Siyakwamukela kuwebhusayithi yethu ukuze uthole ulwazi lomkhiqizo nokubonisana.
Iwebhusayithi yethu:https://www.vet-china.com/
Leli phepha lihlaziya imakethe yekhabhoni ecushiwe yamanje, lenza ukuhlaziya okujulile kwezinto ezingavuthiwe zekhabhoni ecushiwe, lethula izindlela zokuchazwa kwesakhiwo se-pore, izindlela zokukhiqiza, izici ezinomthelela kanye nokuqhubeka kokusetshenziswa kwekhabhoni ecushiwe, futhi libuyekeza imiphumela yocwaningo yekhabhoni ecushiwe. ubuchwepheshe bokuthuthukisa isakhiwo se-pore, okuhloswe ngaso ukukhuthaza ikhabhoni ecushiwe ukuze idlale indima enkulu ekusetshenzisweni kobuchwepheshe obuluhlaza kanye nekhabhoni ephansi.
Ukulungiswa kwekhabhoni ecushiwe
Ngokuvamile, ukulungiswa kwekhabhoni ecushiwe kuhlukaniswe izigaba ezimbili: i-carbonization kanye nokwenza kusebenze
Inqubo ye-Carbonization
I-Carbonization isho inqubo yokushisisa amalahle ekushiseni okuphezulu ngaphansi kokuvikelwa kwegesi engasebenzi ukuze abole izinto zayo eziguquguqukayo futhi kutholwe imikhiqizo ephakathi nendawo enekhabhoni. I-carbonization ingafinyelela umgomo olindelekile ngokulungisa imingcele yenqubo. Ucwaningo lubonise ukuthi izinga lokushisa lokuvula liyipharamitha yenqubo eyinhloko ethinta izakhiwo ze-carbonization. Jie Qiang et al. wafunda umphumela wesilinganiso sokushisa kwe-carbonization ekusebenzeni kwekhabhoni ecushiwe esithandweni se-muffle futhi wathola ukuthi izinga eliphansi lisiza ukuthuthukisa isivuno sezinto ezenziwe nge-carbonized futhi zikhiqize izinto ezisezingeni eliphezulu.
Inqubo yokwenza kusebenze
I-Carbonization ingenza izinto zokusetshenziswa zenze isakhiwo se-microcrystalline esifana ne-graphite futhi sikhiqize isakhiwo esiyinhloko se-pore. Kodwa-ke, lezi zimbotshana ziyaphazamiseka noma zivinjwe futhi zivalwe ezinye izinto, okuholela endaweni ethile encane futhi edinga ukwenziwa kusebenze okwengeziwe. Ukwenza kusebenze inqubo yokuqhubeka nokucebisa isakhiwo se-pore somkhiqizo we-carbonized, owenziwa ikakhulukazi ngokusabela kwamakhemikhali phakathi kwe-activator kanye nempahla eluhlaza: ingakhuthaza ukwakheka kwesakhiwo se-porous microcrystalline.
Ukwenza kusebenze ikakhulukazi kuhamba ngezigaba ezintathu ohlelweni lokucebisa ama-pores wento:
(1) Ukuvula izimbotshana zokuqala ezivaliwe (ngezimbotshana);
(2) Ukwandisa izimbotshana zakuqala (ukunwetshwa kwezimbotshana);
(3) Ukwakha izimbotshana ezintsha (ukwakhiwa kwezimbotshana);
Le miphumela emithathu ayenziwa yodwa, kodwa yenzeka kanyekanye nange-synergistically. Ngokuvamile, ngokusebenzisa ama-pores kanye nokudala ama-pore kuyasiza ekwandiseni inani lama-pores, ikakhulukazi ama-micropores, okuzuzisa ukulungiswa kwezinto ezinama-porous ezine-porosity ephezulu kanye nendawo enkulu yendawo ethile, kuyilapho ukunwetshwa kwembobo ngokweqile kuzobangela ukuthi izimbobo zihlangane futhi zixhumane. , ukuguqula ama-micropores abe izimbotshana ezinkulu. Ngakho-ke, ukuze uthole izinto zekhabhoni ezicushiwe ezinama-pores athuthukile nendawo enkulu ethile, kuyadingeka ukugwema ukwenza kusebenze ngokweqile. Izindlela ezivame ukusetshenziswa ze-activated carbon activation zihlanganisa indlela yamakhemikhali, indlela engokwenyama kanye nendlela ye-physicochemical.
