Conteleddlese, e leng matla a manyolo a mangata ka ho fetisisa lefatšeng, a etsa karolo ea bohlokoa ea lisebelisoa tsa indasteri le tsa indasteri. Ho sa tšepahale ka mokhoa o tsotehang ho beha mathata bakeng sa ho putlama ha sona se sebetsang, ho bohlokoa bakeng sa lits'ebetso tse kang tlhahiso ea BioFel le taolo ea litšila. Hydrogen peroxide (H2O2) e hlahile e le mokhethoa oa khefu ea cellulose ka lebaka la tlhaho ea eona ea tikoloho le thepa ea oxdizing.
SELELEKELA:
Contelulose, Polysaccharide e entsoe ka likarolo tsa glucose e amanang le Β-1,4-gycosidic Bonds, ke karolo e kholo ea mekha e ka sehloohong ea Cell Cell Cell Cell. Bongata ba eona ho biomass e etsa sesebelisoa se monate bakeng sa indasteri e seng e fapaneng, ho kenyelletsa pampiri le makhasi le biolonegy. Leha ho le joalo, mabenkele a mangata a holisoa a hydrojene ka har'a litheolelo tsa cellulose litheolelo tsa dissolution ka li-soerization tse ngata le ho ngola bocha.
Mekhoa ea setso ea ho felisoa ha setso ea cellulose e kenyelletsa maemo a thata, a kang acid ea anids kapa lino tse seng li amana le matšoenyeho a tikoloho le a matla a phahameng. Ho fapana le moo, pero ea pero ea hydrogen e fana ka mofuta o mong o tšepisang ka lebaka la tlhaho ea eona e bonolo le phaello ea eona e bonolo le bokhoni ba ts'ebetso e ntle ea setlou. Letlapa lena le lora ka mechini e sa sebetseng hantle ea mus ea hydrogen ea celdrogen-buluu e ngotsoeng ka celdrogention le ho lekola katleho ea eona le lits'ebetso tse sebetsang.
Mekhoa ea ho qhalana ha celluloulose ka hydrogen Peroxide:
Khethollo ea cellulose ea cellulose ea hydrogen Peroxide e kenyelletsa maikutlo a rarahaneng a lik'hemik'hale, haholo-holo a ho ts'oaroa ha li-glycsidic. Ts'ebetso hangata e tsoela pele ka mehato e latelang:
Oxidation ea lihlopha tsa hydropyl Li-radicals tsena li hlasela litlamo tsa glycsidic, qalo ea ketane ea tšepe le libapali tse khutšoane tsa celser celler celsilose celsilose.
Ho senyeha ha hydrojene ho boetse hoa senya netweke ea hydrojene pakeng tsa celloulose marokeleng, e fokolisang semotso ka kakaretso le ho tsamaisana le ho tsamaisa.
Sebopeho sa li-burrivatives tsa qubu ea qubu ea qubu ea litsotsi tsa cellulose e fella ka ho theha mekhotlo e qhibilihang ea metsi, e kang li-acid tsa carboxlic, lialdehyde le li-adomys. Lintho tsena tse entsoeng ke tsena li kenya letsoho ts'ebetsong ea ho felisoa ka ho eketseha le ho fokotsa pono.
Tlhahiso le phatlono ea maikutlo le lintho tse ling tse oxidation le litekanyetso tse hlakileng li lebisa ho li-fiines tsa lisele tse khutšoane kapa lihlahisoa tse ling tse qhibilihang tsa lisele.
Lintho tse amanang le pherekano ea celdrogen e ngotsoeng ka mpeng e ngotsoeng.
Phetoho ea ho felisoa ha kululose u sebelisa hydrogen Peroxide e susumetsoa ke lintlha tse fapaneng, ho kenyelletsa:
Khatello ea Hydrogen Perovagen: Mehopolo e phahameng ea phepelo ea perodrojene ea mofuta oa haedrogen ea haedrogen e fella ka litheko tse potlakileng le tse ngata tse silafetseng. Leha ho le joalo, meabo e phahameng haholo e ka lebisa karabelo e itseng kapa lihlahisoa tse sa rateheng.
