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Microporous 3D Graphene-like Zeolite-Templated Carbons for Preferential Adsorption of Ethane

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Title
Microporous 3D Graphene-like Zeolite-Templated Carbons for Preferential Adsorption of Ethane
Author(s)
Su-Kyung Lee; Hongjun Park; Ji Woong Yoon; Kiwoong Kim; Sung June Cho; Guillaume Maurin; Ryong Ryoo; Jong-San Chang
Publication Date
2020-06
Journal
ACS Applied Materials and Interfaces, v.12, no.25, pp.28484 - 28495
Publisher
American Chemical Society
Abstract
Microporous 3D graphene-like carbons were synthesized in Faujasite (FAU)-, EMT-, and beta-zeolite templates using the recently developed Ca2+ ion-catalyzed synthesis method. The microporous carbons liberated from these large-pore zeolites (0.7-0.9 nm) retain the structural regularity of zeolite. FAU-, EMT-, and beta zeolite-templated carbons (ZTCs) with faithfully constructed pore diameters of 1.2, 1.1, and 0.9 nm, respectively, and very large Brunauer-Emmet-Teller areas (2700-3200 m2 g-1) were obtained. We have discovered that these schwarzite-like carbons exhibit preferential adsorption of ethane over ethylene at pressures in the range of 1-10 bar. The curved graphene structure, consisting of a diverse range of carbon polygons with a narrow pore size of ∼1 nm, provides abundant adsorption sites in micropores and retains its ethane selectivity at pressures up to 10 bar. After varying the oxygen content in the beta ZTC, the ethane and ethylene adsorption isotherms show that the separation ability is not significantly affected by surface oxygen groups. Based on these adsorption results, a breakthrough separation procedure using a C2H4/C2H6 gas mixture (9:1 molar ratio) is demonstrated to produce ethylene with a purity of 99.9%
URI
https://pr.ibs.re.kr/handle/8788114/8992
DOI
10.1021/acsami.0c04228
ISSN
1944-8244
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > 1. Journal Papers (저널논문)
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