Superacidity in Sulfated Metal–Organic Framework-808
University of California, Berkeley · Lawrence Berkeley National Laboratory · +3 more institutions
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 zirconium-bound sulfate groups structurally…
Citation impact
- FWCI
- 9.46
- Percentile
- 100%
- References
- 67
Authors
6- JJJuncong JiangCorresponding
University of California, Berkeley, Lawrence Berkeley National Laboratory, Kavli Energy NanoScience Institute
- FGFelipe Gándara
Kavli Energy NanoScience Institute, University of California, Berkeley, Lawrence Berkeley National Laboratory
- YZYue‐Biao Zhang
University of California, Berkeley, Lawrence Berkeley National Laboratory, Kavli Energy NanoScience Institute
- KNKyungsu Na
Lawrence Berkeley National Laboratory, University of California, Berkeley, Kavli Energy NanoScience Institute
- OMOmar M. Yaghi
Kavli Energy NanoScience Institute, King Fahd University of Petroleum and Minerals, University of California, Berkeley, Lawrence Berkeley National Laboratory
Topics & keywords
- Chemistry
- Superacid
- Sulfation
- Sulfuric acid
- Microcrystalline
- Zirconium
- Metal-organic framework
- Sulfate