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Warqadani waxay falanqaysaa suuqa kaarboonka firfircoon ee hadda jira, waxay qabataa falanqayn qotodheer oo ku saabsan alaabta ceeriin ee kaarboonka firfircoon, waxay soo bandhigaysaa hababka sifaynta qaab dhismeedka daloolka, hababka wax soo saarka, arrimaha saameeya iyo horumarka codsiga ee kaarboonka firfircoon, iyo dib u eegista natiijooyinka cilmi-baarista ee kaarboonka firfircoon. teknoolajiyada hagaajinta qaab dhismeedka daloolka, ujeedaduna tahay in kor loo qaado kaarboonka firfircoon si uu door weyn uga ciyaaro adeegsiga tignoolajiyada cagaaran iyo kuwa hooseeya.
Diyaarinta kaarboonka firfircoon
Guud ahaan, diyaarinta kaarboonka firfircooni waxay u qaybsantaa laba marxaladood: Carbonization iyo activation
Habka Carbonization
Kaarboonaysiinta waxaa loola jeedaa habka kululaynta dhuxusha ceeriin heerkul sare iyadoo la ilaalinayo gaaska aan shaqayn si uu u dumiyo arrintiisa kacsan oo loo helo badeecooyin dhexdhexaad ah oo carbonized ah. Carbonization-ku wuxuu gaari karaa yoolka la filayo iyadoo la hagaajinayo cabbirrada habka. Daraasaduhu waxay muujiyeen in heerkulka firfircoonidu uu yahay halbeegga geeddi-socodka muhiimka ah ee saameeya sifooyinka kaarboonaynta. Jie Qiang iyo al. dersay saamaynta heerka kulaylka carbonization on waxqabadka kaarboon firfircoon ee foornada muffle ah oo la ogaaday in heerka hoose ka caawisaa si loo hagaajiyo dhalidda ee alaabta carbonized iyo soo saarida qalab tayo sare leh.
Habka hawlgelinta
Carbonization waxay ka dhigi kartaa alaabta ceeriin inay sameeyaan qaab-dhismeedka microcrystalline oo la mid ah garaafyada waxayna abuuraan qaab dhismeedka daloolada aasaasiga ah. Si kastaba ha ahaatee, dalooladaasi waa kuwo khalkhalsan ama xannibay oo ay xidheen walxo kale, taasoo keentay meel yar oo gaar ah oo u baahan firfircooni dheeraad ah. Dhaqdhaqaaqa waa habka lagu kobcinayo qaab dhismeedka daldaloolada ee alaabta carbonized, kaas oo inta badan lagu fuliyo falcelinta kiimikada ee u dhaxaysa firfircoonida iyo alaabta ceeriin: waxay kor u qaadi kartaa samaynta qaab dhismeedka microcrystalline.
Firfircoonigu inta badan waxa ay martaa saddex marxaladood oo geedi socodka kobcinta daloolada walxaha:
(1) Furitaanka daldaloollada asalka ah ee xiran (iyada oo loo maro daloollada);
(2) Kordhinta daloollada asalka ah (ballaarinta daloolka);
(3) Samaynta daloolo cusub (dalool abuur);
Saddexdan saamayn keligeed lama fuliyo, laakiin waxay u dhacaan isku mar iyo si wada jir ah. Guud ahaan, iyada oo loo marayo daloolada iyo abuurista daldaloolada ayaa ku habboon kordhinta tirada daloolada, gaar ahaan micropores, taas oo faa'iido u leh diyaarinta walxaha daloolada leh ee leh porosity sare iyo aag ballaaran oo gaar ah, halka balaadhinta daloolada xad-dhaafka ah ay sababi doonto in daloollada ay isku biiraan oo ay isku xiraan. , oo u beddela micropores daldaloollo waaweyn. Sidaa darteed, si loo helo qalabka kaarboonka firfircoon ee leh daloolo horumarsan iyo aag ballaaran oo gaar ah, waxaa lagama maarmaan ah in laga fogaado firfircoonida xad-dhaafka ah. Hababka kaarboonka firfircoon ee inta badan la isticmaalo waxaa ka mid ah habka kiimikaad, habka jirka iyo habka physicochemical.
