Superacidity in sulfated metal-organic framework-808

Juncong Jiang; Felipe Gándara; Yue Biao Zhang; Kyungsu Na; Omar M. Yaghi; Walter G. Klemperer

doi:10.1021/ja507119n

Superacidity in sulfated metal-organic framework-808

Juncong Jiang
, Felipe Gándara
, Yue Biao Zhang
, Kyungsu Na
, Omar M. Yaghi^*
, Walter G. Klemperer

^*Corresponding author for this work

King Fahd University of Petroleum & Minerals

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

550 Scopus citations

Abstract

Superacids, defined as acids with a Hammett acidity function H0 ≤ -12, are useful materials, but a need exists for new, designable solid state systems. Here, we report superacidity in a sulfated metal-organic framework (MOF) obtained by treating the microcrystalline form of MOF-808 [MOF-808-P: Zr₆O₅(OH)₃- (BTC)₂(HCOO)₅(H₂O)₂, BTC = 1,3,5-benzenetricarboxylate] with aqueous sulfuric acid to generate its sulfated analogue, MOF-808-2.5SO4 [Zr₆O₅(OH)₃(BTC)₂- (SO₄)_2.5(H₂O)_2.5]. This material has a Hammett acidity function H0 ≤ -14.5 and is thus identified as a superacid, providing the first evidence for superacidity in MOFs. The superacidity is attributed to the presence of zirconiumbound sulfate groups structurally characterized using single-crystal X-ray diffraction analysis.

Original language	English
Pages (from-to)	12844-12847
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	136
Issue number	37
DOIs	https://doi.org/10.1021/ja507119n
State	Published - 26 Aug 2014

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Publisher Copyright:
© 2014 American Chemical Society.

ASJC Scopus subject areas

Catalysis
General Chemistry
Biochemistry
Colloid and Surface Chemistry

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@article{ae2f21e848744fc782e06a424a92f42c,

title = "Superacidity in sulfated metal-organic framework-808",

abstract = "Superacids, defined as acids with a Hammett acidity function H0 ≤ -12, are useful materials, but a need exists for new, designable solid state systems. Here, we report superacidity in a sulfated metal-organic framework (MOF) obtained by treating the microcrystalline form of MOF-808 [MOF-808-P: Zr6O5(OH)3- (BTC)2(HCOO)5(H2O)2, BTC = 1,3,5-benzenetricarboxylate] with aqueous sulfuric acid to generate its sulfated analogue, MOF-808-2.5SO4 [Zr6O5(OH)3(BTC)2- (SO4)2.5(H2O)2.5]. This material has a Hammett acidity function H0 ≤ -14.5 and is thus identified as a superacid, providing the first evidence for superacidity in MOFs. The superacidity is attributed to the presence of zirconiumbound sulfate groups structurally characterized using single-crystal X-ray diffraction analysis.",

author = "Juncong Jiang and Felipe G{\'a}ndara and Zhang, \{Yue Biao\} and Kyungsu Na and Yaghi, \{Omar M.\} and Klemperer, \{Walter G.\}",

note = "Publisher Copyright: {\textcopyright} 2014 American Chemical Society.",

year = "2014",

month = aug,

day = "26",

doi = "10.1021/ja507119n",

language = "English",

volume = "136",

pages = "12844--12847",

journal = "Journal of the American Chemical Society",

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T1 - Superacidity in sulfated metal-organic framework-808

AU - Jiang, Juncong

AU - Gándara, Felipe

AU - Zhang, Yue Biao

AU - Na, Kyungsu

AU - Yaghi, Omar M.

AU - Klemperer, Walter G.

PY - 2014/8/26

Y1 - 2014/8/26

N2 - Superacids, defined as acids with a Hammett acidity function H0 ≤ -12, are useful materials, but a need exists for new, designable solid state systems. Here, we report superacidity in a sulfated metal-organic framework (MOF) obtained by treating the microcrystalline form of MOF-808 [MOF-808-P: Zr6O5(OH)3- (BTC)2(HCOO)5(H2O)2, BTC = 1,3,5-benzenetricarboxylate] with aqueous sulfuric acid to generate its sulfated analogue, MOF-808-2.5SO4 [Zr6O5(OH)3(BTC)2- (SO4)2.5(H2O)2.5]. This material has a Hammett acidity function H0 ≤ -14.5 and is thus identified as a superacid, providing the first evidence for superacidity in MOFs. The superacidity is attributed to the presence of zirconiumbound sulfate groups structurally characterized using single-crystal X-ray diffraction analysis.

AB - Superacids, defined as acids with a Hammett acidity function H0 ≤ -12, are useful materials, but a need exists for new, designable solid state systems. Here, we report superacidity in a sulfated metal-organic framework (MOF) obtained by treating the microcrystalline form of MOF-808 [MOF-808-P: Zr6O5(OH)3- (BTC)2(HCOO)5(H2O)2, BTC = 1,3,5-benzenetricarboxylate] with aqueous sulfuric acid to generate its sulfated analogue, MOF-808-2.5SO4 [Zr6O5(OH)3(BTC)2- (SO4)2.5(H2O)2.5]. This material has a Hammett acidity function H0 ≤ -14.5 and is thus identified as a superacid, providing the first evidence for superacidity in MOFs. The superacidity is attributed to the presence of zirconiumbound sulfate groups structurally characterized using single-crystal X-ray diffraction analysis.

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DO - 10.1021/ja507119n

M3 - Article

AN - SCOPUS:84921529033

SN - 0002-7863

VL - 136

SP - 12844

EP - 12847

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 37

ER -

Superacidity in sulfated metal-organic framework-808

Abstract

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