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Nje, ngokutlola encwadini i-Joule, u-Ung Lee nabalingani bakhe babika irhubhululo lesitjalo sokulinga sokukhiqiza i-carbon dioxide ukukhiqiza i-formic acid (K. Kim et al., Joule https://doi.org/10.1016/j. Joule.2024.01 ). 003;2024). Irhubhululo leli litjengisa ukuthuthukiswa kwezinto ezinengi eziqakathekileko zendlela yokukhiqiza. Ezingeni le-reactor, ukucabangela izakhiwo eziqakathekileko ze-catalyst ezifana nokusebenza kuhle kwe-catalytic, ubujamo, ukuncibilika kwamanzi, ukuzinza kokutjhisa, nokutholakala kwemithombo emikhulu kungasiza ukuthuthukisa ukusebenza kwe-reactor ngesikhathi kugcinwa inani lezinto ezitlhogekako ziphasi. Lapha, abalobi basebenzise i-ruthenium (Ru) catalyst esekelwe ku-mixed covalent triazine bipyridyl-terephthalonitrile framework (ebizwa nge-Ru/bpyTNCTF). Bathuthukisa ukukhethwa kwama-amine afaneleko wokubanjwa nokutjhugululwa kwe-CO2, bakhetha i-N-methylpyrrolidine (NMPI) njenge-amine esebenzako ukubamba i-CO2 nokukhuthaza ukusabela kwe-hydrogenation ukwakha i-formate, kanye ne-N-butyl-N-imidazole (NBIM) ukusebenza njenge-amine esebenzako. Ngemva kokuhlukaniswa kwe-amine, i-formate ingahlukaniswa ukuze kukhiqizwe i-FA ngokwakhiwa kwe-trans-adduct. Ukungezelela, benza ngcono ubujamo bokusebenza kwe-reactor ngokuya ngezinga lokutjhisa, umfutho kanye nesilinganiso se-H2/CO2 ukukhulisa ukutjhuguluka kwe-CO2. Ngokuya ngokuklanywa kwenqubo, benza isisetjenziswa esine-reactor ye-trickling bed kanye namakholomu amathathu wokuvundisa aragela phambili. I-bicarbonate eseleko ivuthwa kukholomu yokuthoma; I-NBIM ilungiswa ngokwakha i-trans adduct kukholomu yesibili; umkhiqizo we-FA utholakala kukholomu yesithathu; Ukukhethwa kwezinto zokwenza i-reactor ne-tower nakho kwaqalwa ngokutjheja, nge-stainless steel (SUS316L) ekhethelwe iingcenye ezinengi, kanye nezinto ezisekelwe ku-zirconium (Zr702) ezikhethelwe i-tower yesithathu ukwehlisa ukugqwala kwe-reactor ngebanga lokujamelana nokugqwala kwe-fuel assembly. , begodu iindleko ziphasi khulu.
Ngemva kokuthuthukisa ngokutjheja ikambiso yokukhiqiza—ukukhetha ukudla okuhle, ukuklama i-reactor ye-trickling bed kanye namakholomu amathathu wokuvundisa aragela phambili, ukukhetha ngokutjheja izinto zomzimba wekholomu nokupakisha kwangaphakathi ukwehlisa ukugqwala, nokuhlela kuhle ubujamo bokusebenza kwe-reactor—abatloli batjengisa bona isitjalo sokuhlola esinamandla wamalanga woke we-10 ukugcina ukusebenza okuzinzileko ama-awa angaphezu kwe-100. Ngokuhlaziywa ngokutjheja ukusebenza nokuhlaziywa komjikelezo wokuphila, isitjalo sokulinga sehlise iindleko ngama-37% kanye nokufuthumala kwephasi ngama-42% nayiqathaniswa neenkambo zokukhiqiza ezijayelekileko zokuhlanganisa amafutha. Ukungezelela, ukusebenza kuhle kwenkambo kufikelela ku-21%, begodu ukusebenza kuhle kwamandla kwayo kuyafana nekweenkoloyi ezisebenza nge-hydrogen.
U-Qiao, M. Ukukhiqizwa kwe-formic acid evela ku-hydrogenated carbon dioxide. I-Nature Chemical Engineering 1, 205 (2024). https://doi.org/10.1038/s44286-024-00044-2