Direct conversion of N2 and O2: status, challenge and perspective. Issue 12 (8th March 2022)

• Record Type: Journal Article
• Authors: Li, Di; Zan, Lingxing; Chen, Shiming; Shi, Zhang-Jie; Chen, Ping; Xi, Zhenfeng; Deng, Dehui
• Is Part Of: National science review. Volume 9:Issue 12(2022)
• Publication Date: 2022-03-08
• Subjects: key components of air -- conversion of N2 and O2 -- NOx synthesis -- C–N–O organics; Science -- Periodicals; 505
• DOI: 10.1093/nsr/nwac042
• Languages: English
• ISSNs: 2095-5138

Abstract

Abstract: As key components of air, nitrogen (N2 ) and oxygen (O2 ) are the vital constituents of lives. Synthesis of NO2, and C–N–O organics direct from N2 and O2, rather than from an intermediate NH3 (known as the Haber–Bosch process), is tantalizing. However, the extremely strong N≡N triple bond (945 kJ mol –1 ) and the nonpolar stable electron configuration of dinitrogen lead to its conversion being extensively energy demanding. The further selective synthesis of high-value C–N–O organics directly from N2, O2 and C-containing molecules is attractive yet greatly challenging from both scientific and engineering perspectives. Enormous efforts have been dedicated to the direct conversion of N2 and O2 via traditional and novel techniques, including thermochemical, plasma, electrochemical, ultrasonic and photochemical conversion. In this review, we aim to provide a thorough comprehension of the status and challenge of the direct conversion of N2, O2 and C-containing molecules (particularly N2 and O2 ). Moreover, we will propose some future perspectives to stimulate more inspiration from the scientific community to tackle the scientific and engineering challenges. Abstract : The authors elaborated on the status and challenges of direct conversion of N2, O2, and C-containing molecules (particularly N2 and O2 ) and proposed some future perspectives and development strategies.