Controlling the structure of nitrogen-doped zeolite-templated carbon for CO2 capture based on the synthesis conditions

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F24%3A00597138" target="_blank" >RIV/61388955:_____/24:00597138 - isvavai.cz</a>

Alternative codes found

RIV/67985891:_____/24:00597138 RIV/44555601:13440/24:43898555 RIV/00216275:25310/24:39921982

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S1387181124003081?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1387181124003081?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.micromeso.2024.113286" target="_blank" >10.1016/j.micromeso.2024.113286</a>

Result language

angličtina

Original language name

Controlling the structure of nitrogen-doped zeolite-templated carbon for CO2 capture based on the synthesis conditions

Original language description

The surface chemistry and the textural properties of nitrogen-doped zeolite-templated carbon materials (N-ZTC) are decisive for their functionality in CO2 capture. This study analyses how the synthesis conditions affect the structure, formation of N-containing functional groups, thermal stability and CO2 capture of N-ZTC in comparison with nitrogen-free ZTC. Faujasite as a hard template and chemical vapour depositions (CVD) with propene and acetonitrile were used for the synthesis of ZTC and N-ZTC, respectively. XRD, SEM, N2 and CO2 sorption, XPS and TG/DSC analyses showed that the structural ordering and microporous volume in N-ZTC increases with increasing synthesis temperature. Conversely, at higher temperatures, the content of basic pyridinic groups in N-ZTC decreases in favour of stable graphitic nitrogen. The Lewis acid−base interaction of CO2 with the pyridinic groups provides the highest adsorption heats, the highest affinity for CO2 compared to N2 and enhances CO2/N2 selectivity (CO2/N2 selectivities of 127, 95, 89, and 66 for N-ZTC750°C, N-ZTC800°C, N-ZTC850°C and ZTC, respectively). The maximum adsorption capacity was achieved for N-ZTC800°C still yielding a high content of basic groups and a larger micropore volume compared to N-ZTC750°C. The decisive factor for the selectivity is thus the presence of basic centers attainable in N-ZTC at a lower synthesis temperature. The maximum adsorption capacity is associated with a large microporous volume and basic centers in N-ZTC synthesized at medium temperatures. The energy of CO2 adsorption by Lewis acid−base interactions and well-developed micropores are decisive for high selectivity and large adsorption capacity for efficient CO2 capture using N-ZTC materials.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10403 - Physical chemistry

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Microporous and Mesoporous Materials

ISSN

1387-1811

e-ISSN

1873-3093

Volume of the periodical

379

Issue of the periodical within the volume

JUL 2024

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

12

Pages from-to

113286

UT code for WoS article

001294574600001

EID of the result in the Scopus database

2-s2.0-85200853573