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Eli phepha lihlalutya imarike yekhabhoni esebenzayo yangoku, lenza uhlalutyo olunzulu lwemathiriyeli ekrwada yekhabhoni esebenzayo, lazisa iindlela zokuchazwa kwesakhiwo sepore, iindlela zokuvelisa, izinto ezinempembelelo kunye nenkqubela phambili yokusetyenziswa kwekhabhoni esebenzayo, kwaye iphonononga iziphumo zophando zekhabhoni ecushiweyo. I-pore structure optimization technology, ejolise ekukhuthazeni i-carbon activated ukuba idlale indima enkulu ekusetyenzisweni kobuchwepheshe obuluhlaza kunye nekhabhoni ephantsi.
Ukulungiswa kwekhabhoni esebenzayo
Ngokuqhelekileyo, ukulungiswa kwekhabhoni esebenzayo kwahlulwe ngamanqanaba amabini: i-carbonization kunye nokusebenza
Inkqubo yeCarbonization
I-Carbonization ibhekisela kwinkqubo yokufudumeza amalahle akrwada kwiqondo lokushisa eliphezulu phantsi kokukhuselwa kwegesi ye-inert ukubola umcimbi wayo oguquguqukayo kunye nokufumana iimveliso ze-carbonized eziphakathi. I-carbonization inokufezekisa injongo elindelekileyo ngokulungelelanisa iiparitha zenkqubo. Uphononongo lubonise ukuba ukushisa okusebenzayo kuyinkqubo ephambili yeparameter echaphazela iipropati ze-carbonization. Jie Qiang et al. wafunda umphumo wezinga lokufudumeza kwe-carbonization ekusebenzeni kwekhabhoni esebenzayo kwisithando somlilo se-muffle kwaye wafumanisa ukuba izinga eliphantsi linceda ekuphuculeni isivuno sezinto zekhabhoni kunye nokuvelisa izinto eziphezulu.
Inkqubo yokuvula
I-Carbonization inokwenza izinto eziluhlaza zenze isakhiwo se-microcrystalline esifana negraphite kwaye sivelise isakhiwo esisisiseko se-pore. Nangona kunjalo, ezi pores ziphazamisekile okanye zivaliwe kwaye zivaliwe zezinye izinto, ezikhokelela kwindawo encinci yendawo ethile kwaye ifuna ukuphinda kusebenze. Ukuqaliswa yinkqubo yokutyebisa ngakumbi isakhiwo se-pore semveliso ye-carbonized, eyenziwa ngokukodwa ngokusabela kweekhemikhali phakathi kwe-activator kunye ne-raw material: inokukhuthaza ukubunjwa kwesakhiwo se-porous microcrystalline.
Ukusebenza kudlula izigaba ezithathu kwinkqubo yokutyebisa iipores zezinto:
(1) Ukuvula imibhobho yokuqala evaliweyo (ngeembobo);
(2) Ukwandisa imingxuma yokuqala (ukwandiswa kwepore);
(3) Ukwenza imingxunya emitsha (ukwenziwa kweepore);
Ezi ziphumo zintathu azenziwanga zodwa, kodwa zenzeka ngaxeshanye kunye ne-synergistically. Ngokuqhelekileyo, ngokusebenzisa i-pores kunye nokudala i-pore kunceda ukunyusa inani le-pores, ngakumbi i-micropores, enenzuzo ekulungiseleleni izinto ezinobungozi kunye ne-porosity ephezulu kunye nommandla omkhulu ocacileyo, ngelixa ukwanda okugqithisileyo kuya kubangela ukuba i-pores idibanise kwaye idibanise. , ukuguqula i-micropores ibe yimibhobho emikhulu. Ke ngoko, ukuze ufumane izixhobo zekhabhoni ezisebenzayo kunye neepores eziphuhlisiwe kunye nommandla omkhulu ocacileyo, kuyimfuneko ukuphepha ukusebenza ngokugqithisileyo. Iindlela eziqhelekileyo ezisetyenziswa kwikhabhoni esebenzayo ziquka indlela yeekhemikhali, indlela yomzimba kunye nendlela ye-physicochemical.
