Catalytic Production of Aromatic Amines From Nitroaromatics ‐ Adressing a Critical Challenge in Environmental Remediation

The present work reviews the continuous flow hydrogenation of nitroaromatic compounds (NACs) to aromatic amines, highlighting its significance in sustainable chemical manufacturing. These processes offer enhanced efficiency, scalability, and safety compared to traditional batch methods, addressing the environmental concerns associated with NAC contamination. In this context, the flow mode processes of NACs hydrogenation may be considered as tools for catalytically‐driven extraction of fine chemical products. Within this review, key aspects, including an overview of flow reactor designs—such as packed‐bed and microreactors—optimizing heat and mass transfer are discussed. Additionally, various catalytic materials, including bimetallic nanoparticles and metal‐organic frameworks, are explored for their improved stability and selectivity in NAC reduction. The kinetics of these reactions aids in understanding the factors affecting reaction, and mass transfer rates. Despite the advantages, challenges remain, including catalyst deactivation and reactor design complexities, particularly during scale‐up for industrial applications. Future trends indicate a shift towards hybrid systems integrating photocatalysis and biocatalysis, enhancing the versatility of continuous flow processes. Ultimately, the adoption of these technologies is anticipated to play a crucial role in the circular economy by converting hazardous waste into valuable products, thereby fostering innovation and environmental preservation in the chemical industry.