Concluding remarks: Sustainable nitrogen activation - are we there yet?

Area of Science:

• Chemistry
• Sustainable Chemistry
• Catalysis

Background:

• Dinitrogen activation is crucial for synthesizing ammonia and nitrates.
• Current methods, like the Haber-Bosch process, face sustainability challenges.
• Interdisciplinary research is needed to develop greener nitrogen fixation strategies.

Purpose of the Study:

• To provide an overview of diverse sustainable dinitrogen activation approaches.
• To identify commonalities and stimulate interdisciplinary connections.
• To establish a common energetic framework for understanding nitrogen reduction reactions.

Main Methods:

• Literature review and synthesis of research from various fields.
• Analysis of experimental aspects, including the role of nitrogen pressure.
• Theoretical deconstruction of the nitrogen reduction reaction mechanism.

Main Results:

• Identified commonalities across different sustainable nitrogen fixation methods.
• Provided perspectives on the utility of 15N2 isotopic labeling experiments.
• Proposed a unified energetic scale for evaluating nitrogen reduction approaches.

Conclusions:

• Green ammonia via a modified Haber-Bosch process is promising but not universally applicable.
• Alternative sustainable methods for dinitrogen activation are urgently required.
• Further interdisciplinary collaboration is essential for advancing nitrogen fixation.