화학공학소재연구정보센터
Chemical Engineering Science, Vol.101, 1-4, 2013
In situ Raman spectra of hydrogen in large cages of hydrogen plus tetrahydrofuran mixed hydrates
Large cage occupancy of hydrogen (H-2) in the H-2+Letrahydrofuran (THF) hydrates has been ever reported only in the ex situ spectroscopic measurements with the quenched hydrate sample. In the present study, to verify the proof-of-concept for the large cage occupancy of H-2 competitive with THF, in situ Raman spectra of H-2 in the H-2+THF mixed hydrates were detected at 74.3 MPa and 265 K without the quenching procedure. The Raman spectra reveal that H-2 molecules occupy a part of large cages of the H-2+THF mixed hydrates at a thermodynamically unstable region of simple H-2 hydrate. (C) 2013 Elsevier Ltd. All rights reserved.