Cov thev naus laus zis tshiab qab zib ua rau qhov saj qaub dua. googletag.cmd.push(function(){googletag.display('div-gpt-ad-1449240174198-2′);});
Cov kws ua vaj tse ntawm Rice University tab tom hloov cov pa roj carbon monoxide mus ua acetic acid (ib yam tshuaj siv dav dav uas ua rau vinegar muaj saj zoo) los ntawm lub tshuab ua kom cov pa roj carbon dioxide tsis tu ncua, uas tuaj yeem siv hluav taws xob rov ua dua tshiab los tsim cov khoom huv si.
Cov txheej txheem electrochemical hauv chav kuaj ntawm cov kws ua haujlwm tshuaj lom neeg thiab biomolecular ntawm Rice University's Brown School of Engineering tau daws qhov teeb meem ntawm kev sim ua ntej los txo cov pa roj carbon monoxide (CO) mus rau acetic acid. Cov txheej txheem no xav tau cov kauj ruam ntxiv los ntxuav cov khoom.
Lub reactor uas zoo rau ib puag ncig siv nanometer cubic tooj liab ua lub ntsiab catalyst thiab cov electrolyte khov tshwj xeeb.
Hauv 150 teev ntawm kev ua haujlwm hauv chav kuaj mob tas mus li, cov ntsiab lus acetic acid hauv cov kua dej uas tsim los ntawm cov khoom siv no yog txog li 2%. Qhov huv ntawm cov khoom siv acid yog siab txog li 98%, uas zoo dua li cov khoom siv acid uas tsim los ntawm kev sim ua ntej kom hloov cov pa roj carbon monoxide mus ua roj kua.
Acetic acid siv ua tshuaj tiv thaiv hauv kev siv kho mob nrog rau vinegar thiab lwm yam khoom noj. Siv ua cov kuab tshuaj rau cov kua mem, xim thiab txheej; hauv kev tsim cov vinyl acetate, vinyl acetate yog cov ua ntej ntawm cov kua nplaum dawb.
Cov txheej txheem Rice yog ua raws li lub reactor hauv Wang lub chaw kuaj mob thiab tsim cov formic acid los ntawm carbon dioxide (CO2). Kev tshawb fawb no tau tsim lub hauv paus tseem ceeb rau Wang (tsis ntev los no tau raug xaiv los ua Packard Fellow), uas tau txais $ 2 lab nyiaj pab los ntawm National Science Foundation (NSF) los txuas ntxiv tshawb nrhiav txoj hauv kev los hloov cov pa roj av ua cov roj ua kua.
Wang hais tias: "Peb tab tom hloov kho peb cov khoom los ntawm ib qho tshuaj lom neeg formic acid mus rau ob qho tshuaj lom neeg carbon, uas yog qhov nyuaj dua." "Cov neeg ib txwm tsim cov acetic acid hauv cov kua electrolytes, tab sis lawv tseem muaj kev ua haujlwm tsis zoo thiab cov khoom yog qhov teeb meem ntawm kev sib cais electrolyte."
Senftle ntxiv hais tias: "Tau kawg, acetic acid feem ntau tsis yog synthesized los ntawm CO lossis CO2." "Qhov no yog lub ntsiab lus: peb tab tom nqus cov roj pov tseg uas peb xav txo thiab hloov nws mus ua cov khoom muaj txiaj ntsig."
Ib qho kev sib txuas ua tib zoo tau ua tiav ntawm cov catalyst tooj liab thiab cov electrolyte khov, thiab cov electrolyte khov tau raug xa mus los ntawm lub reactor formic acid. Wang hais tias: "Qee zaum tooj liab yuav tsim cov tshuaj lom neeg raws ob txoj kev sib txawv." "Nws tuaj yeem txo cov pa roj carbon monoxide rau acetic acid thiab cawv. Peb tsim ib lub voos xwmfab nrog lub ntsej muag uas tuaj yeem tswj cov carbon-carbon coupling, thiab cov npoo ntawm cov carbon-carbon Lub coupling ua rau acetic acid es tsis yog lwm yam khoom."
Senftle thiab nws pab neeg tus qauv xam zauv tau pab txhim kho cov duab ntawm lub voos xwmfab. Nws hais tias: "Peb muaj peev xwm qhia cov hom ntug ntawm lub voos xwmfab, uas yog cov nplaim corrugated ntau dua. Lawv pab rhuav qee cov yuam sij CO, yog li cov khoom tuaj yeem raug tswj hwm hauv ib txoj kev lossis lwm txoj kev." Ntau qhov chaw ntug pab rhuav tshem qhov sib txuas zoo rau lub sijhawm zoo.
Senftler hais tias qhov project no yog ib qho piv txwv zoo ntawm kev sib txuas ntawm kev tshawb fawb thiab kev sim. Nws hais tias: "Los ntawm kev sib koom ua ke ntawm cov khoom hauv lub reactor mus rau lub mechanism ntawm atomic-level, qhov no yog ib qho piv txwv zoo ntawm ntau theem ntawm engineering." "Nws haum rau lub ntsiab lus ntawm molecular nanotechnology thiab qhia tias peb tuaj yeem nthuav nws mus rau cov khoom siv tiag tiag li cas."
Wang hais tias kauj ruam tom ntej hauv kev tsim lub kaw lus scalable yog los txhim kho qhov ruaj khov ntawm lub kaw lus thiab txo qis lub zog uas xav tau rau cov txheej txheem.
Cov tub ntxhais kawm tiav qib siab ntawm Rice University Zhu Peng, Liu Chunyan thiab Xia Chuan, J. Evans Attwell-Welch, tus kws tshawb fawb postdoctoral, yog tus neeg tseem ceeb uas saib xyuas daim ntawv no.
Koj tuaj yeem tso siab tau tias peb cov neeg ua haujlwm kho xov xwm yuav saib xyuas txhua qhov kev tawm tswv yim xa tuaj thiab yuav ua cov haujlwm tsim nyog. Koj lub tswv yim tseem ceeb heev rau peb.
Koj qhov chaw nyob email tsuas yog siv los qhia rau tus neeg txais paub tias leej twg xa email. Koj qhov chaw nyob lossis tus neeg txais chaw nyob yuav tsis raug siv rau lwm yam hom phiaj. Cov ntaub ntawv koj sau yuav tshwm sim hauv koj tus email, tab sis Phys.org yuav tsis khaws cia rau hauv txhua daim ntawv.
Xa cov xov xwm tshiab txhua lub lim tiam thiab/lossis txhua hnub rau koj lub inbox. Koj tuaj yeem tshem tawm koj cov ntaub ntawv txhua lub sijhawm, thiab peb yuav tsis qhia koj cov ntaub ntawv rau lwm tus.
Lub vas sab no siv cov cookies los pab nrhiav kev, tshuaj xyuas koj txoj kev siv peb cov kev pabcuam thiab muab cov ntsiab lus los ntawm cov neeg thib peb. Thaum koj siv peb lub vas sab, koj lees paub tias koj tau nyeem thiab nkag siab txog peb txoj cai tswjfwm ntiag tug thiab cov nqe lus siv.