Impact of Preparation and Handling on the Hydrogen Storage Properties of Zn 4 O(1,4-benzenedicarboxylate) 3 (MOF-5)
General Motors (United States) · University of California, Berkeley · +3 more institutions
Abstract
The prototypical metal-organic framework Zn4O(BDC)3 (MOF-5, BDC2- = 1,4-benzenedicarboxylate) decomposes gradually in humid air to form a nonporous solid. Recognizing this, improved procedures for its synthesis and handling were developed, leading to significant increases in N2 and H2 gas adsorption capacities. Nitrogen adsorption isotherms measured at 77 K reveal an enhanced maximum N2 uptake of 44.5 mmol/g and a BET surface area of 3800 m2/g, compared to the 35.8 mmol/g and 3100 m2/g obtained for a sample prepared using previous methods. High-pressure H2 adsorption isotherms show improvements from 5.0 to 7.1 excess wt % at 77 K and 40 bar. The total H2 uptake was further observed to climb to 11.5 wt % at 170…
Citation impact
- FWCI
- 47.47
- Percentile
- 100%
- References
- 19
Authors
4- SSSteven S. KayeCorresponding
General Motors (United States), University of California, Berkeley, Purdue University West Lafayette, California NanoSystems Institute, University of California, Los Angeles
- ADAnne Dailly
General Motors (United States), California NanoSystems Institute, University of California, Berkeley, University of California, Los Angeles, Purdue University West Lafayette
- OMOmar M. Yaghi
California NanoSystems Institute, General Motors (United States), Purdue University West Lafayette, University of California, Los Angeles, University of California, Berkeley
- JRJeffrey R. Long
General Motors (United States), University of California, Berkeley, Purdue University West Lafayette, California NanoSystems Institute, University of California, Los Angeles
Topics & keywords
- Chemistry
- Gravimetric analysis
- Hydrogen storage
- Adsorption
- Bar (unit)
- BET theory
- Desorption
- Nitrogen