Yintoni iteknoloji "ye-catalytic graphitization"?

I-Catalytic graphitization yiteknoloji ethi, ngexesha lokulungiselela izinto zekhabhoni, isebenzise ii-catalysts ezithile (ezifana ne-iron, i-ferrosilicon, i-boron, njl.njl.) ukuze kube lula ukuguqulwa kwekhabhoni engenasimo sibe yi-graphite kwiqondo lobushushu eliphantsi.

Umgaqo woBugcisa

Eyona nto iphambili kwi-catalytic graphitization ikukusebenzisa ii-catalysts ukunciphisa amandla okusebenza kwe-graphitization reaction, ngaloo ndlela kukhawuleziswe ukuguquka kwee-athomu zekhabhoni ukusuka kwilungiselelo elingacwangciswanga ukuya kwisakhiwo se-graphite esicwangcisiweyo. Iindlela ziquka ikakhulu iingcamango ezimbini:

Indlela yokuNcibilikisa kunye nokuNa:

Ikhabhoni e-Amorphous iyanyibilika kumxube onyibilikisiweyo owenziwe yi-catalyst. Xa i-melt ifikelela kwimeko yokugcwala kakhulu, ii-athomu zekhabhoni ziyaphuma ngendlela yeekristale zegrafiti.
Umzekelo, i-ferrosilicon catalyst inokunyibilika ukuya kuthi ga kwi-2% yekhabhoni kwi-1600°C, nto leyo ebangela ukuba ikhabhoni ijike njenge-graphite. Kwangaxeshanye, ukwakheka kwezakhiwo ze-silicon carbide ezineehexagonal kunceda ekwakhiweni kwe-graphite.

Indlela Yokwenziwa Nokubola KweCarbide:

I-catalyst isabela kunye nekhabhoni ukuze yenze ii-carbides, ezibola zibe yi-graphite kunye nomphunga wesinyithi kumaqondo obushushu aphezulu.
Umzekelo, i-iron oxide idibana nekhabhoni ukuze ivelise i-iron kunye nekhabhoni monoxide. I-iron emva koko idibana nekhabhoni ukuze yenze i-iron carbide, ethi ekugqibeleni ibole ibe yikhabhoni kunye ne-iron ezikwaziyo ukufotwa lula.

Iintlobo zeCatalyst kunye neziphumo

Isincedisi seFerrosilicon:

• Umxholo we-silicon ofanelekileyo yi-25%, nto leyo enokunciphisa ubushushu be-graphitization ukusuka kwi-2500-3000°C ukuya kwi-1500°C.
• Ubungakanani besuntswana le-ferrosilicon buchaphazela isiphumo se-catalytic: xa ubungakanani besuntswana buncipha ukusuka kwi-75 μm ukuya kwi-50 μm, ukumelana nombane kuyehla. Nangona kunjalo, amasuntswana amancinci kakhulu (<50 μm) anokubangela ukwanda kokuchasana.

I-Boron Catalyst:

• Inganciphisa ubushushu begrafitis ukuya ngaphantsi kwe-2200°C kwaye iphucule inqanaba lokujongwa kweefayibha zekhabhoni.
• Umzekelo, ukongeza i-0.25% ye-boric acid kwifilimu ye-graphene e-oxidized kunye nokuyiphatha ngobushushu kwi-2000°C kunyusa umbane nge-47% kunye ne-graphitization degree nge-80%.

Isincedisi sesinyithi:

• I-iron ineqondo lokunyibilika eliyi-1535°C. Xa i-silicon yongezwa, iqondo lokunyibilika liyehla liye kuma-1250°C, kwaye isenzo sokuvuselela siqala kobu bushushu.
• Intsimbi iphuma kwimo yegesi kwi-2000°C, ngelixa i-silicon iphuma njengomphunga ongaphezulu kwe-2240°C, ingashiyi ntsalela kwimveliso yokugqibela.

Iingenelo zobugcisa

Ukonga Amandla:

Ukwenziwa kwegrafiti yendabuko kufuna amaqondo obushushu aphezulu angama-2000-3000°C, ngelixa ukwenziwa kwegrafiti ye-catalytic kunokunciphisa amaqondo obushushu abe malunga ne-1500°C, oko konga kakhulu amandla.

Umjikelo Wemveliso Omfutshane:

Isenzo se-catalytic sikhawulezisa ukuhlelwa kwakhona kwee-athomu zekhabhoni, sinciphisa ixesha le-graphitization.

Ukusebenza Okuphuculweyo Kwezinto Ezibonakalayo:

I-Catalytic graphitization inokulungisa iziphene zesakhiwo kwaye yonyuse izinga le-graphitization, ngaloo ndlela iphucula ukuhanjiswa kombane, ukuhanjiswa kobushushu, kunye namandla oomatshini.

• Umzekelo, i-graphitization ebangelwa yi-boron ivelisa iifilimu ze-graphene ezinombane oqhuba i-3400 S/cm, ezifanelekileyo kwizicelo ze-elektroniki eziguquguqukayo kunye nokukhusela ukuphazamiseka kwe-electromagnetic.

Iindawo zoSetyenziso

Izixhobo ze-Electrode:

Ii-electrode zegrafiti ezilungiselelwe nge-catalytic graphitization zibonisa umbane ophezulu kunye nokumelana nobushushu, nto leyo eyenza ukuba zifaneleke kumashishini afana ne-metallurgy kunye ne-electrochemistry.

Izixhobo zokugcina amandla:

Izixhobo zekhabhoni ezifakelwe igrafiti zisetyenziswa njengee-anode kwiibhetri ze-lithium/sodium, nto leyo ephucula amandla athile okukhupha itshaja kunye nokuzinza komjikelo.

Izinto ezidityanisiweyo:

Itekhnoloji ye-catalytic graphitization inokuvelisa izixhobo ze-carbon/carbon composite ezisebenza kakuhle ukuze zisetyenziswe kwi-aerospace, kwimveliso yeemoto, nakwezinye iindawo.

Imingeni yoBugcisa

Ukukhethwa kweCatalyst kunye noLungiso:

Iikhatalyst ezahlukeneyo zibonisa iziphumo ezahlukeneyo zokutsala izinto, nto leyo ebangela ukuba kukhethwe iikhatalyst ezifanelekileyo ngokusekelwe kuhlobo lwezinto kunye neemeko zenkqubo.

Iingxaki zeCatalyst Residue:

Ezinye ii-catalysts (ezifana ne-vanadium) zinendawo zokunyibilika eziphezulu kwaye kunzima ukuzisusa ngokupheleleyo emva kokufakelwa kwe-graphitization, nto leyo enokuchaphazela ubunyulu bezinto.

Ulawulo lweNkqubo:

I-Catalytic graphitization inovelwano kwiiparameter ezifana nobushushu, umoya, kunye nexesha, nto leyo efuna ulawulo oluchanekileyo ukuze kuthintelwe i-over-graphitization okanye i-graphitization enganeleyo.