Details
| Original language | English |
|---|---|
| Pages (from-to) | 27-36 |
| Number of pages | 10 |
| Journal | Chemical engineering science |
| Volume | 124 |
| Early online date | 27 Oct 2014 |
| Publication status | Published - 3 Mar 2015 |
Abstract
Mg-MOF-74 has attracted intense attention due to its high CO2 uptake ability. In this work, a new strategy by using magnesium oxide as seeds was developed to synthesize a dense, defect-free Mg-MOF-74 membrane with hydrogen-selectivity. The mixed gas separation factor of H2/CO2 mixture could be improved by the post-modification of the Mg-MOF-74 membrane with ethylenediamine, since the modification with amine groups enhanced the strong adsorption of CO2 molecules, which reduces the permeance of CO2. The separation factors for both as-synthesized and amino-functionalized Mg-MOF-74 membranes reduce gradually with increasing temperature. After amination of the open Mg sites, the separation performance of the Mg-MOF-74 membrane was remarkably enhanced, and the H2/CO2 selectivity increased from 10.5 to 28 at room temperature.
Keywords
- Amine-modification, Gas separation, Metal-organic framework, Mg-MOF-74 membrane
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
- Chemical Engineering(all)
- General Chemical Engineering
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: Chemical engineering science, Vol. 124, 03.03.2015, p. 27-36.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Amine-modified Mg-MOF-74/CPO-27-Mg membrane with enhanced H2/CO2 separation
AU - Wang, Nanyi
AU - Mundstock, Alexander
AU - Liu, Yi
AU - Huang, Aisheng
AU - Caro, Jürgen
N1 - Funding Information: Financial support by EU CARENA ( FP7-NMP-2010-LARGE-4, Nr. 263007 ), and Chinese Academy of Science Visiting Professorship for Senior International Scientists (Grant No. 2013T1G0047 ) is acknowledged.
PY - 2015/3/3
Y1 - 2015/3/3
N2 - Mg-MOF-74 has attracted intense attention due to its high CO2 uptake ability. In this work, a new strategy by using magnesium oxide as seeds was developed to synthesize a dense, defect-free Mg-MOF-74 membrane with hydrogen-selectivity. The mixed gas separation factor of H2/CO2 mixture could be improved by the post-modification of the Mg-MOF-74 membrane with ethylenediamine, since the modification with amine groups enhanced the strong adsorption of CO2 molecules, which reduces the permeance of CO2. The separation factors for both as-synthesized and amino-functionalized Mg-MOF-74 membranes reduce gradually with increasing temperature. After amination of the open Mg sites, the separation performance of the Mg-MOF-74 membrane was remarkably enhanced, and the H2/CO2 selectivity increased from 10.5 to 28 at room temperature.
AB - Mg-MOF-74 has attracted intense attention due to its high CO2 uptake ability. In this work, a new strategy by using magnesium oxide as seeds was developed to synthesize a dense, defect-free Mg-MOF-74 membrane with hydrogen-selectivity. The mixed gas separation factor of H2/CO2 mixture could be improved by the post-modification of the Mg-MOF-74 membrane with ethylenediamine, since the modification with amine groups enhanced the strong adsorption of CO2 molecules, which reduces the permeance of CO2. The separation factors for both as-synthesized and amino-functionalized Mg-MOF-74 membranes reduce gradually with increasing temperature. After amination of the open Mg sites, the separation performance of the Mg-MOF-74 membrane was remarkably enhanced, and the H2/CO2 selectivity increased from 10.5 to 28 at room temperature.
KW - Amine-modification
KW - Gas separation
KW - Metal-organic framework
KW - Mg-MOF-74 membrane
UR - http://www.scopus.com/inward/record.url?scp=84923935157&partnerID=8YFLogxK
U2 - 10.1016/j.ces.2014.10.037
DO - 10.1016/j.ces.2014.10.037
M3 - Article
AN - SCOPUS:84923935157
VL - 124
SP - 27
EP - 36
JO - Chemical engineering science
JF - Chemical engineering science
SN - 0009-2509
ER -