文献类型：期刊文献

英文题名：Mechanism of the noncatalytic oxidation of soot using in situ transmission electron microscopy

作者：Gao, Ming[1,2,3];Jang, Yongjun[4,5];Ding, Lu[1,3];Gao, Yunfei[1,3];Dai, Sheng[4,5];Dai, Zhenghua[1,3];Yu, Guangsuo[1,3];Yang, Wenming[2];Wang, Fuchen[1,3]

机构：[1]East China Univ Sci & Technol, Inst Clean Coal Technol, Shanghai 200237, Peoples R China;[2]Natl Univ Singapore, Dept Mech Engn, Singapore 117576, Singapore;[3]Minist Educ, Engn Res Ctr Resource Utilizat Carbon Containing W, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[5]East China Univ Sci & Technol, Sch Chem & Mol Engn, Inst Fine Chem, Feringa Nobel Prize Scientist Joint Res Ctr, Shanghai 200237, Peoples R China

年份：2023

卷号：14

期号：1

外文期刊名：NATURE COMMUNICATIONS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001169336700006)】；

基金：This work was financed by the National Natural Science Foundation of China (22178114) (F.C.W.) and the China Scholarship Council (M.G.), the Science and Technology Commission of Shanghai Municipality (22ZR1415700) (S.D.), Shanghai Rising-star Program (20QA1402400) (S.D). Thanks for the support of the Frontiers Science Center for Materiobiology and Dynamic Chemistry and the Feringa Nobel Prize Scientist Joint Research Center at East China University of Science and Technology.

语种：英文

摘要：Soot generation is a major challenge in industries. The elimination of soot is particularly crucial to reduce pollutant emissions and boost carbon conversion. The mechanisms for soot oxidation are complex, with quantified models obtained under in situ conditions still missing. We prepare soot samples via noncatalytic partial oxidation of methane. Various oxidation models are established based on the results of in situ transmission electron microscopy experiments. A quantified maturity parameter is proposed and used to categorize the soot particles according to the nanostructure at various maturity levels, which in turn lead to different oxidation mechanisms. To tackle the challenges in the kinetic analysis of soot aggregates, a simplification model is proposed and soot oxidation rates are quantified. In addition, a special core-shell separation model is revealed through in situ analysis and kinetic studies. In this study, we obtain important quantified models for soot oxidation under in situ conditions. In this work, authors investigate mechanisms of noncatalytic soot oxidation and establish models applicable to different types of soot based on the particles oxidation behaviour using in-situ transmission electron microscopy.