Habka kicinta kiimikada
Habka kicinta kiimikada waxaa loola jeedaa habka loogu daro reagents kiimikaad alaabta ceeriin ah, ka dibna kuleyliya iyaga oo soo bandhigaya gaasaska difaaca sida N2 iyo Ar foornada kuleylka si ay ugaarbooneysiiyaan oo ay u dhaqaajiyaan isku mar. Dhaqdhaqaaqayaasha sida caadiga ah loo isticmaalo waa NaOH, KOH iyo H3P04. Habka kicinta kiimikada ayaa leh faa'iidooyinka heerkulka firfircoonida hooseeya iyo dhalidda sare, laakiin sidoo kale waxay leedahay dhibaatooyin ay ka mid yihiin daxalka weyn, oo ay ku adagtahay in laga saaro reagents dusha sare iyo wasakhowga deegaanka ee halista ah.
Habka firfircoonida jirka
Habka firfircoonida jirka waxaa loola jeedaa carbonizing alaabta ceeriin si toos ah foornada, ka dibna ka falcelin gaas sida CO2 iyo H20 soo bandhigay heerkulka sare si loo gaaro ujeedada kordhinta daldaloolada iyo ballaarinta dalool, laakiin habka firfircoonida jireed ayaa leh xakamaynta liidata ee daloolka. qaab dhismeedka. Waxaa ka mid ah, CO2 waxaa si weyn loogu isticmaalaa diyaarinta kaarboonka firfircoon, sababtoo ah waa nadiif, fududahay in la helo iyo qiimo jaban. Isticmaal qolof qumbaha carbonized sida alaabta ceeriin oo ku dhaqaajisay CO2 si aad u diyaariso kaarboon firfircoon oo leh micropores horumarsan, oo leh meel gaar ah oo dusha sare ah iyo wadarta mugga daloolka 1653m2 · g-1 iyo 0.1045cm3·g-1, siday u kala horreeyaan. Waxqabadku wuxuu gaadhay heerka isticmaalka kaarboonka firfircoon ee capacitors-laba-lakabka ah.
Dhaqdhaqaaq dhagax loquat leh CO2 si aad u diyaarisid kaarboonka firfircoon ee super, ka dib markii la dhaqaajiyo 1100 ℃ 30 daqiiqo, aagga dusha gaarka ah iyo wadarta mugga daloolka ayaa gaadhay ilaa 3500m2 · g-1 iyo 1.84cm3 · g-1, siday u kala horreeyaan. Isticmaal CO2 si aad u sameyso firfircooni labaad oo ku saabsan kaarboonka firfircoon ee qolofka qumbaha. Dhaqdhaqaaqa ka dib, micropores ee alaabta la dhammeeyey ayaa la yareeyey, mugga micropore wuxuu ka kordhay 0.21 cm3 · g-1 ilaa 0.27 cm3 · g-1, dusha sare ee gaarka ah ayaa kordhay 627.22 m2 · g-1 ilaa 822.71 m2 · g-1 , iyo awoodda adsorption ee phenol ayaa lagu kordhiyay 23.77%.
Culimo kale ayaa daraasad ku sameeyay qodobbada xakamaynta ugu weyn ee habka firfircoonida CO2. Maxamed iyo al. [21] waxay ogaatay in heerkulku yahay qodobka ugu muhiimsan ee saameeya marka CO2 loo isticmaalo in lagu dhaqaajiyo balka caagga ah. Aagga dusha sare ee gaarka ah, mugga daloolka iyo microporosity ee alaabta la dhammeeyey ayaa markii hore kordhay ka dibna hoos u dhigtay heerkulka sii kordhaya. Cheng Song iyo al. [22] waxay isticmaaleen habka dusha sare ee jawaabta si ay u falanqeeyaan habka kicinta CO2 ee qolofka lowska macadamiya. Natiijooyinka waxay muujiyeen in heerkulka firfircoonida iyo wakhtiga firfircoonida ay saameyn weyn ku leeyihiin horumarinta micropores kaarboon firfircoon.
Waqtiga boostada: Agoosto-27-2024