Superacidity in Sulfated Metal-Organic Framework-808

被引：492

作者：

Jiang, Juncong ^{[1
,2
,3
]}

Gandara, Felipe ^{[1
,2
,3
]}

Zhang, Yue-Biao ^{[1
,2
,3
]}

Na, Kyungsu ^{[1
,2
,4
]}

Yaghi, Omar M. ^{[1
,2
,3
,5
]}

Klemperer, Walter G. ^{[6
]}

机构：

[1] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

[2] Kavli Energy NanoSci Inst Berkeley, Berkeley, CA 94720 USA

[3] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA

[4] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA

[5] King Fahd Univ Petr & Minerals, Dhahran 34464, Saudi Arabia

[6] Univ Illinois, Dept Chem, Urbana, IL 61801 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2014年 / 136卷 / 37期

基金：

新加坡国家研究基金会;

关键词：

SOLID-ACID CATALYSTS; ALPHA-PINENE; CHROMIUM(III) CARBOXYLATE; PROTON CONDUCTIVITY; ZIRCONIA CATALYSTS; FUNCTIONAL-GROUPS; RECENT PROGRESS; SITES; WATER; ISOMERIZATION;

D O I：

10.1021/ja507119n

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Superacids, defined as acids with a Hammett acidity function H-0 <=-12, are useful materials, but a need exists for new, designable solid state systems. Here, we report superacidity in a sulfated metal-organic framework (MOP) 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-808-2.5SO(4) [Zr6O5(OH)(3)(BTC)(2)-(SO4)(2.5)(H2O)(2.5)]. This material has a Hammett acidity function H-0 <= -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 zirconium-bound sulfate groups structurally characterized using single-crystal X-ray diffraction analysis.

引用

页码：12844 / 12847

页数：4

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