Chinyorwa chino chakaongororwa zvichienderana nemaitiro eScience X ekunyora uye mitemo. Vanyori vakasimbisa zvinhu zvinotevera uku vachiona kuti zvirimo ndezvechokwadi:
Kabhoni dhayokisaidhi (CO2) chinhu chakakosha pakurarama panyika uye gasi rinopisa pasi rose rinobatsira pakupisa kwepasi rose. Nhasi uno, masayendisiti ari kudzidza nezvekabhoni dhayokisaidhi sechinhu chinovimbisa pakugadzirwa kwemafuta anogadzirwazve, ane kabhoni shoma uye zvigadzirwa zvemakemikari zvinokosha.
Dambudziko revaongorori nderekuona nzira dzinoshanda uye dzisingadhuri dzekushandura kabhoni dhayokisaidhi kuita zvinhu zvemhando yepamusoro zvakaita sekabhoni monoxide, methanol kana formic acid.
Chikwata chekutsvagisa chinotungamirwa naKK Neuerlin weNational Renewable Energy Laboratory (NREL) pamwe nevamwe vanoshanda pamwe chete kuArgonne National Laboratory neOak Ridge National Laboratory chakawana mhinduro yakanaka padambudziko iri. Chikwata ichi chakagadzira nzira yekushandura kugadzira formic acid kubva kucarbon dioxide chichishandisa magetsi anogona kushandiswazve ane simba rakawanda uye anogara kwenguva refu.
Chidzidzo ichi, chainzi “Scalable membrane electrode assembly architecture for efficient electrochemical conversion of carbon dioxide to formic acid,” chakaburitswa mujenari reNature Communications.
Asidhi yeFormic imhando yemakemikari inogona kushandiswa zvakasiyana-siyana, kunyanya sezvinhu zvisina kugadzirwa mumaindasitiri emakemikari kana ezvipenyu. Asidhi yeFormic yakaonekwawo sechinhu chekugadzira mafuta emundege akachena.
Kushandiswa kwemagetsi eCO2 kunoguma nekuderedzwa kweCO2 kuita zvinhu zvemakemikari zvakaita seformic acid kana mamorekuru akadai seethylene kana paine simba remagetsi rinoshandiswa kumasero eelectrolytic.
Kuungana kwe membrane-electrode (MEA) mu electrolyzer kunowanzova ne membrane inotungamira ion (cation kana anion exchange membrane) yakakamurwa pakati pema electrodes maviri ane electrocatalyst uye polymer inotungamira ion.
Vachishandisa hunyanzvi hwechikwata muhunyanzvi hwema fuel cell uye hydrogen electrolysis, vakadzidza ma MEA configuration akati wandei mu electrolytic cells kuti vaenzanise electrochemical reduction ye CO2 kune formic acid.
Zvichibva pakuongorora kukundikana kwemagadzirirwo akasiyana-siyana, timu iyi yakaedza kushandisa zvisingakwanisike pamidziyo iripo, kunyanya kushaikwa kwekurambwa kwemaion muma current anion exchange membranes, uye kurerutsa dhizaini yesystem yese.
Kugadzira kwakaitwa naKS Neierlin naLeiming Hu veNREL kwaive electrolyzer yeMEA yakagadziridzwa ichishandisa membrane itsva yekuchinjana kwe cation yakaboorwa. Iyi membrane yakaboorwa inopa kugadzirwa kwe formic acid kwakarongeka, kwakasarudzwa zvakanyanya uye kunoita kuti dhizaini ive nyore nekushandisa zvinhu zvisiri zvepakutanga.
"Mhedzisiro yechidzidzo ichi inoratidza shanduko huru mukugadzirwa kwema organic acids emagetsi akadai se formic acid," akadaro mumwe munyori Neierlin. "Maumbirwo e membrane yakaboorwa anoderedza kuoma kwemagadzirirwo ekare uye anogonawo kushandiswa kuvandudza kushanda nesimba uye kugara kwenguva refu kwezvimwe zvishandiso zve electrochemical carbon dioxide."
