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
收藏
页码：12844 / 12847
页数：4
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