Effect of purification conditions on gas storage and separations in a chromium-based metal-organic framework MIL-101

Seung Joon Lee, Ji Woong Yoon, You Kyong Seo, Min Bum Kim, Su Kyung Lee, U. Hwang Lee, Young Kyu Hwang, Youn-Sang Bae, Jong San Chang

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The effect of purification condition of a chromium terephthalate MIL-101 on gas storage (H 2 , CO 2 , and C 2 H 2 ) and C2 hydrocarbon separations was investigated for MIL-101a, MIL-101b, and MIL-101c, which were obtained by three-step sequential purification using hot water/ethanol and aqueous NH 4 F solution treatments. MIL-101c was the best in terms of gas storage capacities among the three samples possibly due to the removal of free and coordinated terephthalic acids. Remarkably, MIL-101c exhibits among the highest total hydrogen uptake at 50 bar and 77 K (9.9 wt%) and shows considerably large deliverable capacity between 1.5 and 50 bar (7.6 wt%). Moreover, MIL-101c shows among the highest C 2 H 2 storage capacity (6.4 mmol g -1 ) and deliverable capacity (4.3 mmol g -1 ) at 1 bar and 313 K. For C 2 H 2 /C 2 H 6 , C 2 H 2 /C 2 H 4 , and C 2 H 4 /C 2 H 6 separations, MIL-101c exhibits higher adsorption capacities, working capacities and adsorption figure of merit (AFM) values while MIL-101b shows higher selectivities and sorbent selection parameters. These results clearly show that a proper purification of MIL-101 is important for gas storage and gas separations.

Original languageEnglish
Pages (from-to)160-165
Number of pages6
JournalMicroporous and Mesoporous Materials
Volume193
DOIs
Publication statusPublished - 2014 Jul 15

Fingerprint

Chromium
purification
Purification
chromium
Metals
gases
metals
Adsorption
Sorbents
Ethanol
Hydrocarbons
terephthalate
Hydrogen
adsorption
Acids
sorbents
Gases
figure of merit
MIL-101
N(1)-methyl-2-lysergic acid diethylamide

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

Cite this

Lee, Seung Joon ; Yoon, Ji Woong ; Seo, You Kyong ; Kim, Min Bum ; Lee, Su Kyung ; Lee, U. Hwang ; Hwang, Young Kyu ; Bae, Youn-Sang ; Chang, Jong San. / Effect of purification conditions on gas storage and separations in a chromium-based metal-organic framework MIL-101. In: Microporous and Mesoporous Materials. 2014 ; Vol. 193. pp. 160-165.
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Effect of purification conditions on gas storage and separations in a chromium-based metal-organic framework MIL-101. / Lee, Seung Joon; Yoon, Ji Woong; Seo, You Kyong; Kim, Min Bum; Lee, Su Kyung; Lee, U. Hwang; Hwang, Young Kyu; Bae, Youn-Sang; Chang, Jong San.

In: Microporous and Mesoporous Materials, Vol. 193, 15.07.2014, p. 160-165.

Research output: Contribution to journalArticle

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AU - Lee, Seung Joon

AU - Yoon, Ji Woong

AU - Seo, You Kyong

AU - Kim, Min Bum

AU - Lee, Su Kyung

AU - Lee, U. Hwang

AU - Hwang, Young Kyu

AU - Bae, Youn-Sang

AU - Chang, Jong San

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N2 - The effect of purification condition of a chromium terephthalate MIL-101 on gas storage (H 2 , CO 2 , and C 2 H 2 ) and C2 hydrocarbon separations was investigated for MIL-101a, MIL-101b, and MIL-101c, which were obtained by three-step sequential purification using hot water/ethanol and aqueous NH 4 F solution treatments. MIL-101c was the best in terms of gas storage capacities among the three samples possibly due to the removal of free and coordinated terephthalic acids. Remarkably, MIL-101c exhibits among the highest total hydrogen uptake at 50 bar and 77 K (9.9 wt%) and shows considerably large deliverable capacity between 1.5 and 50 bar (7.6 wt%). Moreover, MIL-101c shows among the highest C 2 H 2 storage capacity (6.4 mmol g -1 ) and deliverable capacity (4.3 mmol g -1 ) at 1 bar and 313 K. For C 2 H 2 /C 2 H 6 , C 2 H 2 /C 2 H 4 , and C 2 H 4 /C 2 H 6 separations, MIL-101c exhibits higher adsorption capacities, working capacities and adsorption figure of merit (AFM) values while MIL-101b shows higher selectivities and sorbent selection parameters. These results clearly show that a proper purification of MIL-101 is important for gas storage and gas separations.

AB - The effect of purification condition of a chromium terephthalate MIL-101 on gas storage (H 2 , CO 2 , and C 2 H 2 ) and C2 hydrocarbon separations was investigated for MIL-101a, MIL-101b, and MIL-101c, which were obtained by three-step sequential purification using hot water/ethanol and aqueous NH 4 F solution treatments. MIL-101c was the best in terms of gas storage capacities among the three samples possibly due to the removal of free and coordinated terephthalic acids. Remarkably, MIL-101c exhibits among the highest total hydrogen uptake at 50 bar and 77 K (9.9 wt%) and shows considerably large deliverable capacity between 1.5 and 50 bar (7.6 wt%). Moreover, MIL-101c shows among the highest C 2 H 2 storage capacity (6.4 mmol g -1 ) and deliverable capacity (4.3 mmol g -1 ) at 1 bar and 313 K. For C 2 H 2 /C 2 H 6 , C 2 H 2 /C 2 H 4 , and C 2 H 4 /C 2 H 6 separations, MIL-101c exhibits higher adsorption capacities, working capacities and adsorption figure of merit (AFM) values while MIL-101b shows higher selectivities and sorbent selection parameters. These results clearly show that a proper purification of MIL-101 is important for gas storage and gas separations.

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