What do we know about research on carbon capture, utilization and storage (CCUS) in China and the United States? Insights from the systematic review

Abstract Carbon dioxide capture, utilization and storage (CCUS) technology is an emerging technology with large-scale emission reduction potential and an essential component of the global response to climate change to achieve carbon neutrality goals. As the two most important countries in global climate governance, it is an exciting task to systematically review and examine the current status and trends of research in the field of CCUS in China and the United States. This paper used bibliometric tools to systematically sort out and analyze the peer-reviewed articles on the Web of Science in China and the United States during 2000–2022. It provides the first quantitative analysis of the current status and recent trends of CCUS technology in China and the United States regarding research institutions, major groups and core authors, highly cited papers, influential journals, disciplinary distribution, research hotspots, and topic clustering. The results show a significant increase in research interest in this topic among scholars from both countries. The number of publications in the CCUS field in China and the United States was 1196 and 1302, respectively, showing an increasing trend. China and the United States have become the most influential countries in the area of CCUS. And the United States has a more significant academic influence on a global scale. Based on the differences in the national conditions of the two countries, the research hotspots in the field of CCUS in China and the United States show the characteristics of diversification and differentiation. China and the United States pay attention to different research hotspots or have different focuses in different periods. This paper also finds that new capture materials and technology development, geological storage monitoring and early warning, CO2 utilization and new energy development, sustainable business models, incentive policies and measures, and public awareness are critical directions for future research in the field of CCUS. To provide a comprehensive review and comparison of CCUS technology development in China and the United States. It helps to gain insight into the research differences and linkages between the two countries in the field of CCUS and identify the research gaps between them. And place some consensus that policymakers can use.