Uzuza iyi fomu iri hepfo hanyuma tuzakwandikira imeri ya PDF ya “Iterambere rishya ry'ikoranabuhanga ryo guhindura dioxyde de carbone mu mavuta y’amazi”
Dioxyde de Carbone (CO2) nigicuruzwa cyo gutwika ibicanwa bya gaze hamwe na gaze ya parike ikunze kugaragara, ishobora guhindurwa ibicanwa byingirakamaro muburyo burambye. Bumwe mu buryo butanga ikizere cyo guhindura imyuka ya CO2 mu biryo bya peteroli ni inzira yitwa kugabanya amashanyarazi. Ariko kugirango ubucuruzi bushoboke, inzira igomba kunozwa kugirango uhitemo cyangwa utange ibicuruzwa byinshi bikungahaye kuri karubone. Noneho, nkuko byavuzwe mu kinyamakuru Nature Energy, Laboratoire y’igihugu ya Lawrence Berkeley (Berkeley Lab) yashyizeho uburyo bushya bwo kunoza ubuso bwa catalizike y'umuringa ikoreshwa mu bikorwa byo gufasha, bityo byongera guhitamo inzira.
Alexis, umuhanga mu bumenyi bukuru mu ishami ry’ubumenyi bw’imiti muri Berkeley Lab akaba n'umwarimu w’ubuhanga bw’imashini muri kaminuza yagize ati: "Nubwo tuzi ko umuringa ari umusemburo mwiza kuri iki gisubizo, ntabwo utanga amahitamo menshi ku bicuruzwa byifuzwa." ya Californiya, Berkeley. Umurozi ati. Ati: “Itsinda ryacu ryasanze ushobora gukoresha ibidukikije bya catalizator kugira ngo ukore amayeri atandukanye kugira ngo utange ubwo buryo bwo guhitamo.”
Mu bushakashatsi bwabanje, abashakashatsi bashizeho uburyo busobanutse bwo gutanga ibidukikije byiza by’amashanyarazi n’imiti yo gukora ibicuruzwa bikungahaye kuri karubone bifite agaciro k’ubucuruzi. Ariko ibi bintu bitandukanye nuburyo busanzwe buboneka muma selile isanzwe ikoresha ibikoresho bishingiye kumazi.
Kugirango hamenyekane igishushanyo gishobora gukoreshwa mu bidukikije by’amazi y’amavuta, mu rwego rw’umushinga wo guhanga ingufu za Minisiteri y’ingufu muri Minisiteri y’ingufu ya Liquid Sunshine Alliance, Bell hamwe nitsinda rye bahinduye urwego ruto rwa ionomer, rutuma bamwe bishyurwa. molekile (ion) kunyuramo. Kuramo izindi ion. Bitewe nimiterere yimiti yatoranijwe cyane, irakwiriye cyane cyane kugira ingaruka zikomeye kubidukikije.
Chanyeon Kim, umushakashatsi w’iposita mu itsinda rya Bell akaba n'umwanditsi wa mbere w’uru rupapuro, yatanze igitekerezo cyo gutwikira hejuru ya catalizator y'umuringa hamwe na ionomers ebyiri zisanzwe, Nafion na Sustainion. Iri tsinda ryavuze ko kubikora bigomba guhindura ibidukikije hafi ya catalizator - harimo pH n’amazi y’amazi na dioxyde de carbone - mu buryo bumwe na bumwe bwo kuyobora reaction yo kubyara ibicuruzwa bikungahaye kuri karubone bishobora guhinduka mu buryo bworoshye imiti y’imiti. Ibicuruzwa n'ibicanwa.
Abashakashatsi bakoresheje urwego ruto rwa buri ionomer hamwe na kabili ya ionomeri ebyiri kuri firime y'umuringa ushyigikiwe nibikoresho bya polymer kugirango bakore firime, bashoboraga kuyinjizamo hafi yumutwe umwe wintangangabo zifite amashanyarazi. Iyo bateraga karuboni ya dioxyde muri bateri no gukoresha voltage, bapimye umuyaga wose unyura muri bateri. Hanyuma bapimye gaze n'amazi yakusanyirijwe mu kigega cyegeranye mugihe cya reaction. Ku manza ebyiri, basanze ibicuruzwa bikungahaye kuri karubone bingana na 80% by'ingufu zikoreshwa na reaction - hejuru ya 60% mu rubanza rudafunze.