Indlela yokwenza kusebenze amakhemikhali
Indlela yokuvula ikhemikhali ibhekisela endleleni yokwengeza izinto ezisebenza ngamakhemikhali ezintweni ezingavuthiwe, bese ziwashisisa ngokwethula amagesi avikelayo anjenge-N2 ne-Ar esithandweni sokushisisa ukuze enze i-carbonize futhi ayisebenzise ngesikhathi esifanayo. Ama-activator asetshenziswa kakhulu ngokuvamile i-NaOH, KOH ne-H3P04. Indlela yokuvula amakhemikhali inezinzuzo zokushisa okuphansi kokwenza kusebenze kanye nesivuno esikhulu, kodwa futhi inezinkinga ezinjengokugqwala okukhulu, ubunzima bokukhipha ama-reagents angaphezulu kanye nokungcoliswa okukhulu kwemvelo.
Indlela yokwenza kusebenze ngokomzimba
Indlela yokwenza kusebenze ngokomzimba ibhekisela ekufakeni i-carbonizing izinto ezingavuthiwe ngqo esithandweni, bese isabela ngamagesi afana ne-CO2 ne-H20 eyethulwe ekushiseni okuphezulu ukuze kuzuzwe inhloso yokwandisa izimbotshana nokwandisa izimbotshana, kodwa indlela yokwenza kusebenze ngokomzimba ingakwazi ukulawula kahle imbobo. isakhiwo. Phakathi kwazo, i-CO2 isetshenziswa kakhulu ekulungiseni ikhabhoni ecushiwe ngoba ihlanzekile, itholakala kalula futhi inezindleko eziphansi. Sebenzisa igobolondo likakhukhunathi eline-carbonized njengento eluhlaza futhi ulivule nge-CO2 ukuze ulungiselele ikhabhoni ecushiwe enama-micropores athuthukile, ngendawo ethile kanye nenani lembotshana eliphelele elingu-1653m2·g-1 kanye no-0.1045cm3·g-1, ngokulandelana. Ukusebenza kufinyelele izinga lokusebenzisa ikhabhoni ecushiwe kuma-capacitor anengqimba ekabili.
Yenza kusebenze itshe le-loquat nge-CO2 ukuze ulungiselele ikhabhoni ecushwe kakhulu, ngemva kokusebenza ku-1100 ℃ imizuzu engu-30, indawo ethize kanye nenani lembotshana eliphelele lifinyelele ku-3500m2·g-1 no-1.84cm3·g-1, ngokulandelana. Sebenzisa i-CO2 ukuze wenze kusebenze okwesibili kugobolondo likakhukhunathi lokuhweba elicushiwe. Ngemuva kokusebenza, ama-micropores omkhiqizo oqediwe ancishisiwe, umthamo we-micropore wanda kusuka ku-0.21 cm3 · g-1 kuya ku-0.27 cm3 · g-1, indawo ethile yanda kusuka ku-627.22 m2 · g-1 kuya ku-822.71 m2 · g-1 , futhi amandla okukhangisa e-phenol anyuke ngo-23.77%.
Ezinye izazi zifunde izici eziyinhloko zokulawula inqubo yokwenza kusebenze i-CO2. U-Mohammad et al. [21] ithole ukuthi izinga lokushisa liyisici esinomthelela omkhulu lapho i-CO2 isetshenziswa ukwenza kusebenze amasaha erabha. Indawo ethize, ivolumu yembotshana kanye ne-microporosity yomkhiqizo oqediwe kuqala yanda bese yehla ngokunyuka kwezinga lokushisa. Cheng Song et al. [22] usebenzise indlela yokusebenza yendawo yokuphendula ukuze ahlaziye inqubo yokwenza kusebenze i-CO2 yamagobolondo amantongomane e-macadamia. Imiphumela yabonisa ukuthi izinga lokushisa lokuvula kanye nesikhathi sokwenza kusebenze kunethonya elikhulu ekuthuthukisweni kwama-micropores e-carbon activated.
Isikhathi sokuthumela: Aug-27-2024