Ultramicroporous carbon with extremely narrow pore distribution and very high nitrogen doping for efficient methane mixture gases upgrading

Handle URI:
http://hdl.handle.net/10754/625639
Title:
Ultramicroporous carbon with extremely narrow pore distribution and very high nitrogen doping for efficient methane mixture gases upgrading
Authors:
Yao, Kexin; Chen, Yanli; Lu, Yue; Zhao, Yunfeng ( 0000-0002-1442-992X ) ; Ding, Yi
Abstract:
It is notably challenging to fabricate heavily heteroatom-doped porous carbonaceous materials with narrow ultramicropore size distributions for highly effective mixed-gas separation. In this study, new carbon-based materials with narrow ultramicropore size (<7 Å) distributions (>95%) and high N doping contents (>10 at%) are fabricated through the pyrolysis of a perchloro-substituted porous covalent triazine-based framework (ClCTF). In particular, the sample prepared at 650 °C (ClCTF-1-650) possesses the highest ultramicropores content (98%) and large N content (12 at%) and demonstrates a very high CH and CO capacity, as well as a low N uptake under ambient conditions. The extraordinarily high CH/N and CO/N selectivities correlate with both the ideal adsorption solution theory (IAST) method and performed dynamic separation experiments (breakthrough experiments). The results reported in this study far exceed the CH/N and CO/N selectivities of previously reported carbon-based adsorbents including various nitrogen-doped ones. These results are believed to be associated with the unusually high N content, as well as the suitably narrow ultramicropore size distribution. This report introduces a new pathway to design porous absorbents with precisely controlled ultramicropores for gas separation.
KAUST Department:
Advanced Membranes and Porous Materials Research Center; Physical Sciences and Engineering (PSE) Division
Citation:
Yao KX, Chen Y, Lu Y, Zhao Y, Ding Y (2017) Ultramicroporous carbon with extremely narrow pore distribution and very high nitrogen doping for efficient methane mixture gases upgrading. Carbon 122: 258–265. Available: http://dx.doi.org/10.1016/j.carbon.2017.06.073.
Publisher:
Elsevier BV
Journal:
Carbon
Issue Date:
24-Jun-2017
DOI:
10.1016/j.carbon.2017.06.073
Type:
Article
ISSN:
0008-6223
Sponsors:
This work was supported by the Natural Science Foundation of Tianjin City (16JCYBJC17000) and the Specialized Research Fund for the Doctoral Program of Higher Education of China (20133201120004). Y.F.Z. acknowledges support from “Youth Thousand Talents Program” of Tianjin City.
Additional Links:
http://www.sciencedirect.com/science/article/pii/S0008622317306504
Appears in Collections:
Articles; Advanced Membranes and Porous Materials Research Center; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorYao, Kexinen
dc.contributor.authorChen, Yanlien
dc.contributor.authorLu, Yueen
dc.contributor.authorZhao, Yunfengen
dc.contributor.authorDing, Yien
dc.date.accessioned2017-10-03T12:49:31Z-
dc.date.available2017-10-03T12:49:31Z-
dc.date.issued2017-06-24en
dc.identifier.citationYao KX, Chen Y, Lu Y, Zhao Y, Ding Y (2017) Ultramicroporous carbon with extremely narrow pore distribution and very high nitrogen doping for efficient methane mixture gases upgrading. Carbon 122: 258–265. Available: http://dx.doi.org/10.1016/j.carbon.2017.06.073.en
dc.identifier.issn0008-6223en
dc.identifier.doi10.1016/j.carbon.2017.06.073en
dc.identifier.urihttp://hdl.handle.net/10754/625639-
dc.description.abstractIt is notably challenging to fabricate heavily heteroatom-doped porous carbonaceous materials with narrow ultramicropore size distributions for highly effective mixed-gas separation. In this study, new carbon-based materials with narrow ultramicropore size (<7 Å) distributions (>95%) and high N doping contents (>10 at%) are fabricated through the pyrolysis of a perchloro-substituted porous covalent triazine-based framework (ClCTF). In particular, the sample prepared at 650 °C (ClCTF-1-650) possesses the highest ultramicropores content (98%) and large N content (12 at%) and demonstrates a very high CH and CO capacity, as well as a low N uptake under ambient conditions. The extraordinarily high CH/N and CO/N selectivities correlate with both the ideal adsorption solution theory (IAST) method and performed dynamic separation experiments (breakthrough experiments). The results reported in this study far exceed the CH/N and CO/N selectivities of previously reported carbon-based adsorbents including various nitrogen-doped ones. These results are believed to be associated with the unusually high N content, as well as the suitably narrow ultramicropore size distribution. This report introduces a new pathway to design porous absorbents with precisely controlled ultramicropores for gas separation.en
dc.description.sponsorshipThis work was supported by the Natural Science Foundation of Tianjin City (16JCYBJC17000) and the Specialized Research Fund for the Doctoral Program of Higher Education of China (20133201120004). Y.F.Z. acknowledges support from “Youth Thousand Talents Program” of Tianjin City.en
dc.publisherElsevier BVen
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0008622317306504en
dc.titleUltramicroporous carbon with extremely narrow pore distribution and very high nitrogen doping for efficient methane mixture gases upgradingen
dc.typeArticleen
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Centeren
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalCarbonen
dc.contributor.institutionTianjin Key Laboratory of Advanced Functional Porous Materials, Institute for New Energy Materials and Low-Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384, , Chinaen
kaust.authorYao, Kexinen
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