Video: Dab tsi yog graphite carbon?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Graphite (/ˈgræfa?t/), archaically hu ua plumbago, yog ib daim ntawv crystalline ntawm lub caij carbon nrog nws cov atoms teem nyob rau hauv ib tug hexagonal qauv. Nws tshwm sim ib txwm nyob rau hauv daim ntawv no thiab yog daim ntawv ruaj khov tshaj plaws ntawm carbon nyob rau hauv tus txheej txheem. Graphite yog siv rau hauv cov xaum thiab cov roj nplua nyeem.
Ntawm no, carbon graphite siv rau dab tsi?
Siv . Cov pa roj carbon graphite yog ib tug zoo conductor ntawm hluav taws xob thiab muaj siab refractory qualities, lub ntsiab lus nws sawv zoo mus rau high kub thiab hnav. Vim li no, flake graphite yog siv los tsim cov roj teeb qhuav-cell, carbon electrodes, daim hlau thiab txhuam hauv kev lag luam hluav taws xob.
Ib tug kuj yuav nug, dab tsi yog qhov txawv ntawm graphite thiab carbon? Cov pa roj carbon yog ib yam. Graphite yog ib qho allotrope ntawm carbon . Qhov no txhais tau tias graphite yog ua los ntawm carbon npaj hauv a txoj kev tshwj xeeb. Koj tuaj yeem npaj tau carbon atoms rau hauv lwm cov ntaub ntawv (allotropes) zoo li pob zeb diamond thiab fullerenes.
Kuj tseem paub yog, carbon graphite yog dab tsi?
Graphite yog ua los ntawm dawb huv carbon . Cov pa roj carbon atoms muaj peev xwm tsim cov ntawv cog lus uas tsim ntau cov qauv sib txawv. Pob zeb diamond thiab graphite yog ob ntawm cov ntaub ntawv zoo tshaj plaws (allotropes) ntawm carbon.
Qhov feem pua ntawm carbon hauv graphite yog dab tsi?
Nws yog tsim los ntawm ncaj qha deposition ntawm cov khoom, graphitic carbon los ntawm subterranean, kub kub kua. Qib ntawm cov hlab ntsha graphite feem ntau yog siab dua 90% Cg, nrog rau kev purity ntawm 95-99% carbon tsis refining.
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Graphite muaj cov qauv loj heev uas: txhua cov pa roj carbon atom tau koom nrog peb lwm cov pa roj carbon atom los ntawm covalent bonds. cov pa roj carbon atoms tsim cov khaubncaws sab nraud povtseg nrog hexagonal kev npaj ntawm atoms. cov txheej muaj zog tsis muaj zog ntawm lawv. Txhua cov pa roj carbon atom muaj ib qho uas tsis yog-bonded sab nraud electron, uas dhau los ua delocalised
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