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Title: CO2/CH4, CH4/H2 and CO2/CH4/H2 Separations at High Pressures Using Mg2(dobdc)

Abstract

High-pressure separations of binary and ternary mixtures of CO₂, CH₄, and H₂ are relevant to carbon dioxide capture as well as hydrogen and natural gas purification. Metal–organic frameworks represent a class of porous materials that could be used to accomplish these separations, and Mg₂(dobdc) (dobdc{sup 4-} = 1,4-dioxido-2,5-benzenedicarboxylate), also sometimes referred to as Mg–MOF-74 or CPO-27–Mg, is an especially lightweight metal–organic framework with a high concentration of coordinatively-unsaturated metal sites decorating its interior surfaces. High pressure CH₄ adsorption isotherms presented here, together with CO₂ and H₂ adsorption behavior, are analyzed using the Ideal Adsorbed Solution Theory to model CO₂/CH₄, CH₄/H₂, and CO₂/CH₄/H₂ mixture separations using Mg₂(dobdc). The selectivities, working capacities and breakthrough performances for these three mixtures are reported, and Mg₂(dobdc) is shown to outperform zeolite 13X in each scenario.

Authors:
 [1];  [1];  [1]
  1. Univ. of California, Berkeley, CA (United States)
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Center for Gas Separations Relevant to Clean Energy Technologies (CGS)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1065799
DOE Contract Number:  
SC0001015
Resource Type:
Journal Article
Journal Name:
Microporous and Mesoporous Materials
Additional Journal Information:
Journal Volume: 151; Related Information: CGS partners with University of California, Berkeley; University of California, Davis; Lawrence Berkeley National Laboratory; University of Minnesota; National Energy Technology Laboratory; Texas A&M University; Journal ID: ISSN 1387-1811
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; membrane, carbon capture, materials and chemistry by design, synthesis (novel materials), synthesis (self-assembly), synthesis (scalable processing)

Citation Formats

Herm, Zoey R, Krishna, Rajamani, and Long, Jeffrey R. CO2/CH4, CH4/H2 and CO2/CH4/H2 Separations at High Pressures Using Mg2(dobdc). United States: N. p., Web. doi:10.1016/j.micromeso.2011.09.004.
Herm, Zoey R, Krishna, Rajamani, & Long, Jeffrey R. CO2/CH4, CH4/H2 and CO2/CH4/H2 Separations at High Pressures Using Mg2(dobdc). United States. https://doi.org/10.1016/j.micromeso.2011.09.004
Herm, Zoey R, Krishna, Rajamani, and Long, Jeffrey R. . "CO2/CH4, CH4/H2 and CO2/CH4/H2 Separations at High Pressures Using Mg2(dobdc)". United States. https://doi.org/10.1016/j.micromeso.2011.09.004.
@article{osti_1065799,
title = {CO2/CH4, CH4/H2 and CO2/CH4/H2 Separations at High Pressures Using Mg2(dobdc)},
author = {Herm, Zoey R and Krishna, Rajamani and Long, Jeffrey R},
abstractNote = {High-pressure separations of binary and ternary mixtures of CO₂, CH₄, and H₂ are relevant to carbon dioxide capture as well as hydrogen and natural gas purification. Metal–organic frameworks represent a class of porous materials that could be used to accomplish these separations, and Mg₂(dobdc) (dobdc{sup 4-} = 1,4-dioxido-2,5-benzenedicarboxylate), also sometimes referred to as Mg–MOF-74 or CPO-27–Mg, is an especially lightweight metal–organic framework with a high concentration of coordinatively-unsaturated metal sites decorating its interior surfaces. High pressure CH₄ adsorption isotherms presented here, together with CO₂ and H₂ adsorption behavior, are analyzed using the Ideal Adsorbed Solution Theory to model CO₂/CH₄, CH₄/H₂, and CO₂/CH₄/H₂ mixture separations using Mg₂(dobdc). The selectivities, working capacities and breakthrough performances for these three mixtures are reported, and Mg₂(dobdc) is shown to outperform zeolite 13X in each scenario.},
doi = {10.1016/j.micromeso.2011.09.004},
url = {https://www.osti.gov/biblio/1065799}, journal = {Microporous and Mesoporous Materials},
issn = {1387-1811},
number = ,
volume = 151,
place = {United States},
year = {},
month = {}
}