Cargando…

Mechanism of the noncatalytic oxidation of soot using in situ transmission electron microscopy

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 sample...

Descripción completa

Detalles Bibliográficos
Autores principales: Gao, Ming, Jang, Yongjun, Ding, Lu, Gao, Yunfei, Dai, Sheng, Dai, Zhenghua, Yu, Guangsuo, Yang, Wenming, Wang, Fuchen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10558545/
https://www.ncbi.nlm.nih.gov/pubmed/37802991
http://dx.doi.org/10.1038/s41467-023-41726-4
_version_ 1785117300378042368
author Gao, Ming
Jang, Yongjun
Ding, Lu
Gao, Yunfei
Dai, Sheng
Dai, Zhenghua
Yu, Guangsuo
Yang, Wenming
Wang, Fuchen
author_facet Gao, Ming
Jang, Yongjun
Ding, Lu
Gao, Yunfei
Dai, Sheng
Dai, Zhenghua
Yu, Guangsuo
Yang, Wenming
Wang, Fuchen
author_sort Gao, Ming
collection PubMed
description 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.
format Online
Article
Text
id pubmed-10558545
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher Nature Publishing Group UK
record_format MEDLINE/PubMed
spelling pubmed-105585452023-10-08 Mechanism of the noncatalytic oxidation of soot using in situ transmission electron microscopy Gao, Ming Jang, Yongjun Ding, Lu Gao, Yunfei Dai, Sheng Dai, Zhenghua Yu, Guangsuo Yang, Wenming Wang, Fuchen Nat Commun Article 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. Nature Publishing Group UK 2023-10-06 /pmc/articles/PMC10558545/ /pubmed/37802991 http://dx.doi.org/10.1038/s41467-023-41726-4 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Gao, Ming
Jang, Yongjun
Ding, Lu
Gao, Yunfei
Dai, Sheng
Dai, Zhenghua
Yu, Guangsuo
Yang, Wenming
Wang, Fuchen
Mechanism of the noncatalytic oxidation of soot using in situ transmission electron microscopy
title Mechanism of the noncatalytic oxidation of soot using in situ transmission electron microscopy
title_full Mechanism of the noncatalytic oxidation of soot using in situ transmission electron microscopy
title_fullStr Mechanism of the noncatalytic oxidation of soot using in situ transmission electron microscopy
title_full_unstemmed Mechanism of the noncatalytic oxidation of soot using in situ transmission electron microscopy
title_short Mechanism of the noncatalytic oxidation of soot using in situ transmission electron microscopy
title_sort mechanism of the noncatalytic oxidation of soot using in situ transmission electron microscopy
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10558545/
https://www.ncbi.nlm.nih.gov/pubmed/37802991
http://dx.doi.org/10.1038/s41467-023-41726-4
work_keys_str_mv AT gaoming mechanismofthenoncatalyticoxidationofsootusinginsitutransmissionelectronmicroscopy
AT jangyongjun mechanismofthenoncatalyticoxidationofsootusinginsitutransmissionelectronmicroscopy
AT dinglu mechanismofthenoncatalyticoxidationofsootusinginsitutransmissionelectronmicroscopy
AT gaoyunfei mechanismofthenoncatalyticoxidationofsootusinginsitutransmissionelectronmicroscopy
AT daisheng mechanismofthenoncatalyticoxidationofsootusinginsitutransmissionelectronmicroscopy
AT daizhenghua mechanismofthenoncatalyticoxidationofsootusinginsitutransmissionelectronmicroscopy
AT yuguangsuo mechanismofthenoncatalyticoxidationofsootusinginsitutransmissionelectronmicroscopy
AT yangwenming mechanismofthenoncatalyticoxidationofsootusinginsitutransmissionelectronmicroscopy
AT wangfuchen mechanismofthenoncatalyticoxidationofsootusinginsitutransmissionelectronmicroscopy