Graphitization ea catalytic ke theknoloji eo, nakong ea ho lokisa thepa ea khabone, e sebelisang li-catalyst tse itseng (tse kang tšepe, ferrosilicon, boron, jj.) ho nolofatsa phetoho ea khabone e sa fetoheng sebopehong sa graphite mochesong o tlase.
Molao-motheo oa Tekheniki
Motheo oa catalytic graphitization o ho sebeliseng li-catalyst ho fokotsa matla a ts'ebetso ea karabelo ea graphitization, ka hona ho potlakisa phetoho ea liathomo tsa carbon ho tloha tokisetsong e sa tsitsang ho ea sebopehong se hlophisitsoeng sa graphite. Mekhoa e kenyelletsa haholo-holo likhopolo tse peli:
Mokhoa oa ho Qhibiliha le ho Pula:
Khabone e sa fetoheng e qhibiliha motswakong o qhibilihisitsoeng o entsoeng ke catalyst. Ha ho qhibiliha ho fihla boemong ba ho tlala haholo, liathomo tsa khabone lia fela ka mokhoa oa likristale tsa graphite.
Mohlala, sesebelisoa sa ho baka khabone sa ferrosilicon se ka qhala ho fihlela ho 2% ea khabone mochesong oa 1600°C, e leng se etsang hore khabone e potolohe e le graphite. Ka nako e ts'oanang, ho thehoa ha meaho ea carbide ea silicon e nang le mahlakore a tšeletseng ho thusa ho thehoa ha graphite.
Mokhoa oa ho Hlahisa le ho Bola ha Carbide:
Sesebediswa sena se arabela le khabone ho etsa dikhabide, tse bolang ho ba graphite le mouoane wa tshepe mochesong o phahameng.
Mohlala, oxide ea tšepe e arabela le carbon ho hlahisa tšepe le carbon monoxide. Tšepe e ntan'o kopana le carbon ho etsa carbide ea tšepe, e qetellang e bola ho ba carbon le tšepe tse ka sebelisoang habonolo.
Mefuta ea Catalyst le Litlamorao
Sehokelo sa Ferrosilicon:
- Sekhahla se setle sa silicon ke 25%, e leng se ka fokotsang mocheso oa graphitization ho tloha ho 2500-3000°C ho isa ho 1500°C.
- Boholo ba dikarolwana tsa ferrosilicon bo ama phello ya catalytic: ha boholo ba dikarolwana bo fokotseha ho tloha ho 75 μm ho ya ho 50 μm, resistivity ya motlakase e a fokotseha. Leha ho le jwalo, dikarolwana tse nyane haholo (<50 μm) di ka lebisa keketsehong ya resistivity.
Sehokelo sa Boron:
- E ka fokotsa mocheso oa graphitization ho ea ka tlase ho 2200°C le ho ntlafatsa tekanyo ea tataiso ea likhoele tsa carbon.
- Mohlala, ho eketsa 0.25% boric acid ho filimi ea graphene e nang le oxidized le ho e futhumatsa ka mocheso oa 2000°C ho eketsa conductivity ea motlakase ka 47% le tekanyo ea graphitization ka 80%.
Sesebediswa sa Tshepe:
- Tšepe e na le ntlha ea ho qhibiliha ea 1535°C. Ha silicon e eketsoa, ntlha ea ho qhibiliha e theohela ho hoo e ka bang 1250°C, 'me ketso ea ho kopanya e qala mochesong ona.
- Tšepe e tsoa ka sebopeho sa khase ho 2000°C, ha silicon e tsoa e le mouoane o fetang 2240°C, e sa siee masalla sehlahisoa sa ho qetela.
Melemo ea Tekheniki
Poloko ea Matla:
Ho etsa graphitization ya setso ho hloka mocheso o phahameng wa 2000-3000°C, athe ho etsa graphitization ya catalytic ho ka fokotsa mocheso ho ya ho hoo e ka bang 1500°C, e leng se bolokang matla haholo.
Potoloho e Khutšoanyane ea Tlhahiso:
Ketso ea catalytic e potlakisa ho hlophisoa bocha ha liathomo tsa carbon, e khutsufatsa nako ea graphitization.
Tshebetso e Ntlafalitsoeng ea Lintho tse Boleng:
Ho sebelisa graphitization ea catalytic ho ka lokisa liphoso tsa sebopeho le ho eketsa tekanyo ea graphitization, ka hona ho ntlafatsa conductivity ea motlakase, conductivity ea mocheso, le matla a mechini.
- Mohlala, graphitization e susumetsoang ke boron e hlahisa lifilimi tsa graphene tse nang le motlakase oa motlakase oa 3400 S/cm, tse loketseng lits'ebetsong tsa lisebelisoa tsa elektroniki tse tenyetsehang le tšireletso ea tšitiso ea motlakase.
Libaka tsa Kopo
Lisebelisoa tsa Electrode:
Li-electrode tsa graphite tse lokisitsoeng ka graphitization ea catalytic li bontša conductivity e phahameng ea motlakase le ho hanyetsa mocheso, e leng se etsang hore li lokele liindasteri tse kang metallurgy le electrochemistry.
Lisebelisoa tsa Polokelo ea Matla:
Lisebelisoa tsa khabone tse nang le grafiti li sebelisoa e le li-anode libetering tsa lithium/sodium, ho ntlafatsa bokhoni bo itseng ba ho ntša tjhaja le botsitso ba potoloho.
Lisebelisoa tse kopantsoeng:
Theknoloji ea catalytic graphitization e ka hlahisa thepa e kopaneng ea carbon/carbon e sebetsang hantle bakeng sa tšebeliso ea lifofane, tlhahiso ea likoloi le masimo a mang.
Liphephetso tsa Tekheniki
Khetho le Ntlafatso ea Catalyst:
Li-catalyst tse fapaneng li bontša litlamorao tse fapaneng haholo tsa ho baka, e leng se hlokang khetho ea li-catalyst tse loketseng ho latela mofuta oa thepa le maemo a ts'ebetso.
Mathata a Masalla a Catalyst:
Li-catalyst tse ling (tse kang vanadium) li na le lintlha tse phahameng tsa ho qhibiliha 'me ho thata ho li tlosa ka botlalo kamora ho sebelisa graphitization, e leng se ka amang bohloeki ba thepa.
Taolo ea Ts'ebetso:
Ho etsa graphitization ea catalytic ho ela hloko liparamente tse kang mocheso, sepakapaka le nako, ho hloka taolo e nepahetseng ho qoba ho etsa graphitization e feteletseng kapa ho se lekane ha graphitization.
Nako ea poso: Mphalane-09-2025