Sezvinoita chero kufambira mberi kwesainzi, zvakakosha kunzwisisa zvinhu zvinodhura uye kugona kwehupfumi. Vachishanda mumadhipatimendi akasiyana, vaongorori veNREL Zhe Huang naTao Ling vakapa ongororo yetekinoroji nehupfumi vachiratidza nzira dzekuzadzisa kuenzana kwemitengo nemaitiro emazuva ano ekugadzira maindasitiri eformic acid apo mutengo wemagetsi anowanikwazve uri pamasendi 2.3 pa kilowatt-awa.
"Chikwata ichi chakawana mhedzisiro iyi chichishandisa macatalyst anowanikwa kutengeswa uye zvinhu zvepolymer membrane, ukuwo vachigadzira dhizaini yeMEA inoshandisa mukana wekuwanda kwema fuel cell emazuva ano uye hydrogen electrolysis plants," akadaro Neierlin.
"Mhedzisiro yekutsvagisa uku inogona kubatsira kushandura kabhoni dhayokisaidhi kuita mafuta nemakemikari uchishandisa magetsi anogona kushandiswazve nehydrogen, zvichikurumidzisa shanduko kuenda pakukura nekutengeserana."
Tekinoroji dzekushandura makemikari emagetsi chinhu chikuru chechirongwa cheNREL cheElectrons to Molecules, icho chinotarisa pane hydrogen yechizvarwa chinotevera inogona kushandiswazve, mafuta asina simba, makemikari uye zvinhu zvinoshandiswa pakuita zvinhu zvinofambiswa nemagetsi.
"Chirongwa chedu chiri kutsvaga nzira dzekushandisa magetsi anogona kushandiswazve kushandura mamorekuru akadai secarbon dioxide nemvura kuita zvinhu zvinogona kushanda semasimba," akadaro Randy Cortright, director weNREL's electron transfer uye/kana precursors strategy yekugadzira mafuta.
"Tsvakurudzo iyi yekushandura makemikari emagetsi inopa budiriro inogona kushandiswa mumhando dzakasiyana dzekushandura makemikari emagetsi, uye tinotarisira kuwana mimwe mhedzisiro inovimbisa kubva kuboka iri."
Rumwe ruzivo: Leiming Hu et al., Scalable membrane electrode assembly architecture yekushandura CO2 kuita formic acid nemazvo, Nature Communications (2023). DOI: 10.1038/s41467-023-43409-6
Kana mukasangana nezvikanganiso zvisirizvo, kusarongeka, kana kuti muchida kutumira chikumbiro chekugadzirisa zviri papeji rino, ndapota shandisai fomu iri. Kana muine mibvunzo yakawanda, ndapota shandisai fomu redu rekutaurirana. Kuti muwane mhinduro dzakawanda, shandisai chikamu chemashoko everuzhinji chiri pazasi (teverai mirairo).
Mhinduro dzenyu dzakakosha zvikuru kwatiri. Zvisinei, nekuda kwekuwanda kwemashoko, hatigone kuvimbisa mhinduro yakanangana nesu.
Kero yako yeemail inongoshandiswa chete kuudza vagamuchiri vakatumira email. Kero yako kana kero yemugamuchiri haizoshandiswi kune chimwe chinangwa. Ruzivo rwaunonyora ruchaonekwa muemail yako uye haruzochengetwi neTech Xplore chero nenzira ipi zvayo.
Iyi webhusaiti inoshandisa makuki kuti ikubatsire kufamba-famba, kuongorora mashandisiro ako emasevhisi edu, kuunganidza ruzivo rwekushambadza, uye kupa zvemukati kubva kune vamwe vanhu. Nekushandisa webhusaiti yedu, unobvuma kuti waverenga uye wanzwisisa Mutemo wedu weKuchengetedza Ruzivo uye Mitemo Yekushandisa.