I-Green chemistry ithole ukunakwa okuphawulekayo eminyakeni yamuva nje ngenxa yokugxila kwayo emikhubeni eqhubekayo neyimvelo.Indawo eyodwa ebone inqubekelaphambili enkulu ukuthuthukiswa kanye nokusetshenziswa kwama-catalysts angakhuthaza ukusabela okuvumelana nemvelo.I-Tetrabutylammonium iodide (TBAI) iqhamuke njengenye yezinto ezikhuthazayo, nezindawo zayo ezihlukile eziyenza ibe ikhandidethi elikahle lokuphromotha ukuguqulwa kwamakhemikhali aluhlaza.
I-TBAI, enenombolo ye-CAS 311-28-4, usawoti we-quaternary ammonium owakhiwa i-tetraalkylammonium cation kanye ne-anion ye-iodide.Kuwuketshezi oluyikristalu olumhlophe oluncibilika kakhulu kuzincibilikisi zemvelo ezivamile.I-TBAI icutshungulwe kakhulu futhi yasetshenziswa njenge-catalyst ekuphenduleni okuhlukahlukene kwe-organic, okubonisa ukusebenza kahle kwayo nokuguquguquka ekukhuthazeni amakhemikhali aluhlaza.
Enye yezinzuzo ezibalulekile zokusebenzisa i-TBAI ikhono layo lokusheshisa amazinga okusabela ngenkathi inciphisa isidingo sezimo zokusabela ezinzima.Ukwakheka kwemvelo kwendabuko kuvame ukudinga amazinga okushisa aphezulu nezingcindezi, kanye nokusetshenziswa kwezinto ezinobuthi neziyingozi.Lezi zimo azigcini nje ngokuba yingozi endaweni ezungezile kodwa futhi ziholela ekukhiqizeni inqwaba yemfucuza.
Ngokuphambene, i-TBAI ivumela ukusabela ukuthi kuqhubeke kahle ezimweni ezithambile, ukunciphisa ukusetshenziswa kwamandla kanye nokunciphisa ukukhiqizwa kwemfucuza.Lokhu kunenzuzo ikakhulukazi ezinqubweni zesikali sezimboni, lapho ukwamukelwa kwezimiso zamakhemikhali aluhlaza kungaholela ekongeni kwezindleko ezibalulekile kanye nezinzuzo zemvelo.
I-TBAI isetshenziswe ngempumelelo ezinhlobonhlobo zezinguquko zamakhemikhali aluhlaza.Isetshenziswe njenge-catalyst ekuhlanganiseni kwezinhlanganisela ezihlukahlukene ze-organic, okuhlanganisa i-intermediate yemithi kanye namakhemikhali amahle.Ngaphezu kwalokho, i-TBAI ibonise isithembiso esikhulu ekukhuthazeni izinqubo ezivumelana nemvelo njengokuguqulwa kwe-biomass ibe ama-biofuels abalulekile kanye nokukhishwa kwe-oxidation okukhethiwe kwama-substrates aphilayo.
Izici eziyingqayizivele zeI-TBAIokwenza kube i-catalyst ephumelelayo ekuguqulweni kwamakhemikhali aluhlaza kulele ekhonweni layo lokusebenza kokubili njenge-catalyst yokudlulisa isigaba kanye nomthombo we-nucleophilic iodide.Njengesisusa sokudlulisa isigaba, i-TBAI isiza ukudluliswa kwama-reactants phakathi kwezigaba ezihlukene, ikhulise amazinga okusabela futhi ikhuthaze ukwakheka kwemikhiqizo efiswayo.Ukusebenza komthombo wayo we-nucleophilic iodide kuyivumela ukuthi ibambe iqhaza ekushintsheni okuhlukahlukene nokusabela kokwengeza, yethula ama-athomu e-iodine kuma-molecule ephilayo.
Ngaphezu kwalokho, i-TBAI ingatholwa kalula futhi igaywe kabusha, ithuthukise nokusimama kwayo.Ngemva kokuphothulwa kokusabela, i-TBAI ingahlukaniswa nengxube yokusabela futhi iphinde isetshenziselwe izinguquko ezilandelayo, ukunciphisa izindleko eziphelele ze-catalyst kanye nokunciphisa izinkinga zokulahlwa kwemfucuza.
Ukusetshenziswa kwe-TBAI njengesisusa soguquko lwamakhemikhali aluhlaza kuyisibonelo esisodwa sendlela abacwaningi nochwepheshe bemboni abaqhubeka ngayo besebenzela ukuthuthukiswa kwezinqubo ezizinzile.Ngokusebenzisa ama-catalysts asebenzayo, asebenzayo, futhi angavumelani nemvelo, singanciphisa kakhulu umthelela wemvelo wezinqubo zamakhemikhali, sizenze zisimame futhi zisimeme.
Ekuphetheni,I-Tetrabutylammonium iodide (TBAI)kuye kwavela njengesisusa esinamandla soguquko oluningi lwamakhemikhali aluhlaza.Ikhono layo lokusheshisa izilinganiso zokusabela, ukugqugquzela ukusabela kwe-eco-friendly, kanye nokutholakala kalula futhi kusetshenziswe kabusha kuyenza ibe ikhandidethi ekahle yokukhuthaza izinqubo ezisimeme nezihambisana nemvelo.Njengoba abacwaningi nezingcweti zemboni beqhubeka nokuhlola nokwenza ngcono izinhlelo ze-catalytic, singalindela ukubona intuthuko enkulu nakakhulu emkhakheni wamakhemikhali aluhlaza, sishintsha indlela esibhekana ngayo ne-organic synthesis kuyilapho sinciphisa umthelela wendawo.
Isikhathi sokuthumela: Jul-27-2023