Three decades of topic evolution, hot spot mining and prospect in CCUS Studies based on CitNetExplorer

ABSTRACT: As a major strategic technology for reducing greenhouse gas emissions and ensuring energy security, carbon capture, utilization, and storage (CCUS) is of great significance to large-scale emission reduction. From the perspective of knowledge discovery, it is important to analyse the study progress based on existing study achievements, excavate the evolution characteristics of study topics over time, review stage-specific findings,and construct CCUS domain knowledge map.This will help researchers gain an overall understanding of CCUS studies and promote the industry-college-research cooperation in respect to CCUS. Based on the Web of Science (WOS) database platform and CitNet-Explorer software, the present study explore the international research progress, topic evolution track, research hotspot and research trend of CCUS technology since its birth nearly 30 years ago, using bibliometric method, citation network visualization analysis method and cluster analysis method. Through the analysis of literature citation network, it is found that: 16 CCUS topics, 6 hotspots have been studied in the last three decades. The topics of CCUS studies present an evolution path from CCUS technology security and economicfeasibility analysis to CCUS technological popularization, and then CCUS technological improvement and development. Cutting-edge CCUS looks at the process and infrastructure construction, cost effectiveness and development prospect analysis. CCUS focuses on improvement of process technologies and related infrastructure