Kugamuchirwa kune webhusaiti yedu yeruzivo rwechigadzirwa uye kubvunzana.
Webhusaiti yedu:https://www.vet-china.com/
Iri bepa rinoongorora yazvino activated kabhoni musika, inoitisa yakadzama ongororo yezvakagadzirwa kabhoni, inosuma iyo pore chimiro chemaitiro, nzira dzekugadzira, zvinofurira zvinhu uye kufambira mberi kwekushandiswa kwekabhoni yakagadziriswa, uye inoongorora mhedzisiro yekutsvagisa yeakagadzirwa kabhoni pore chimiro chekugadzirisa tekinoroji, iine chinangwa chekusimudzira activated kabhoni kuti iite yakasvibira uye yakaderera basa mune yakasvibira-technologies.
Kugadzirira kwe activated carbon
Kazhinji kutaura, kugadzirira kweiyo activated kabhoni yakakamurwa kuita nhanho mbiri: carbonization uye activation
Carbonization process
Carbonization inoreva maitiro ekupisa marasha akasvibira pakupisa kwakanyanya pasi pekuchengetedzwa kwegasi inert kuti iparadze chinhu chayo chinoputika uye kuwana zvigadzirwa zvepakati kabhoni. Iyo carbonization inogona kuzadzisa chinangwa chinotarisirwa nekugadzirisa maitiro ekugadzirisa. Zvidzidzo zvakaratidza kuti activation tembiricha ndiyo yakakosha maitiro parameter inobata iyo carbonization zvivakwa. Jie Qiang et al. akadzidza mhedzisiro yecarbonization yekudziya mwero pakuita kweiyo activated kabhoni muchoto chemuffle uye akaona kuti yakaderera chiyero inobatsira kuvandudza goho re carbonized zvinhu uye kugadzira zvemhando yepamusoro zvinhu.
Activation maitiro
Carbonization inogona kuita kuti zvigadzirwa zviumbe microcrystalline chimiro chakafanana negraphite uye kugadzira yekutanga pore chimiro. Nekudaro, aya ma pores akavhiringika kana kuvharwa uye kuvharwa nezvimwe zvinhu, zvichikonzera diki chaiyo nzvimbo uye inoda imwe activation. Activation ndiyo nzira yekuwedzera kupfumisa iyo pore chimiro chechigadzirwa chekabhoni, iyo inonyanya kuitwa kuburikidza nemakemikari reaction pakati peiyo activator uye mbishi zvinhu: inogona kukurudzira kuumbwa kweporous microcrystalline chimiro.
Activation inonyanya kuenda nematanho matatu mukuita kupfumisa ma pores ezvinyorwa:
(1) Kuvhura iyo yekutanga yakavharwa pores (kuburikidza nemapores);
(2) Kuwedzera pores yepakutanga (kuwedzerwa kwepore);
(3) Kugadzira pores matsva (kugadzira pore);
Aya matatu mhedzisiro haaitwe ega, asi anoitika panguva imwe chete uye synergistically. Kazhinji kutaura, kuburikidza nemapores uye kugadzirwa kwepore kunobatsira kuwedzera huwandu hwepores, kunyanya micropores, iyo inobatsira pakugadzirwa kwezvinhu zvine porous ine yakakwira porosity uye yakakura yakananga nzvimbo, nepo kuwedzera kwepore kuwedzera kuchaita kuti pores abatanidzwe uye abatanidze, kushandura micropores kuita mahombe pores. Naizvozvo, kuti utore activated kabhoni zvinhu zvine kugadzirwa pores uye yakakura chaiyo nzvimbo nzvimbo, zvinodikanwa kudzivirira zvakanyanya activation. Inowanzo shandiswa activated carbon activation nzira dzinosanganisira makemikari nzira, nzira yemuviri uye physicochemical nzira.
Chemical activation nzira
Chemical activation nzira inoreva nzira yekuwedzera makemikari reagents kune yakabikwa, uye wobva yadzipisa nekuunza magasi ekudzivirira akadai seN2 neAri muchoto chekudziya kuti carbonize uye ivaite panguva imwe chete. Anowanzo shandiswa activator anowanzo NaOH, KOH uye H3P04. Iyo kemikari activation nzira ine zvakanakira yekudzikira activation tembiricha uye goho rakawanda, asi ine zvakare matambudziko akadai sekuora kukuru, kuomerwa nekubvisa pamusoro reagents uye yakakomba kusvibiswa kwezvakatipoteredza.
Physical activation nzira
Physical activation nzira inoreva carbonizing iyo mbishi zvinhu zvakanangana muchoto, uyezve kuita nemagasi akadai CO2 neH20 akaunzwa pakupisa kwepamusoro kuti azadzise chinangwa chekuwedzera pores uye kuwedzera pores, asi iyo yemuviri activation nzira ine kutadza controllability ye pore chimiro. Pakati pavo, CO2 inoshandiswa zvakanyanya mukugadzira kabhoni yakagadziriswa nekuti yakachena, iri nyore kuwana uye yakaderera mutengo. Shandisa carbonized kokonati goko sezvo mbishi zvinhu uye activated nayo CO2 kugadzirira activated kabhoni ane yakagadziridzwa micropores, ine chaiwo nzvimbo uye yakazara pore vhoriyamu 1653m2 · g-1 uye 0.1045cm3 · g-1, zvichiteerana. Kuita kwacho kwakasvika pakushandisa chiyero cheakabatidzwa kabhoni kune maviri-layer capacitors.
Activate loquat dombo pamwe CO2 kugadzirira super activated kabhoni, pashure activation pa 1100 ℃ kwemaminitsi 30, chaiyo pamusoro nzvimbo uye yakazara pore vhoriyamu yakasvika kusvika 3500m2 · g-1 uye 1.84cm3 · g-1, zvichiteerana. Shandisa CO2 kuita yechipiri activation pane yekutengesa coconut shell activated carbon. Mushure mekushanda, ma micropores echigadzirwa chakapedzwa akaderedzwa, micropore volume yakawedzera kubva 0.21 cm3 · g-1 kusvika 0.27 cm3 · g-1, nzvimbo chaiyo yakawedzera kubva 627.22 m2 · g-1 kusvika 822.71 m2 · g-1, uye adsorption simba re 23.7 yakawedzera ne 23.7%.
Dzimwe nyanzvi dzakadzidza iyo huru yekudzora zvinhu zve CO2 activation process. Mohammad et al. [21] akawana kuti tembiricha ndiyo inonyanya kufurira chinhu kana CO2 ichishandiswa kumisa rubber sawdust. Iyo chaiyo nzvimbo, pore vhoriyamu uye microporosity yechigadzirwa chakapedzwa chakatanga kuwedzera uye ndokuderera nekuwedzera tembiricha. Cheng Song et al. [22] akashandisa nzira yekupindura pamusoro pekuongorora iyo CO2 activation process ye macadamia nut shells. Mhedzisiro yacho yakaratidza kuti activation tembiricha uye activation nguva ine pesvedzero huru pakuvandudzwa kweiyo activated kabhoni micropores.
Nguva yekutumira: Aug-27-2024