Cov pa roj carbon reactivation yog cov txheej txheem tseem ceeb uas ua rau cov khoom siv carbon nrog cov khoom zoo adsorption thiab kev ua haujlwm saum npoo. Nws cov ntsiab lus yog nyob rau hauv kev tswj hwm microstructure thiab cov khoom siv tshuaj lom neeg ntawm cov pa roj carbon matrix los ntawm kev siv lub cev lossis tshuaj lom neeg, yog li ua tiav cov phiaj xwm tsim cov khoom siv. Thaum lub sij hawm cov pa roj carbon reactivation txheej txheem, thawj kauj ruam yog lub thermal decomposition thiab carbonization ntawm lub precursor tsim ib tug structural units ntawm carbon hexagonal rings uas randomly teem. Cov koog no muaj kev sib txuas los ntawm van der Waals rog thiab covalent daim ntawv cog lus los tsim thawj lub hauv paus carbon. Nyob rau theem no, cov khoom siv carbon feem ntau muaj qhov tshwj xeeb ntawm qhov chaw qis thiab kaw qhov pore qauv, xav tau kev txhim kho ntxiv ntawm nws qhov chaw sab hauv los ntawm cov txheej txheem ua kom.
Kev ua kom lub cev siv cov pa, carbon dioxide, lossis huab cua ua kom muaj zog. Nyob rau hauv qhov kub thiab txias ntawm 800-1100 degree, tus neeg sawv cev ua kom cov molecules raug oxidation cov tshuaj tiv thaiv nrog cov pa roj carbon atoms hauv cov pa roj carbon. Qhov kev xaiv etching no tshwm sim zoo dua ntawm qhov chaw muaj zog ntau dua hauv cov qauv carbon, piv txwv li qhov tsis xws luag, cov nyiaj tsis txaus ntseeg, thiab lwm yam. Raws li kev ua kom cov tshuaj tiv thaiv txuas ntxiv mus, qhov pib tsim micropores nthuav tawm txheej los ntawm txheej txheej los ntawm etching ntawm cov phab ntsa pore, thiab kev sib tshuam ntawm cov micropores uas nyob ib sab tsim mesopores, thaum kawg tsim ntau theem pore network tsim ntawm micropores, mesopores. Kev tswj xyuas meej ntawm kev ua kom kub thiab lub sij hawm yog qhov tseem ceeb hauv cov txheej txheem no: qhov kub thiab txias yuav ua rau qeeb ua kom cov tshuaj tiv thaiv kab mob thiab ua tsis tiav qhov pore; thaum kub dhau heev lawm yuav ua rau cov pa roj carbon ntau ntau ntawm cov pob txha hlawv, txo cov neeg kho tshuab lub zog thiab tawm los ntawm cov khoom.
Kev siv tshuaj lom neeg muaj feem cuam tshuam txog kev qhia cov tshuaj ua ntej lossis thaum lub sijhawm carbonization. Nws cov txheej txheem yog ntau dua li kev ua kom lub cev thiab suav nrog lub cev qhuav dej, catalytic, thiab etching teebmeem. Piv nrog rau kev ua kom lub cev, kev ua kom muaj tshuaj lom neeg muaj qhov zoo ntawm qhov ua kom qis dua thiab cov tshuaj tiv thaiv ntau dua, thiab kev qhia txog cov neeg ua haujlwm hloov cov tshuaj lom neeg ib puag ncig ntawm cov khoom siv carbon - piv txwv li, phosphoric acid activation tuaj yeem khaws cov pa ntau dua - muaj cov pab pawg ua haujlwm, thaum potassium hydroxide activation tends rau 4} electron.
Kev hloov kho saum npoo thaum lub sijhawm cov txheej txheem carbon reactivation yog lwm qhov tseem ceeb rau kev txhim kho cov khoom tshwj xeeb ntawm cov khoom. Nyob rau hauv qhov kub ntawm - qhov kub thiab txias ntawm qhov ua kom cov tshuaj tiv thaiv, qhov saum npoo ntawm cov khoom siv carbon tau raug tshuaj lom neeg nrog rau tus neeg ua haujlwm thiab cov pa roj impurity hauv cov huab cua, tsim cov pa oxygen- muaj cov pab pawg ua haujlwm rau piv txwv hydroxyl, carboxyl, thiab lwm yam, nrog rau me me ntawm nitrogen thiab sulfur pawg. Hom thiab ntau ntawm cov pab pawg ua haujlwm no ncaj qha cuam tshuam rau qhov chaw ntub dej, kev ua haujlwm ntawm electrochemical, thiab kev xaiv adsorption ntawm cov khoom siv carbon - piv txwv li, kev taw qhia ntawm carboxyl pawg tuaj yeem txhim kho cov khoom muaj peev xwm chelation rau hnyav hlau cations, thaum muaj pyridine - hom nitrogen tuaj yeem txhim kho nws cov kev ua haujlwm catalytic. Tsis tas li ntawd, qhov tsis xws luag ntawm qhov chaw (xws li ib qho chaw ua haujlwm, ob qhov chaw ua haujlwm, thiab qhov tsis xws li topological) tsim thaum lub sijhawm ua kom muaj ntau qhov chaw rau cov khoom siv, ua kom pom qhov zoo ntawm lub zog cia, hloov pauv catalytic, thiab lwm yam.
Los ntawm lub tshuab microscopic mus rau macroscopic kev ua tau zoo, kev txhim kho cov pa roj carbon reactivation technology yeej ib txwm ua raws li txoj cai sib raug ntawm "cov qauv - kev ua haujlwm - daim ntawv thov". Nrog rau kev siv cov txheej txheem zoo tshaj plaws xws li hluav taws xob synchrotron thiab aberration - kho electron microscopy, cov kws tshawb fawb tau nkag siab tob txog cov txheej txheem ntawm cov pore evolution thiab tsim cov txheej txheem ntawm cov pab pawg ua haujlwm saum npoo thaum lub sij hawm ua kom cov txheej txheem, muab kev qhia theoretical rau kev tswj cov microstructure ntawm cov ntaub ntawv carbon. Nyob rau hauv lub neej yav tom ntej, los ntawm ntau yam -scale simulation thiab txawj ntse kev sim tsim, carbon reactivation technology yuav txhim kho mus rau ib tug ntsuab thiab customized kev taw qhia, ntxiv nthuav nws daim ntawv thov ciam teb nyob rau hauv ib puag ncig tswj, tshiab zog, thiab siab - kawg manufacturing.