Bell yagize ati: "Iyi sandwich itanga ibyiza byisi byombi: guhitamo ibicuruzwa byinshi no gukora cyane". Ubuso bubiri-butari bwiza kubicuruzwa bikungahaye kuri karubone gusa, ahubwo binatanga ingufu zikomeye icyarimwe, byerekana kwiyongera mubikorwa.
Abashakashatsi banzuye ko igisubizo cyanonosowe ari igisubizo cyinshi cya CO2 cyegeranijwe mu mwenda hejuru y'umuringa. Byongeye kandi, molekile zishizwemo nabi zegeranya mukarere kari hagati ya ionomers zombi zizatanga aside irike yaho. Uku guhuriza hamwe guhagarika ubucuruzi bwibicuruzwa bikunda kugaragara mugihe hatabayeho firime ya ionomer.
Kugirango turusheho kunoza imikorere yimyitwarire, abashakashatsi bahindukiriye tekinoroji yemejwe mbere idasaba firime ya ionomer nkubundi buryo bwo kongera CO2 na pH: pulsed voltage. Mugukoresha ingufu za pulsed kuri coater-ionomer ebyiri, abashakashatsi bageze ku 250% mubicuruzwa bikungahaye kuri karubone ugereranije n'umuringa udafunze hamwe na voltage ihagaze.
Nubwo abashakashatsi bamwe bibanda kubikorwa byabo mugutezimbere ibinyabuzima bishya, kuvumbura katiseri ntabwo byita kumikorere. Kugenzura ibidukikije hejuru ya catalizator nuburyo bushya kandi butandukanye.
Injeniyeri mukuru, Adam Weber yagize ati: "Ntabwo twazanye umusemburo mushya rwose, ahubwo twakoresheje imyumvire yacu ku myitwarire ya reaction kandi twifashishije ubwo bumenyi kugira ngo butuyobore mu gutekereza ku buryo twahindura ibidukikije by’urubuga rwa catalizike". Abahanga mu bijyanye n’ikoranabuhanga ry’ingufu muri Laboratwari ya Berkeley hamwe n’umwanditsi w’impapuro.
Intambwe ikurikiraho ni iyo kwagura umusaruro wa catalizator. Ubushakashatsi bwibanze bwikipe ya Berkeley bwarimo sisitemu ntoya yicyitegererezo, yari yoroshye cyane kuruta ahantu hanini hubatswe ibyangombwa bisabwa mubucuruzi. “Ntabwo bigoye gushira igifuniko hejuru. Ariko uburyo bw'ubucuruzi bushobora kuba bukubiyemo gutwikira imipira mito y'umuringa, ”Bell. Ongeraho urwego rwa kabiri rwo gutwikira biba ingorabahizi. Ikintu kimwe gishoboka nukuvanga no kubitsa impuzu zombi hamwe mumashanyarazi, kandi twizere ko zizatandukana mugihe umusemburo ushizemo umwuka. Byagenda bite se niba batabikora? Bell yashoje agira ati: “Tugomba kuba abanyabwenge gusa.” Reba kuri Kim C, Bui JC, Luo X n'abandi. Ibikoresho bya catalizike ya microen ibidukikije yo kugabanya amashanyarazi ya CO2 kubicuruzwa byinshi bya karubone ukoresheje ionomer ebyiri zifatanije kumuringa. Ingufu. 2021; 6 (11): 1026-1034. doi: 10.1038 / s41560-021-00920-8
Iyi ngingo yakuwe mubikoresho bikurikira. Icyitonderwa: Ibikoresho bishobora kuba byarahinduwe kuburebure nibirimo. Kubindi bisobanuro, nyamuneka hamagara isoko yatanzwe.
Igihe cyo kohereza: Ugushyingo-22-2021
