I. Ukusuka kwiFurful to Golden Solvent
I-synthesis ye-2-methyltetrahydrofuran (2-MeTHF) ifana nomlingo wokuguqula izikhwebu zombona zibe yimathiriyeli yexabiso. Inkqubo yesiqhelo isebenzisa i-biomass-derived furfural as the raw material kwaye ifezekisa uguqulo ngokusabela ngamanyathelo amathathu:
I-Decarbonylation: I-Furfural iguqulwa ibe yi-2-furfural kwi-200-250℃usebenzisa i-zinc oxide catalyst.
I-Hydrogenation ekhethiweyo: Ubhedu{0}}i-chromium catalyst kwi-3 MPa iguqula iringi ye-furan ibe yi-tetrahydrofuran.
I-Distillation kunye nokuCoca: I-98% yemveliso ecocekileyo ifunyenwe emva kokuphelelwa ngamanzi kunye ne-molecular sieves.
II. Ukuphumelela okutsha kwiiNkqubo zoHlaza
Inyathelo lemveli le-hydrogenation lifuna i-catalysts yentsimbi exabisekileyo, kodwa uphando lwakutsha nje ("Iinkqubo eziHlaza") lubonise ukuba le nkqubo ingasetyenziselwa ukuphucula umgangatho we-2 - MeTHF. IKhemistri (2022) isebenzisa i-nano-iron catalyst:
Ubushushu bokusabela buncitshiswe ngama-40 ukuya kwi-180 degree
Uxinzelelo oluncitshisiweyo ukusuka kwi-3 MPa ukuya kwi-1.5 MPa
Isivuno sinyuke saya kutsho kuma-92% (inkqubo eqhelekileyo 85%)
Iindleko zeCatalyst zehliswe ngama-60%
III. IiPropathi zokunyibilikisa eziNyenyeneyo
Olulwelo olumthubi luluthuthu lungathatha indawo ye-THF yesintu kunye ne-n-ihexane ngenxa yokuba:
Yenza ubuncinci be-azeotrope ngamanzi (indawo yokubilisa i-71 degree)
Iimpawu zokhuseleko ezinendawo ye-flash point ye-11℃(ikomityi evaliweyo)
Ukunyibilika kokubini kwindalo nakwizinto ezingezizo{0}zendalo
I-Biodegradability ngokuphindwe kathathu ngaphezulu kweTHF
Okuphezulu -ukucoceka kwe-2-MeTHF-3-enye, isiseko kwiilabhoratri, ifakwe kwimigqomo yentsimbi etywiniweyo. I-molecular formula C₅H₅O₂ ibonakala ngokucacileyo, kwaye i-98% yesithako esisebenzayo siqinisekisa ukuzinza kokuphendula. Indawo edanyazayo ye-103℃F ibonisa ukuba kufuneka igcinwe kwindawo epholileyo neyomileyo.
