煤石墨化新模型:CAST模型——机理与意义OA

[Objective and Methods]Coal graphitization is a multi-stage process with abrupt changes rather than linear evolution.So far,its inherent driving mechanisms have not yet been fully elucidated.Notably,twisted graphene was ob-served in the process of coal graphitization in 2025,providing a new opportunity to reveal the essence of this structural transformation.[Results and Conclusions]By combining previous research results,this study proposes a novel coal graphitization model that consists of condensation,alignment,stacking,and twisting(CAST).The four parts of the CAST model are organically integrated,collectively forming a continuous and dynamic evolutionary process.Most espe-cially,no absolute boundaries exist among alignment,stacking,and twisting;instead,the three processes interact manu-ally,jointly controlling and adjusting the progress and degree of coal graphitization.Theoretically,the novel CAST mod-el clarifies the fundamental nature of coal graphitization as evolution from short-range disorder into long-range order.Therefore,this model provides a new perspective for gaining deep insights into the coal graphitization process and even enables the reconstruction of the underlying mechanisms of coalification.Practically,this novel model can direct the re-search focus toward the performance of coal as raw materials rather than merely as fuels,thus maximizing its value as"black gold".