PH le mocheso: PH ea karabelo e amang maikutlo a hydroxy le botsitso ba li-cellulose. Hangata maemo a tloaelehileng a acid (ph 3-5) a khethoa ho ntlafatsa kutloano ea cellulose ntle le ho hlanya. Ntle le moo, mocheso o ama li-kinetics tse phahameng, tse nang le lithemparetjha tse phahameng ka ho sebelisa mokhoa oa ho qhala.
Ho ba teng ha li-catalyst Leha ho le joalo, khetho ea catalyst le mahloriso a eona e lokela ho ntlafatsoa ka hloko ho fokotsa karabelo ea lehlakoreng le ho netefatsa boleng ba sehlahisoa.
Ho fihlella ha morphology le kristale: Ho fihlella ha liketane tsa celdrogen Peroxide le sebopeho sa Hydroyl se susumetsoa ke morphology le sebopeho sa kristale. Libaka tse ling li ka ba kotsing ea ho nyonyeha haholo ho feta li-dormains tsa kristale, li na le morero kapa maano a phetoho ho ntlafatsa monyetla.
Melemo le likopo tsa hydrogen peroxide ea ho felisoa ha cellulose:
Fydrogen Peroxide e fana ka melemo e 'maloa bakeng sa senoelo se seng sa cellulose se bapisoang le mekhoa e tloaelehileng:
Khokahano ea tikoloho: Ho fapana le lik'hemik'hale tse thata tse kang li-solfic tsa acid kapa li-shurrogen peroxide 'me e sa tlohelloa ka metsing le oksijene tlasa maemo a bonolo. Sebopeho sena se nang le tikoloho se etsa hore e loketse ts'ebetso e tsitsitseng ea ts'ebetso le pherekano e litšila.
Maemo a fosahetseng a maiketsetso: Ho felisoa ha kukudron ho ka etsoa tlasa maemo a bonolo a mocheso le khatello ea motlakase.
Oxidation oxidation: Cleavage ea oxida e ka laoloang ke liketane tse ikhethileng ka thepa e itseng.
Lipehelo tsa ho fapana: Lits'ebetso tsa ho qhalana ha khetla e fumanoeng tsa hydrojene li na le lits'ebetso tse fumanehang lits'ebetsong tse fapaneng, lisebelisoa tse sebetsang, lisebelisoa tsa limela le kalafo ea metsi.
Liphephetso le Litaelo tsa Kamoso:
Leha e ne e le tšekamelo ea eona e tšepisang, e ngotsoeng hydrogen e ngotsoeng ea hydrogen e kopantsoe le celdrogen.
Selectivity and Yield: Achieving high yields of soluble cellulose derivatives with minimal side reactions remains a challenge, particularly for complex biomass feedstocks containing lignin and hemicellulose.
Ho qala ka bongata le ho hlophisa: Ho tšoaea liphoso tsa khetla ea hydrogen "
Nts'etsopele ea Catalyst: Moralo oa li-candrogen tsa ts'ebetso ea hydrogen Peroxide le temoso ea celdrozide li bohlokoa bakeng sa ho ntlafatsa li-sitalyst le li-sehlahisoa.
Litlhahiso tsa lihlahisoa tsa lihlahisoa tse fanoang ke lihlahisoa tse hlahisoang ke litheolelo tsa mlbrogen kapa li-acifice tse ngotsoeng ka bongata, li ka ntlafatsa ts'ebetso ea moruo le matla a moruo.
Hydrogen Peroxide e na le ts'episo e kholo ea pherekano e tala le e litšila e bolaeang cellulose Leha o na le mathata a sa feleng, boiteko ba ho etsa lipatlisiso bo tla ntlafatsa bokhoni le ho tsitsipana ha likotlo tsa pentadrogen.
Nako ea poso: AP-10-2024