Ukadaulo watsopano wokomawu umapangitsa kukoma kowawa kukhala kothandiza kwambiri. googletag.cmd.push(function(){googletag.display('div-gpt-ad-1449240174198-2′);});
Mainjiniya ku Rice University akusintha mwachindunji carbon monoxide kukhala acetic acid (mankhwala omwe amagwiritsidwa ntchito kwambiri omwe amapatsa viniga kukoma kwamphamvu) kudzera mu chosinthira chopitilira, chomwe chingagwiritse ntchito bwino magetsi obwezerezedwanso kuti apange zinthu zoyeretsedwa kwambiri.
Njira yogwiritsira ntchito magetsi mu labotale ya mainjiniya a mankhwala ndi ma biomolecular ku Rice University's Brown School of Engineering yathetsa vuto la kuyesera kwakale kuchepetsa carbon monoxide (CO) kukhala acetic acid. Njirazi zimafuna njira zina zowonjezera kuti ziyeretsedwe.
Reactor yoteteza chilengedwe imagwiritsa ntchito nanometer cubic copper ngati chothandizira chachikulu komanso electrolyte yapadera yolimba.
Mu maola 150 ogwira ntchito mosalekeza m'ma laboratories, kuchuluka kwa acetic acid mu aqueous solution yopangidwa ndi chipangizochi kunali mpaka 2%. Kuyera kwa asidi kuli pafupifupi 98%, zomwe ndi zabwino kwambiri kuposa asidi yomwe imapangidwa ndi kuyesa koyambirira kusintha carbon monoxide kukhala mafuta amadzimadzi.
Asidi ya acetic imagwiritsidwa ntchito ngati chosungira zinthu m'zachipatala pamodzi ndi viniga ndi zakudya zina. Imagwiritsidwa ntchito ngati chosungunulira inki, utoto ndi zokutira; popanga vinyl acetate, vinyl acetate ndiye chimake cha guluu woyera wamba.
Njira ya Mpunga imachokera pa reactor mu labotale ya Wang ndipo imapanga formic acid kuchokera ku carbon dioxide (CO2). Kafukufukuyu adakhazikitsa maziko ofunikira kwa Wang (Packard Fellow yemwe wasankhidwa posachedwapa), yemwe adalandira ndalama zokwana $2 miliyoni za National Science Foundation (NSF) kuti apitirize kufufuza njira zosinthira mpweya wowonjezera kutentha kukhala mafuta amadzimadzi.
Wang anati: “Tikusintha zinthu zathu kuchokera ku chinthu chimodzi cha kaboni kukhala chinthu cha kaboni ziwiri, zomwe zimakhala zovuta kwambiri.” “Anthu nthawi zambiri amapanga acetic acid mu ma electrolyte amadzimadzi, koma amachitabe bwino ndipo zinthuzo zimakhala vuto la kulekanitsa ma electrolyte.”
Senftle anawonjezera kuti: “Zachidziwikire, asidi wa acetic nthawi zambiri sapangidwa kuchokera ku CO kapena CO2.” “Mfundo yofunika kuiganizira ndi iyi: tikuyamwa mpweya woipa womwe tikufuna kuchepetsa ndikuusandutsa zinthu zothandiza.”
Kulumikizana mosamala kunachitika pakati pa chothandizira cha mkuwa ndi electrolyte yolimba, ndipo electrolyte yolimba idasamutsidwa kuchokera ku formic acid reactor. Wang anati: “Nthawi zina mkuwa umapanga mankhwala m'njira ziwiri zosiyana.” “Ukhoza kuchepetsa carbon monoxide kukhala acetic acid ndi mowa. Tinapanga cube yokhala ndi nkhope yomwe ingalamulire kulumikizana kwa carbon-carbon, ndipo m'mphepete mwa carbon-carbon coupling imabweretsa acetic acid m'malo mwa zinthu zina.”
Senftle ndi gulu lake anagwiritsa ntchito njira yowerengera zinthu kuti akonze mawonekedwe a kyubi. Iye anati: “Timatha kuwonetsa mtundu wa m’mbali mwa kyubi, zomwe kwenikweni zimakhala ndi malo ozungulira kwambiri. Zimathandiza kuswa makiyi ena a CO, kotero kuti chinthucho chikhoza kusinthidwa mwanjira ina.” Masamba ambiri a m’mbali amathandiza kuswa mgwirizano woyenera panthawi yoyenera.”
Senftler anati pulojekitiyi ndi chitsanzo chabwino cha momwe chiphunzitso ndi kuyesera ziyenera kugwirizanirana. Iye anati: "Kuyambira kuphatikiza zigawo mu reactor mpaka njira ya atomiki, ichi ndi chitsanzo chabwino cha milingo yambiri ya uinjiniya." "Ikugwirizana ndi mutu wa nanotechnology ya mamolekyu ndipo ikuwonetsa momwe tingaikulitsire ku zida zenizeni."
Wang anati gawo lotsatira pakupanga makina osinthika ndikukonza kukhazikika kwa makinawo ndikuchepetsa mphamvu zomwe zimafunikira pa ntchitoyi.
Zhu Peng, Liu Chunyan ndi Xia Chuan, ophunzira omaliza maphunziro awo ku Rice University, ndi omwe ali ndi udindo waukulu pa nkhaniyi. J. Evans Attwell-Welch, katswiri wofufuza za postdoctoral, ndiye amene akuyang'anira nkhaniyi.
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