Transforming atmospheric CO2 into alternative fuels: a metal-free approach under ambient conditions

Autor:	Swadhin K. Mandal, Gonela Vijaykumar, Pradip Kumar Hota, Rameswar Bhattacharjee, Samaresh Chandra Sau, Ayan Datta, R. Govindarajan, Pavan K. Vardhanapu
Rok vydání:	2019
Předmět:	010405 organic chemistry Formic acid Sodium formate Bicarbonate General Chemistry 010402 general chemistry Photochemistry 01 natural sciences 0104 chemical sciences Adduct chemistry.chemical_compound Hydrolysis chemistry Density functional theory Methanol Carbene
Zdroj:	Chemical Science. 10:1879-1884
ISSN:	2041-6539 2041-6520
DOI:	10.1039/c8sc03581d
Popis:	This work demonstrates the first-ever completely metal-free approach to the capture of CO2 from air followed by reduction to methoxyborane (which produces methanol on hydrolysis) or sodium formate (which produces formic acid on hydrolysis) under ambient conditions. This was accomplished using an abnormal N-heterocyclic carbene (aNHC)–borane adduct. The intermediate involved in CO2 capture (aNHC-H, HCOO, B(OH)3) was structurally characterized by single-crystal X-ray diffraction. Interestingly, the captured CO2 can be released by heating the intermediate, or by passing this compound through an ion-exchange resin. The capture of CO2 from air can even proceed in the solid state via the formation of a bicarbonate complex (aNHC-H, HCO3, B(OH)3), which was also structurally characterized. A detailed mechanism for this process is proposed based on tandem density functional theory calculations and experiments.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7b28a87992c8838078062c9afa4f4cce https://doi.org/10.1039/c8sc03581d Zobrazit plný text záznamu