Details
| Original language | English |
|---|---|
| Pages (from-to) | 16849-16853 |
| Number of pages | 5 |
| Journal | Journal of Materials Chemistry A |
| Volume | 6 |
| Issue number | 35 |
| Publication status | Published - 21 Aug 2018 |
Abstract
Covalent organic frameworks (COFs) are promising for constructing gas-separation membranes due to their versatile architectures, customizable functionalities and chemical stabilities. However, synthesis of continuous COF membranes still remains a challenge and rather underexplored. Herein, we present a two-dimensional (2D) azine-linked ACOF-1 membrane synthesized on a porous support by a solvothermal approach. The ACOF-1 membrane with a thickness of 8 μm shows a high selectivity of 86.3 in CO2/CH4 mixed gas separation with a favorable CO2 permeance of about 9.9 × 10-9 mol m-2 s-1 Pa-1, and the overall performance exceeds the Robeson upper bound (2008). This surprising molecular sieving effect is attributed to an effective narrowing of the pore diameter (0.94 nm) owing to crystal intergrowth. A long-term test of gas permeation demonstrates the outstanding stability of the ACOF-1 membrane. These properties recommend the ACOF-1 membrane for CO2 capture and other gas separations.
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
- Energy(all)
- Renewable Energy, Sustainability and the Environment
- Materials Science(all)
- General Materials Science
Sustainable Development Goals
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In: Journal of Materials Chemistry A, Vol. 6, No. 35, 21.08.2018, p. 16849-16853.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - An azine-linked covalent organic framework ACOF-1 membrane for highly selective CO2/CH4 separation
AU - Fan, Hongwei
AU - Mundstock, Alexander
AU - Gu, Jiahui
AU - Meng, Hong
AU - Caro, Jürgen
PY - 2018/8/21
Y1 - 2018/8/21
N2 - Covalent organic frameworks (COFs) are promising for constructing gas-separation membranes due to their versatile architectures, customizable functionalities and chemical stabilities. However, synthesis of continuous COF membranes still remains a challenge and rather underexplored. Herein, we present a two-dimensional (2D) azine-linked ACOF-1 membrane synthesized on a porous support by a solvothermal approach. The ACOF-1 membrane with a thickness of 8 μm shows a high selectivity of 86.3 in CO2/CH4 mixed gas separation with a favorable CO2 permeance of about 9.9 × 10-9 mol m-2 s-1 Pa-1, and the overall performance exceeds the Robeson upper bound (2008). This surprising molecular sieving effect is attributed to an effective narrowing of the pore diameter (0.94 nm) owing to crystal intergrowth. A long-term test of gas permeation demonstrates the outstanding stability of the ACOF-1 membrane. These properties recommend the ACOF-1 membrane for CO2 capture and other gas separations.
AB - Covalent organic frameworks (COFs) are promising for constructing gas-separation membranes due to their versatile architectures, customizable functionalities and chemical stabilities. However, synthesis of continuous COF membranes still remains a challenge and rather underexplored. Herein, we present a two-dimensional (2D) azine-linked ACOF-1 membrane synthesized on a porous support by a solvothermal approach. The ACOF-1 membrane with a thickness of 8 μm shows a high selectivity of 86.3 in CO2/CH4 mixed gas separation with a favorable CO2 permeance of about 9.9 × 10-9 mol m-2 s-1 Pa-1, and the overall performance exceeds the Robeson upper bound (2008). This surprising molecular sieving effect is attributed to an effective narrowing of the pore diameter (0.94 nm) owing to crystal intergrowth. A long-term test of gas permeation demonstrates the outstanding stability of the ACOF-1 membrane. These properties recommend the ACOF-1 membrane for CO2 capture and other gas separations.
UR - http://www.scopus.com/inward/record.url?scp=85053501209&partnerID=8YFLogxK
U2 - 10.1039/c8ta05641b
DO - 10.1039/c8ta05641b
M3 - Article
AN - SCOPUS:85053501209
VL - 6
SP - 16849
EP - 16853
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
SN - 2050-7488
IS - 35
ER -