The study of Xe adsorption behavior in meso-size pores of carbon black materials using laser-polarized 129Xe NMR spectroscopy.
The meso size pores of carbon black materials with Pt critically affect catalysts which play an important role for fuel cells of electric vehicles. Time-consuming BET methods are usually used to measure the physisorption enthalpy which determines the characteristics of catalysts. The laser polarized method enhances 129Xe polarization by 4 orders of magnitude, overcoming a low sensitivity, making this measurement technique faster than conventional experiments. In this paper, we first demonstrate Laser-Polarized 129Xe NMR Spectroscopy for studying carbon black materials with Pt of fuel cells of electric vehicles in order to determine the physisorption enthalpy. At the same time, T1 experiments using Laser-Polarized 129Xe will be discussed in order to clarify the surface condition and adsorption behavior.
Saito
Koji
K
Nippon Steel Corporation, Advanced Technology Research Laboratory, Osaka University, 20-1 Shintomi, Futtsu City, 293-8511, Japan. saito@re.nsc.co.jp
Kimura
Atsuomi
A
Fujiwara
Hideaki
H
D000327:Adsorption; D002244:Carbon / Q000737:chemistry*; D007834:Lasers; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D014979:Xenon Isotopes
D014979:Xenon Isotopes; D002244:Carbon