重油浆态床加氢裂化催化剂及其原子尺度调控研究进展OA

The design and development of slurry phase hydrocracking catalysts are key to the efficient conversion of heavy oil.Traditional transition metal sulfide catalysts are prone to agglomerate during hydrogenation reactions,resulting in low metal atom utilization rate and decreased hydrogenation performance.Single-atom catalysts have the highest metal atom utilization rate and adjustable active center structure,which show excellent hydrogenation performance,providing new ideas for the design of heavy oil slurry phase hydrocracking catalysts.Research progress on heavy oil slurry phase hydrocracking catalysts in recent years was reviewed,with particular emphasis on the structural characteristics and catalytic performance differences between nano-scale catalysts and single-atom catalysts.At the atomic scale,design strategies for heavy oil hydrocracking catalysts were then proposed,including coordination structure regulation,dual-atom site cooperative regulation,and single-atom-sulfide coupling regulation.In addition,the issues and challenges of single-atom catalysts in heavy oil slurry phase hydrocracking were prospected.