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Efficient carboxylation of styrene and carbon dioxide by single-atomic copper electrocatalyst.
- Source :
-
Journal of Colloid & Interface Science . Nov2021, Vol. 601, p378-384. 7p. - Publication Year :
- 2021
-
Abstract
- [Display omitted] Electrocarboxylation of olefins with carbon dioxide (CO 2) is a potential approach to produce carboxylates as synthetic intermediates of polymer and pharmaceuticals. Nonetheless, due to the intrinsic inertness of CO 2 at ambient conditions, the electrocarboxylation efficiency has been quite limited, typically with high applied potentials and low current densities. In this work, we demonstrate that nitrogen-coordinated single-atomic copper sites on carbon framework (Cu/N C) served as an excellent electrocatalyst for electrocarboxylation of styrene with CO 2. The Cu/N C catalyst allowed to efficiently activate CO 2 , followed by nucleophilic attack to carboxylate styrene to produce phenylsuccinic acid, thus leading the reaction toward the CO 2 activation pathway. The enhanced CO 2 activation capability enabled increased selectivity and activity for electrocarboxylation of styrene. The Faradaic efficiency of electrocarboxylation was 92%, suggesting most of the activated CO 2 proceeded to react with styrene rather than direct reduction to CO or CH 4. The electrocarboxylation exhibited almost 100% product selectivity toward phenylsuccinic acid, with a high partial current density of 58 mA·cm−2 at −2.2 V (vs. Ag/AgI), corresponding to an outstanding production rate of 216 mg·cm−2·h−1, substantially exceeding previously reported works. Our work suggests an exciting perspective in electrocarboxylation of olefins by rational design of CO 2 activation electrocatalysts. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CARBON dioxide
*STYRENE
*CARBOXYLATION
*COPPER
*DENSITY currents
Subjects
Details
- Language :
- English
- ISSN :
- 00219797
- Volume :
- 601
- Database :
- Academic Search Index
- Journal :
- Journal of Colloid & Interface Science
- Publication Type :
- Academic Journal
- Accession number :
- 151702498
- Full Text :
- https://doi.org/10.1016/j.jcis.2021.05.105