Amine-modified Mg-MOF-74/CPO-27-Mg membrane with enhanced H2/CO2 separation

Nanyi Wang; Alexander Mundstock; Yi Liu; Aisheng Huang; Jürgen Caro

doi:10.1016/j.ces.2014.10.037

Amine-modified Mg-MOF-74/CPO-27-Mg membrane with enhanced H₂/CO₂ separation

Nanyi Wang
, Alexander Mundstock
, Yi Liu
, Aisheng Huang^*
, Jürgen Caro

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

184 Scopus citations

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.

Original language	English
Pages (from-to)	27-36
Number of pages	10
Journal	Chemical Engineering Science
Volume	124
DOIs	https://doi.org/10.1016/j.ces.2014.10.037
State	Published - 3 Mar 2015
Externally published	Yes

Keywords

Amine-modification
Gas separation
Metal-organic framework
Mg-MOF-74 membrane

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10.1016/j.ces.2014.10.037

Cite this

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title = "Amine-modified Mg-MOF-74/CPO-27-Mg membrane with enhanced H2/CO2 separation",

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",

author = "Nanyi Wang and Alexander Mundstock and Yi Liu and Aisheng Huang and J{\"u}rgen Caro",

note = "Publisher Copyright: {\textcopyright} 2014 Elsevier Ltd.",

year = "2015",

month = mar,

day = "3",

doi = "10.1016/j.ces.2014.10.037",

language = "英语",

volume = "124",

pages = "27--36",

journal = "Chemical Engineering Science",

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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

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 - https://www.scopus.com/pages/publications/84923935157

U2 - 10.1016/j.ces.2014.10.037

DO - 10.1016/j.ces.2014.10.037

M3 - 文章

AN - SCOPUS:84923935157

SN - 0009-2509

VL - 124

SP - 27

EP - 36

JO - Chemical Engineering Science

JF - Chemical Engineering Science

ER -

Amine-modified Mg-MOF-74/CPO-27-Mg membrane with enhanced H₂/CO₂ separation

Abstract

Keywords

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