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Ngoku, bebhala kwijenali iJoule, u-Ung Lee kunye noogxa bakhe baxela uphando lwesityalo sovavanyo sokufaka i-hydrogenating carbon dioxide ukuvelisa i-formic acid (K. Kim et al., Joule https://doi.org/10.1016/j. Joule.2024.01). 003;2024). Olu phononongo lubonisa ukwenziwa ngcono kwezinto ezibalulekileyo zenkqubo yokuvelisa. Kwinqanaba le-reactor, ukuqwalaselwa kweempawu eziphambili ze-catalyst ezifana nokusebenza kakuhle kwe-catalytic, i-morphology, ukunyibilika kwamanzi, ukuzinza kobushushu, kunye nokufumaneka kwezixhobo ezinkulu kunokunceda ukuphucula ukusebenza kwe-reactor ngelixa kugcinwa ubungakanani be-feedstock obufunekayo buphantsi. Apha, ababhali basebenzise i-ruthenium (Ru) catalyst exhaswa kwisakhelo se-triazine bipyridyl-terephthalonitrile esixutyiweyo (esibizwa ngokuba yiRu/bpyTNCTF). Baye baphucula ukukhethwa kwee-amine pairs ezifanelekileyo zokubamba nokuguqula i-CO2 ngempumelelo, bekhetha i-N-methylpyrrolidine (NMPI) njenge-amine esabelayo yokubamba i-CO2 kwaye ikhuthaze i-hydrogenation reaction ukuze yenze i-formate, kunye ne-N-butyl-N-imidazole (NBIM) ukuba isebenze njenge-amine esabelayo. Emva kokuba beyihlukanisile i-amine, i-formate inokwahlulwa ukuze kuveliswe ngakumbi i-FA ngokwenziwa kwe-trans-adduct. Ukongeza, baphucule iimeko zokusebenza kwe-reactor ngokweqondo lobushushu, uxinzelelo kunye nomlinganiselo we-H2/CO2 ukwandisa ukuguqulwa kwe-CO2. Ngokuphathelele uyilo lwenkqubo, baphuhlise isixhobo esiqulathe i-reactor yebhedi ethontsizayo kunye neekholamu ezintathu eziqhubekayo ze-distillation. I-bicarbonate eseleyo iyanyibilikiswa kwikholamu yokuqala; i-NBIM ilungiswa ngokwenza i-trans adduct kwikholamu yesibini; imveliso ye-FA ifunyanwa kwikholamu yesithathu; Ukukhethwa kwezinto ze-reactor kunye nenqaba nako kuqwalaselwe ngononophelo, ngentsimbi engagqwaliyo (SUS316L) ekhethiweyo kwiindawo ezininzi, kunye nezinto zorhwebo ezisekwe kwi-zirconium (Zr702) ezikhethiweyo kwinqaba yesithathu ukunciphisa ukugqwala kwe-reactor ngenxa yokuxhathisa kwayo ukugqwala kwendibano yamafutha. , kwaye ixabiso liphantsi kakhulu.
Emva kokuphucula inkqubo yemveliso ngononophelo—ukukhetha isitokhwe esifanelekileyo, ukuyila i-reactor yebhedi ethontsizayo kunye neekholamu ezintathu eziqhubekayo zokunyibilikisa, ukukhetha ngononophelo izinto zomzimba wekholamu kunye nokupakisha kwangaphakathi ukunciphisa ukugqwala, kunye nokulungisa iimeko zokusebenza kwe-reactor—ababhali babonisa ukuba isityalo sovavanyo esinomthamo wemihla ngemihla we-10 kg sakhiwe sakha i-fuel assembly ekwaziyo ukugcina ukusebenza okuzinzileyo kangangeeyure ezingaphezu kwe-100. Ngokusebenzisa uhlalutyo olucokisekileyo kunye nomjikelo wobomi, isityalo sovavanyo sinciphise iindleko nge-37% kunye nokukwazi ukufudumala kwehlabathi nge-42% xa kuthelekiswa neenkqubo zemveli zokuvelisa i-fuel assembly. Ukongeza, ukusebenza kakuhle kwenkqubo kufikelela kwi-21%, kwaye ukusebenza kakuhle kwamandla kuyafana noko kwezithuthi ze-fuel cell ezisebenza nge-hydrogen.
Qiao, M. Ukuveliswa kwe-formic acid kwi-hydrogenated carbon dioxide. Ubunjineli beKhemikhali yeNdalo 1, 205 (2024). https://doi.org/10.1038/s44286-024-00044-2