Characterizing Hydrogen Storage Media: Understanding the Interior Pore Structure of a Cu3BTC2 Metal-Organic Framework Infiltrated with NaAlH4
- Resource Type
- Conference
- Authors
- Source
- Conference: Presented at: Experimental Nuclear Magnetic Resonance, Daytona Beach, FL, United States, Apr 18 - Apr 23, 2010
- Subject
- 08 HYDROGEN
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
25 ENERGY STORAGE ADSORPTION
DESORPTION
HYDROGEN
HYDROGEN STORAGE
NUCLEAR MAGNETIC RESONANCE
PORE STRUCTURE
RELAXATION
SODIUM
SODIUM IONS
- Language
- English
Preliminary results support the nano-confinement of sodium alanate within the pores of a Cu{sub 3}BTC{sub 2} MOF substrate. Increased {sup 1}H and {sup 27}Al NMR T{sub 1} relaxation rates indicate a close proximity of infiltrated sodium alante to the paramagnetic Cu{sup 2+} ions on the BTC paddlewheel units. This is in support of the theory that an interaction due to the electronegative framework with the sodium alanate facilitates thermodynamically-favorable hydrogen adsorption and desorption. Further studies can elucidate the local electronic environment of the sodium ions, further supporting a charge-transfer mechanism as the driving force for thermodynamically-favorable hydrogen adsorption and desorption.