Maitiro ekugadziridza activated kabhoni kazhinji ane kabhoni inoteverwa ne activation ye carbonaceous zvinhu kubva pamuriwo.Carbonization mushonga wekupisa pa400-800 ° C iyo inoshandura mbichana kuita kabhoni nekudzikisa zviri mukati mechinhu chinoputika uye kuwedzera kabhoni yemukati mezvinhu.Izvi zvinowedzera simba remidziyo uye zvinogadzira yekutanga porous chimiro chinodiwa kana kabhoni ichizoitwa.Kugadzirisa mamiriro ecarbonization anogona kukanganisa chigadzirwa chekupedzisira zvakanyanya.Iyo yakawedzera carbonization tembiricha inowedzera reactivity, asi panguva imwechete inoderedza huwandu hwema pores aripo.Uku kuderera kwevhoriyamu ye pores kunokonzerwa nekuwedzera kwekumisikidzwa kwezvinhu pane yakakwirira tembiricha yecarbonization iyo inopa kuwedzera kwesimba remagetsi.Naizvozvo, zvinova zvakakosha kusarudza iyo chaiyo tembiricha tembiricha zvichibva pane inodiwa chigadzirwa checarbonization.
Aya maokisidhi anopararira kunze kwekabhoni zvichikonzera chidimbu chegasi chinovhura ma pores akange ambovharwa uye anovandudza kabhoni yemukati porous chimiro.Mumakemikari activation, iyo kabhoni inoitwa pakupisa kwakanyanya ine dehydrating agent inobvisa iyo yakawanda yehydrogen uye oksijeni kubva kune kabhoni chimiro.Kemikari activation inowanzobatanidza iyo carbonization uye activation nhanho, asi aya matanho maviri anogona kuramba achiitika zvakasiyana zvichienderana nemaitiro.Nzvimbo dzakakwirira dzepamusoro dzinopfuura 3,000 m2 / g dzakawanikwa pakushandisa KOH semakemikari activating agent.
Activated Carbon kubva Akasiyana Raw Materials.
Pamusoro pekuva adsorbent inoshandiswa kune zvakawanda zvakasiyana zvinangwa, activated kabhoni inogona kugadzirwa kubva muhupfumi hwezvinhu zvakasiyana siyana, zvichiita kuti ive chigadzirwa chakasiyana-siyana chinogona kugadzirwa munzvimbo dzakasiyana siyana zvichienderana nekuti chii chiripo.Zvimwe zvezvinhu izvi zvinosanganisira mateko emiti, matombo emichero, matanda, asphalt, simbi carbides, kabhoni dema, tsvina yakaraswa kubva mutsvina, uye polymer scraps.Mhando dzakasiyana dzemarasha, ayo atovepo mune 5 kabhoni fomu ine yakagadziridzwa pore chimiro, inogona kufambiswazve kugadzirisa kugadzira activated kabhoni.Kunyangwe activated kabhoni inogona kugadzirwa kubva kunenge chero yakabikwa, inonyanya kudhura uye inoziva zvakatipoteredza kugadzira activated kabhoni kubva mumarara.Akabatidzwa makabhoni anogadzirwa kubva kukokonati magomba akaratidzwa kuve ane akakwira mavhoriyamu emicropores, achiaita iwo anonyanya kushandiswa mbishi yezvinhu zvekushandisa panodiwa yakakwirira adsorption.Sawdust nezvimwe zvimedu zvehuni zvinewo zvakasimbiswa zvakagadziridzwa microporous zvimiro izvo zvakanakira adsorption kubva gasi chikamu.Kugadzira activated kabhoni kubva kumuorivhi, plum, apricot, uye matombo epichisi kunobereka zvakanyanya homogenous adsorbents nekuoma kwakakosha, kuramba kubrasion uye yakakwira micropore vhoriyamu.PVC scrap inogona kushandiswa kana HCl ikabviswa kare, uye inoguma mu activated carbon inova yakanaka adsorbent ye methylene blue.Activated carbons akatogadzirwa kubva pazvimedu zvematai.Kuti usiyanise pakati pehupamhi hwezvinogona kuitika zvinotangira, zvinova zvakafanira kuti uongorore mhedzisiro yemuviri maitiro mushure mekuita.Pakusarudza precursor zvinhu zvinotevera zvakakosha: chaiyo nzvimbo yepores, pore vhoriyamu uye pore vhoriyamu kugovera, kuumbwa uye saizi yemagranules, uye chimiro chemakemikari / chimiro cheiyo carbon surface.
Kusarudza yakaringana precursor yekushandisa kwakakosha zvakanyanya nekuti kusiyanisa kwe precursor zvinhu kunobvumira kudzora kabhoni pore chimiro.Different precursors ine akasiyana macropores (> 50 nm,) iyo 6 inosarudza reactivity yavo.Aya macropores haashande kune adsorption, asi kuvapo kwavo kunobvumira mamwe machani ekugadzira ma micropores panguva ye activation.Pamusoro pezvo, iwo macropores anopa dzimwe nzira dzekuti adsorbate mamorekuru kusvika kuma micropores panguva yekushambadza.
Nguva yekutumira: Kubvumbi-01-2022