Carbon Molecular Sieve (CMS) is an ultramicroporous carbonaceous adsorbent, which is widely used in the field of gas separation, especially for air nitrogen separation, as distinguished from activated carbon due to the uniformity of micropore distribution. The separation of nitrogen from air by pressure swing adsorption (PSA method) using carbon molecular sieve in a medium and small scale nitrogen production process is superior to the conventional air cold separation method. Carbon molecular sieves can be prepared from nuts, wood, polyethylene, polyimide, etc., but we used apricot seed husks as carbon substrates. We analyzed the effect of various factors on the properties of carbon molecular sieves prepared from a matrix of apricot seed husks with extremely low ash content of the matrix and high micropore volume to adsorb oxygen, and on this basis, we established a rational preparation process to prepare CMS for nitrogen gas separation. The properties of the carbon molecular sieves prepared under the optimum preparation conditions were 7.2mg/g oxygen equilibrium adsorption, 6.3mg/g adsorption for 1min and 32 selectivity, which were very good for nitrogen separation. The prepared carbon molecular sieve is highly selective and can be used as a very efficient adsorbent for nitrogen separation in air as well as a support for a highly efficient molecular sieve catalyst.
| Published in | Innovation (Volume 6, Issue 4) |
| DOI | 10.11648/j.innov.20250604.15 |
| Page(s) | 178-186 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
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Copyright © The Author(s), 2025. Published by Science Publishing Group |
Carbon Molecular Sieve (CMS), Equilibrium Adsorption Capacity, Separation
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APA Style
Jang, W., Kim, K., Choe, C., Kim, S. (2025). Preparation of Carbon Molecular Sieves in Reducing Atmosphere for Selective O2/N2 Separation. Innovation, 6(4), 178-186. https://doi.org/10.11648/j.innov.20250604.15
ACS Style
Jang, W.; Kim, K.; Choe, C.; Kim, S. Preparation of Carbon Molecular Sieves in Reducing Atmosphere for Selective O2/N2 Separation. Innovation. 2025, 6(4), 178-186. doi: 10.11648/j.innov.20250604.15
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Download@article{10.11648/j.innov.20250604.15,
author = {Wi-Gwon Jang and Kwang-Guk Kim and Chol-Ryong Choe and Su-Il Kim},
title = {Preparation of Carbon Molecular Sieves in Reducing Atmosphere for Selective O2/N2 Separation},
journal = {Innovation},
volume = {6},
number = {4},
pages = {178-186},
doi = {10.11648/j.innov.20250604.15},
url = {https://doi.org/10.11648/j.innov.20250604.15},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.innov.20250604.15},
abstract = {Carbon Molecular Sieve (CMS) is an ultramicroporous carbonaceous adsorbent, which is widely used in the field of gas separation, especially for air nitrogen separation, as distinguished from activated carbon due to the uniformity of micropore distribution. The separation of nitrogen from air by pressure swing adsorption (PSA method) using carbon molecular sieve in a medium and small scale nitrogen production process is superior to the conventional air cold separation method. Carbon molecular sieves can be prepared from nuts, wood, polyethylene, polyimide, etc., but we used apricot seed husks as carbon substrates. We analyzed the effect of various factors on the properties of carbon molecular sieves prepared from a matrix of apricot seed husks with extremely low ash content of the matrix and high micropore volume to adsorb oxygen, and on this basis, we established a rational preparation process to prepare CMS for nitrogen gas separation. The properties of the carbon molecular sieves prepared under the optimum preparation conditions were 7.2mg/g oxygen equilibrium adsorption, 6.3mg/g adsorption for 1min and 32 selectivity, which were very good for nitrogen separation. The prepared carbon molecular sieve is highly selective and can be used as a very efficient adsorbent for nitrogen separation in air as well as a support for a highly efficient molecular sieve catalyst.},
year = {2025}
}
TY - JOUR T1 - Preparation of Carbon Molecular Sieves in Reducing Atmosphere for Selective O2/N2 Separation AU - Wi-Gwon Jang AU - Kwang-Guk Kim AU - Chol-Ryong Choe AU - Su-Il Kim Y1 - 2025/12/11 PY - 2025 N1 - https://doi.org/10.11648/j.innov.20250604.15 DO - 10.11648/j.innov.20250604.15 T2 - Innovation JF - Innovation JO - Innovation SP - 178 EP - 186 PB - Science Publishing Group SN - 2994-7138 UR - https://doi.org/10.11648/j.innov.20250604.15 AB - Carbon Molecular Sieve (CMS) is an ultramicroporous carbonaceous adsorbent, which is widely used in the field of gas separation, especially for air nitrogen separation, as distinguished from activated carbon due to the uniformity of micropore distribution. The separation of nitrogen from air by pressure swing adsorption (PSA method) using carbon molecular sieve in a medium and small scale nitrogen production process is superior to the conventional air cold separation method. Carbon molecular sieves can be prepared from nuts, wood, polyethylene, polyimide, etc., but we used apricot seed husks as carbon substrates. We analyzed the effect of various factors on the properties of carbon molecular sieves prepared from a matrix of apricot seed husks with extremely low ash content of the matrix and high micropore volume to adsorb oxygen, and on this basis, we established a rational preparation process to prepare CMS for nitrogen gas separation. The properties of the carbon molecular sieves prepared under the optimum preparation conditions were 7.2mg/g oxygen equilibrium adsorption, 6.3mg/g adsorption for 1min and 32 selectivity, which were very good for nitrogen separation. The prepared carbon molecular sieve is highly selective and can be used as a very efficient adsorbent for nitrogen separation in air as well as a support for a highly efficient molecular sieve catalyst. VL - 6 IS - 4 ER -
Institute of Chemical Engineering, Kim Chaek University of Technology, Pyongyang, DPR Korea
Institute of Chemical Engineering, Kim Chaek University of Technology, Pyongyang, DPR Korea
Institute of Chemical Engineering, Kim Chaek University of Technology, Pyongyang, DPR Korea
Institute of Chemical Engineering, Kim Chaek University of Technology, Pyongyang, DPR Korea
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