Статья

Superacidity in Sulfated Metal–Organic Framework-808

Juncong JiangDepartment of Chemistry, University of California, Berkeley and Kavli Energy NanoSciences Institute at Berkeley, Berkeley, California 94720, United StatesFelipe GándaraDepartment of Chemistry, University of California, Berkeley and Kavli Energy NanoSciences Institute at Berkeley, Berkeley, California 94720, United StatesYue‐Biao ZhangDepartment of Chemistry, University of California, Berkeley and Kavli Energy NanoSciences Institute at Berkeley, Berkeley, California 94720, United StatesKyungsu NaChemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United StatesOmar M. YaghiDepartment of Chemistry, University of California, Berkeley and Kavli Energy NanoSciences Institute at Berkeley, Berkeley, California 94720, United StatesW. G. KlempererDepartment of Chemistry, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States

2014en

ABI

Аннотация

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 zirconium-bound sulfate groups structurally characterized using single-crystal X-ray diffraction analysis.

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Идентификаторы

DOI: 10.1021/ja507119n

Цитирования и источники

Цитирований: 2Использованных источников: 0

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