CLC number:
On-line Access: 2024-08-27
Received: 2023-10-17
Revision Accepted: 2024-05-08
Crosschecked: 2023-01-13
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Zheng-liang HUANG, Yun-bo YU, Qi SONG, Yao YANG, Jing-yuan SUN, Jing-dai WANG, Yong-rong YANG. Hole-growth phenomenon during pyrolysis of a cation-exchange resin particle[J]. Journal of Zhejiang University Science A, 2022, 23(12): 974-987.
@article{title="Hole-growth phenomenon during pyrolysis of a cation-exchange resin particle",
author="Zheng-liang HUANG, Yun-bo YU, Qi SONG, Yao YANG, Jing-yuan SUN, Jing-dai WANG, Yong-rong YANG",
journal="Journal of Zhejiang University Science A",
volume="23",
number="12",
pages="974-987",
year="2022",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A2200233"
}
%0 Journal Article
%T Hole-growth phenomenon during pyrolysis of a cation-exchange resin particle
%A Zheng-liang HUANG
%A Yun-bo YU
%A Qi SONG
%A Yao YANG
%A Jing-yuan SUN
%A Jing-dai WANG
%A Yong-rong YANG
%J Journal of Zhejiang University SCIENCE A
%V 23
%N 12
%P 974-987
%@ 1673-565X
%D 2022
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A2200233
TY - JOUR
T1 - Hole-growth phenomenon during pyrolysis of a cation-exchange resin particle
A1 - Zheng-liang HUANG
A1 - Yun-bo YU
A1 - Qi SONG
A1 - Yao YANG
A1 - Jing-yuan SUN
A1 - Jing-dai WANG
A1 - Yong-rong YANG
J0 - Journal of Zhejiang University Science A
VL - 23
IS - 12
SP - 974
EP - 987
%@ 1673-565X
Y1 - 2022
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A2200233
Abstract: A novel central hole-expansion phenomenon is identified, in which the cation-exchange resin is pyrolyzed in a mixed atmosphere of nitrogen and oxygen at 400–500°C. In this reaction, the reaction path is predictable and always starts from the center of the resin particle to form a central hole, then continues and expands around the hole, finally forming a uniformly distributed hole group; the particle surface remains intact. Analysis shows that this formation mode is due to the different reaction paths of sulfonic groups between the surface and interior of the particle, caused by the temperature difference. On the surface, transformation reactions happen at high temperatures (410–500°C) to form stable organic sulfur structures, while decomposition occurs inside the particle at a relatively low temperature (<410 °C) and promotes complete pyrolysis of the copolymer matrix to form holes.
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