BIBLIOMETRIC STUDY OF THE GREEN AMMONIA ECONOMY (2010–2025)

This study presents a comprehensive bibliometric analysis of the green ammonia economy, aiming to map its evolution, structure, and thematic trends from 2010 to 2025. Green ammonia is emerging as a key solution for hydrogen storage and carbon-free fuel in decarbonizing hard-to-abate sectors. The analysis uses a dataset of 2,520 peer-reviewed articles and reviews sourced from the Scopus database, employing R-Studio and VOSviewer for quantitative analysis of publication trends, citation impact, international collaborations, and keyword co-occurrence. The results reveal significant growth in research output, particularly after 2020, driven by global interest in low-carbon energy solutions. Geographically, China leads in publication volume, while the United Kingdom and the United States are central hubs for international research collaborations. Thematic analysis identifies four main clusters: core chemistry and electrochemical conversion, combustion science, techno-economic analysis, and engine applications. The field has transitioned from foundational studies to applied research and policy-oriented analysis. The study emphasizes the need for further interdisciplinary collaboration, particularly in socio-economic and policy research, to address the remaining challenges of commercial deployment and systemic integration of green ammonia technologies.