezolimo kanye namakhemikhali e-petrochemicals. Izakhiwo zayo eziyingqayizivele nobuthi obuphansi bukwenza kube yisinqumo sokuqala sokushintsha izincibilikisi zendabuko ezingase zibe yingozi empilweni yomuntu noma endaweni ezungezile. Ngaphezu kwalokho, i-GVL iphinde isetshenziswe njengesandulela sokuhlanganiswa kwezinhlanganisela ezibalulekile.
Enye yezinhlelo zokusebenza ezibalulekile ze-GVL isembonini yezemithi njengesinyibilikisi esimeme nesisebenza kahle. Izidakamizwa eziningi nezithako ezisebenzayo zemithi (ama-API) ziyahlanganiswa futhi zenziwa kusetshenziswa izincibilikisi eziphilayo. Ngenxa yezakhiwo zayo ezithandekayo, i-GVL isiphenduke enye indlela ethembisayo yezincibilikisi ezivame ukusetshenziswa njenge-dimethyl sulfoxide (DMSO) ne-N,N-dimethylformamide (DMF). Ingancibilikisa izinhlobonhlobo zezidakamizwa nama-API, yenze kube lula ukuhlanganiswa kwayo nokwakheka kuyilapho inciphisa izingozi ezingaba khona ezihlobene nezinye izincibilikisi.
Embonini yezimonyo,GVLisetshenziswa njenge-solvent eluhlaza ngezinjongo ezihlukahlukene. Okuvame ukusetshenziswa ekukhishweni, ekuhlanzeni nasekuhlanganiseni izithako zezimonyo. I-GVL inikeza isisombululo esivumelana nemvelo kunezincibilikisi zendabuko, ezivame ukukhiqiza imikhiqizo eyingozi. Iphunga layo elipholile kanye namandla aphansi okucasuka kwesikhumba nakho kuyenza ibe ukukhetha okuphephile ekwenziweni kwezimonyo.
Ezolimo ngomunye umkhakha wokufaka isicelo se-GVL. Isetshenziswa njenge-solvent emikhiqizweni yokulawula izinambuzane, ama-herbicides nama-fungicides. I-GVL ingancibilikisa kahle futhi ilethe lezi zithako ezisebenzayo entweni ephilayo eqondiwe kuyilapho inciphisa imiphumela engemihle emibi. Ukwengeza, umfutho we-vapor ophansi kanye nephuzu eliphezulu lokubilisa le-GVL liyenza ifanele ukwakhiwa nokulethwa kwamakhemikhali ezolimo.
Ukuhlukahluka kwe-GVL kudlulela nasembonini ye-petrochemical. Isetshenziswa njengesixazululi kanye ne-co-solvent ezinqubweni ezehlukene, okuhlanganisa nokukhipha amakhemikhali abalulekile ku-biomass kanye ne-feedstocks etholakala ku-petroleum.GVLibonise amandla okusebenza ekukhiqizweni kwama-biofuels namakhemikhali avuselelekayo, ihlinzeka ngezinye izindlela eziluhlaza nezisimeme emikhiqizweni ye-petroleum.
Ngaphezu kokuba yi-solvent, i-GVL ingasetshenziswa njengesiqalo sokuhlanganiswa kwezinhlanganisela ezibalulekile. Ingaguqulwa ngamakhemikhali ibe yi-gamma-butyrolactone (GBL), inhlanganisela esetshenziswa kabanzi ekukhiqizeni ama-polymers, ama-resin kanye nemithi. Ukuguqulwa kwe-GVL kuya ku-GBL kuhilela inqubo elula nephumelelayo, okuyenza ibe ikhandidethi elikhangayo lezicelo zezimboni.
Ngamafuphi, i-γ-valerolactone (GVL) iyinhlanganisela yezinto eziphilayo ehlukahlukene enezinhlobonhlobo zokusetshenziswa. Ngenxa yobuthi bayo obuphansi nokusebenza kahle, ukusetshenziswa kwayo njengesixazululi embonini yezemithi, yezimonyo, yezolimo neye-petrochemical kuye kwathuthukiswa kakhulu. I-GVL inikeza ezinye izindlela ezisimeme nezisebenza kahle ezincibilikisayo zendabuko, ezikhuthaza izindlela eziluhlaza neziphephile. Ngaphezu kwalokho, ama-GVL angaguqulelwa abe yizinhlanganisela ezibalulekile, ngokuqhubekayo kuthuthukise ukuguquguquka kwawo kanye nenani lezomnotho. Amandla nokubaluleka kwe-GVL kulindeleke ukuthi kukhule eminyakeni ezayo njengoba izimboni ziqhubeka nokufuna izixazululo ezisimeme.
Isikhathi sokuthumela: Aug-25-2023