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Mukatembenuza CO2 kukhala gasi wophatikizika, mumapeza zinthu zamtengo wapatali zopangira mankhwala. Ofufuza ku TU Wien akuwonetsa momwe izi zimagwirira ntchito ngakhale kutentha komanso kupanikizika kozungulira.
Aliyense amene amaganiza za CO2 mwina angaganize mwachangu mawu monga owopsa ku nyengo kapena zonyansa. Ngakhale CO2 inalipo kwa nthawi yayitali - zonyansa zoyera - njira zambiri zikupangidwira zomwe mpweya wowonjezera kutentha ungasinthidwe kukhala zida zamtengo wapatali. chemistry imakamba za "mankhwala owonjezera mtengo". Zatsopano zomwe zimapangitsa kuti izi zitheke zidapangidwa ku Vienna University of Technology ndipo posachedwapa zaperekedwa m'magazini ya Communications Chemistry.
Gulu lofufuza la Dominik Eder linapanga zinthu zatsopano zomwe zimathandizira kutembenuka kwa CO2. Awa ndi ma MOCHA - awa ndi mankhwala a organometallic chalcogenolate omwe amagwira ntchito ngati chothandizira. Zotsatira za kutembenuka kwa electrochemical ndi gasi kaphatikizidwe, kapena syngas mwachidule, zomwe ndizofunikira kwambiri pamakampani opanga mankhwala.
CO2 imakhala gasi wophatikizika
Syngas ndi osakaniza a carbon monoxide (CO), haidrojeni (H2) ndi mpweya wina ndipo amagwiritsidwa ntchito ngati zopangira zinthu zina. Chimodzi mwazinthu zofunika kwambiri zomwe zimagwiritsidwa ntchito ndi feteleza, momwe ammonia amapangidwa kuchokera ku gasi wa synthesis. Komabe, itha kugwiritsidwanso ntchito popanga mafuta monga dizilo kapena kupanga methanol, yomwe imagwiritsidwa ntchito m'maselo amafuta. Popeza kutulutsa kwa CO2 m'mlengalenga kumakhala kogwiritsa ntchito mphamvu zambiri, ndizomveka kuchotsa CO2 ku zomera zamakampani. Kuyambira pamenepo itha kukhala poyambira zinthu zosiyanasiyana mankhwala.
Komabe, njira zakale zimafuna kutentha kwakukulu ndi kupanikizika komanso zopangira zodula. Chifukwa chake ofufuza a ku Viennese adafufuza zopangira zomwe ma syngas amathanso kupangidwa pakutentha kotsika komanso kupanikizika kozungulira. "Mochas amagwira ntchito mosiyana ndi zomwe zimagwiritsidwa ntchito masiku ano: M'malo mwa kutentha, magetsi amaperekedwa kuti ayambitse chothandizira ndi kuyambitsa kutembenuka kwa CO2 kukhala gasi," akufotokoza Mtsogoleri wa Gulu la Junior Dogukan Apaydin, yemwe amayang'anira njira zosinthira CO2 mu kafukufuku wamagulu ofufuza.
MOCHAs monga othetsa mavuto
Ma MOCHA amapanga gulu lazinthu zomwe zidapangidwa pafupifupi zaka 20 zapitazo, koma sizinapezebe ntchito. Zida zosakanizidwa ndi organic-inorganic hybrid zangotchuka m'zaka zaposachedwa. Ofufuza a TU adazindikira kuthekera kwa ma MOCHA ngati chothandizira ndipo adayesa nawo koyamba. Komabe, adakumana ndi zovuta zingapo: Njira zophatikizira zam'mbuyomu zimangotulutsa mankhwala ochepa ndipo zimafunikira nthawi yochulukirapo. "Pogwiritsa ntchito njira yathu yophatikizira, tinatha kuonjezera kwambiri kuchuluka kwa mankhwala ndikufupikitsa nthawi kuchokera ku 72 mpaka maola asanu," akufotokoza Apaydin ndondomeko yopangira buku la MOCHAs.
Mayesero oyambirira adawonetsa kuti ntchito yothandiza ya MOCHAs popanga mpweya wopangidwa kuchokera ku CO2 ikufanana ndi zomwe zakhazikitsidwa mpaka pano. Kuphatikiza apo, amafunikira mphamvu yocheperako popeza zonse zomwe zimachitika zimatha kutenthedwa firiji. Kuphatikiza apo, ma MOCHA atsimikizira kukhala okhazikika kwambiri. Atha kugwiritsidwa ntchito muzosungunulira zosiyanasiyana, kutentha kosiyana, kapena pansi pamikhalidwe yosiyana ya pH, ndikusunga mawonekedwe awo ngakhale pambuyo pa catalysis.
Komabe, pali magawo ena omwe gulu lozungulira Dogukan Apaydin ndi wophunzira udokotala Hannah Rabl akufufuzabe. Kugwiritsa ntchito maelekitirodi omwewo kangapo kuti apereke mphamvu monga momwe zilili pano kukuwonetsa kutsika pang'ono kwa magwiridwe antchito. Momwe kugwirizana pakati pa ma MOCHA ndi ma electrode kungapitirire patsogolo kuti ateteze kutsika kwa ntchitoyi tsopano akufufuzidwa muzoyesera za nthawi yaitali. "Tikadali koyambirira kugwiritsa ntchito," akutero a Dogukan Apaydin. “Ndimakonda kuyerekeza zimenezi ndi mapulaneti ozungulira dzuwa, amene zaka 30 zapitazo anali ocholoŵana kwambiri ndi okwera mtengo kupanga kusiyana ndi masiku ano. Pokhala ndi zofunikira zoyenera komanso zolinga zandale, komabe, ma MOCHA angagwiritsidwenso ntchito kwambiri m'tsogolomu posintha CO2 kukhala gasi wophatikizika ndipo motero amathandizira kuteteza nyengo," Apaydin ndi wotsimikiza.
