Qhov sib txawv ntawm graphite thiab carbon ntawm cov pa roj carbon monoxide yog nyob rau hauv txoj kev uas cov pa roj carbon tsim nyob rau hauv txhua qhov teeb meem.Cov pa roj carbon atoms sib txuas hauv chains thiab rings.Hauv txhua cov khoom siv carbon, ib qho kev tsim tshwj xeeb ntawm carbon tuaj yeem tsim tau.
Carbon tsim cov khoom softest (graphite) thiab cov khoom hardest (pob zeb diamond).Qhov sib txawv tseem ceeb ntawm cov pa roj carbon monoxide yog nyob rau hauv txoj kev uas cov pa roj carbon tsim nyob rau hauv txhua qhov teeb meem.Cov pa roj carbon atoms sib txuas hauv chains thiab rings.Hauv txhua cov khoom siv carbon, ib qho kev tsim tshwj xeeb ntawm carbon tuaj yeem tsim tau.
Cov khoom no muaj peev xwm tshwj xeeb los tsim cov ntawv cog lus thiab cov khoom sib txuas los ntawm nws tus kheej, muab nws lub peev xwm los npaj thiab rov kho nws cov atoms.Ntawm tag nrho cov ntsiab lus, carbon tsim ntau tshaj plaws ntawm cov tebchaw - nyob ib ncig ntawm 10 lab formations!
Cov pa roj carbon monoxide muaj ntau yam kev siv, ob qho tib si ua cov pa roj carbon ntshiab thiab cov pa roj carbon.Feem ntau, nws ua raws li hydrocarbons nyob rau hauv daim ntawv ntawm methane roj thiab crude roj.Cov roj ntsha tuaj yeem muab faib ua roj av thiab roj av.Ob yam khoom siv ua roj rau kev sov so, tshuab, thiab lwm yam.
Cov pa roj carbon kuj yog lub luag haujlwm rau kev tsim dej, ib qho chaw tsim nyog rau lub neej.Nws kuj muaj xws li polymers xws li cellulose (hauv cov nroj tsuag) thiab yas.
Ntawm qhov tod tes, graphite yog ib qho allotrope ntawm carbon;Qhov no txhais tau tias nws yog ib yam khoom uas ua los ntawm cov pa roj carbon ntshiab.Lwm cov allotropes muaj xws li pob zeb diamond, amorphous carbon, thiab charcoal.
Graphite" los ntawm Greek lo lus "graphein," uas yog lus Askiv txhais tau tias "sau."Tsim thaum carbon atoms txuas nrog ib leeg rau hauv nplooj ntawv, graphite yog daim ntawv ruaj khov tshaj plaws ntawm carbon.
Graphite yog mos tab sis muaj zog heev.Nws yog resistant rau tshav kub thiab, nyob rau tib lub sij hawm, ib tug zoo tshav kub conductor.Pom nyob rau hauv cov pob zeb metamorphic, nws zoo nkaus li yog xim hlau tab sis opaque khoom nyob rau hauv cov xim uas txawv ntawm grey tsaus mus rau dub.Graphite yog greasy, ib tug yam ntxwv uas ua rau nws ib tug zoo lubricant.
Graphite kuj tseem siv los ua cov xim thiab molding tus neeg sawv cev hauv kev tsim iav.Nuclear reactors kuj siv graphite ua tus tswj xyuas hluav taws xob.
Nws tsis yog qhov xav tsis thoob vim li cas carbon thiab graphite ntseeg tias yog ib qho thiab tib yam;lawv zoo sib xws, tom qab tag nrho.Graphite yog tsim los ntawm carbon, thiab carbon ua rau hauv graphite.Tab sis ua tib zoo saib lawv yuav ua rau koj pom tias lawv tsis yog ib qho thiab tib yam.
Post lub sij hawm: Dec-04-2020