Scalable Electrosynthesis of Formamide through C-N Coupling at the Industrially Relevant Current Density of 120â
mA cm-2.
Angew Chem Int Ed Engl
; 61(44): e202213009, 2022 Nov 02.
Article
em En
| MEDLINE
| ID: mdl-36106683
ABSTRACT
The scalable and durable electrosynthesis of high-valued organonitrogen compounds from carbon- and nitrogen-containing small molecules, especially operating at a high current density, is highly desirable. Here, a one-pot electrooxidation method to synthesize formamide (HCONH2 ) from methanol and ammonia over a commercial boron-doped diamond (BDD) catalyst is reported. The formamide selectivity from methanol and formamide Faradaic efficiency (FE HCONH 2 ${{_{{\rm HCONH}{_{2}}}}}$ ) achieve 73.2 % and 41.2 % at the current density of 120â
mA cm-2 with high durability. The C-N bond originates from the nucleophilic attack of ammonia on an aldehyde-like intermediate. Impressively, an 8â
L electrolyzer is employed for the pilot plant test over a 2200â
cm2 BDD electrode, which exhibits 33.5 % FE HCONH 2 ${{_{{\rm HCONH}{_{2}}}}}$ at 120â
mA cm-2 (current 264â
A) with a yield rate of 36.9â
g h-1 , demonstrating the potential of this technique for large-scale electrosynthesis of formamide.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2022
Tipo de documento:
Article