Indlela yokuvula imichiza
Indlela yokwenza i-Chemical activation ibhekisela kwindlela yokongeza ii-reagents zekhemikhali kwizinto eziluhlaza, kwaye emva koko zifudumale ngokuzisa iigesi ezikhuselayo ezifana ne-N2 kunye ne-Ar kwiziko lokufudumeza i-carbonize kwaye zisebenze ngaxeshanye. Izivuseleli ezisetyenziswa ngokuqhelekileyo ziyi-NaOH, KOH kunye ne-H3P04. Indlela yokuvula imichiza ineengenelo zobushushu obuphantsi bokusebenza kunye nesivuno esikhulu, kodwa ikwaneengxaki ezinjengomhlwa omkhulu, ubunzima ekususeni ii-reagents zomhlaba kunye nongcoliseko olukhulu lokusingqongileyo.
Indlela yokuvula ngokwasemzimbeni
Indlela yokuvula ngokwasemzimbeni ibhekisa kwikhabhoni yezinto ezikrwada ngqo kwiziko, kwaye emva koko iphendule ngeegesi ezinjenge-CO2 kunye ne-H20 eziveliswe kubushushu obuphezulu ukufezekisa injongo yokunyusa iipores kunye nokwandisa iipores, kodwa indlela yokuvula ngokomzimba inokulawulwa kakubi kwepore. isakhiwo. Phakathi kwabo, i-CO2 isetyenziswa ngokubanzi ekulungiseleleni ikhabhoni esebenzayo kuba icocekile, kulula ukuyifumana kunye nexabiso eliphantsi. Sebenzisa iqokobhe coconut carbonized njengento ekrwada kwaye isebenze kunye CO2 ukulungiselela carbon yasebenza kunye micropores eziphuhlisiwe, kunye nommandla othile umphezulu kunye nomthamo pore iyonke 1653m2 · g-1 kunye 0.1045cm3 · g-1, ngokulandelanayo. Ukusebenza kufikelele kumgangatho wokusetyenziswa kwekhabhoni esebenzayo yee-capacitors eziphindwe kabini.
Vula ilitye loquat kunye ne-CO2 ukulungiselela i-carbon esebenzayo, emva kokusebenza kwi-1100 ℃ imizuzu engama-30, indawo ethile yendawo kunye nevolumu yepore iyonke ifikelele kwi-3500m2 · g-1 kunye ne-1.84cm3 · g-1, ngokulandelanayo. Sebenzisa i-CO2 ukwenza usetyenziso lwesibini kwiqokobhe lekhokhonathi yorhwebo esebenzayo. Emva kokusebenza, i-micropores yemveliso egqityiweyo yancitshiswa, ivolumu ye-micropore yanda ukusuka kwi-0.21 cm3 · g-1 ukuya kwi-0.27 cm3 · g-1, indawo ethile yendawo yanda ukusuka kwi-627.22 m2 · g-1 ukuya kwi-822.71 m2 · g-1 , kunye nomthamo we-adsorption we-phenol wanda nge-23.77%.
Abanye abaphengululi baye bafunda izinto eziphambili zolawulo lwenkqubo yokuvula i-CO2. U-Mohammad et al. [21] yafumanisa ukuba ubushushu yeyona nto ichaphazelayo xa i-CO2 isetyenziselwa ukwenza i-rubber sawdust. Indawo ethile yendawo, umthamo we-pore kunye ne-microporosity yemveliso egqityiweyo yanda kuqala kwaye yehla ngokunyuka kweqondo lokushisa. Cheng Ingoma et al. [22] isetyenziselwe indlela yokuphendula umphezulu wokuhlalutya inkqubo ye-CO2 yokuvuselela i-macadamia nut shells. Iziphumo zibonise ukuba ubushushu bokusebenza kunye nexesha lokuvula linempembelelo enkulu ekuphuhliseni i-carbon micropores esebenzayo.
Ixesha lokuposa: Aug-27-2024