Tinokutendai nekushanyira Nature.com. Shanduro yebrowser yauri kushandisa ine rutsigiro rushoma rweCSS. Kuti uwane mhedzisiro yakanaka, tinokurudzira kushandisa shanduro itsva yebrowser yako (kana kudzima compatibility mode muInternet Explorer). Panguva ino, kuti tive nechokwadi chekuti rutsigiro rwuripo, tiri kuratidza webhusaiti iyi pasina styling kana JavaScript.
Iye zvino, vachinyora mujenari raJoule, Ung Lee nevamwe vake vanotaura nezvekudzidza kwechirimwa chekuedza chekuisa hydrogenating carbon dioxide kuti igadzire formic acid (K. Kim et al., Joule https://doi.org/10.1016/j. Joule.2024.01). 003;2024). Chidzidzo ichi chinoratidza kugadziriswa kwezvinhu zvakakosha zvekugadzira. Padanho reactor, kufunga nezvezvinhu zvakakosha zve catalytic zvakaita se catalytic efficiency, morphology, water solubility, thermal stability, uye kuwaniswa kwezviwanikwa zvakawanda kunogona kubatsira kuvandudza mashandiro eactor ukuwo huwandu hwezvikafu hunodiwa huchiramba hwakaderera. Pano, vanyori vakashandisa ruthenium (Ru) catalyst inotsigirwa pa mixed covalent triazine bipyridyl-terephthalonitrile framework (inonzi Ru/bpyTNCTF). Vakagadzirisa kusarudzwa kwemaamine pairs akakodzera kuti CO2 ibatwe zvakanaka uye ishandurwe, vachisarudza N-methylpyrrolidine (NMPI) seamine inogadzirisa kubata CO2 uye kukurudzira hydrogenation reaction kuti igadzire formate, uye N-butyl-N-imidazole (NBIM) kuti ishande seamine inogadzirisa. Mushure mekuparadzanisa amine, formate inogona kuparadzaniswa kuti iwedzere kugadzirwa kweFA kuburikidza nekuumbwa kwetrans-adduct. Pamusoro pezvo, vakavandudza mamiriro ekushanda kwereactor maererano netembiricha, kumanikidzwa uye H2/CO2 ratio kuti vawedzere CO2 conversion. Panyaya yekugadzira maitiro, vakagadzira mudziyo une trickling bed reactor uye matatu continuous distillation columns. Iyo residual bicarbonate inonyungudutswa mukoramu yekutanga; NBIM inogadzirwa nekugadzira trans adduct mukoramu yechipiri; chigadzirwa cheFA chinowanikwa mukoramu yechitatu; Sarudzo yezvinhu zvereactor neshongwe yakafungwawo nekungwarira, nesimbi isina ngura (SUS316L) yakasarudzwa yezvikamu zvakawanda, uye chinhu chekutengesa chakagadzirwa nezirconium (Zr702) chakasarudzwa cheshongwe yechitatu kuderedza ngura yereactor nekuda kwekusagona kwayo kurumwa nemafuta, uye mutengo wacho wakaderera.
Mushure mekugadzirisa maitiro ekugadzira nekungwarira—kusarudza chikafu chakakodzera, kugadzira reactor inoyerera uye makoramu matatu anoenderera mberi ekunyungudutsa, kusarudza nokungwarira zvinhu zvemuviri wekoramu uye kurongedza kwemukati kuderedza ngura, uye kugadzirisa mamiriro ekushanda kwereactor—vanyori vanoratidza kuti fekitari yemutyairi ine simba re10 pazuva yakavakwa makirogiramu ekuunganidza mafuta anokwanisa kuchengetedza kushanda kwakasimba kwemaawa anopfuura 100. Kuburikidza nekunyatsoongorora kugona uye hupenyu, fekitari yemutyairi yakaderedza mitengo ne37% uye mukana wekupisa kwepasi rose ne42% zvichienzaniswa nemaitiro ekugadzira mafuta ekare. Pamusoro pezvo, kushanda kwese kwemaitiro aya kunosvika 21%, uye kushanda kwayo nesimba kwakafanana nekwemotokari dzemaseru emafuta dzinofambiswa nehydrogen.
Qiao, M. Kugadzirwa kwe formic acid kubva mu hydrogenated carbon dioxide. Nature Chemical Engineering 1, 205 (2024). https://doi.org/10.1038/s44286-024-00044-2