TY - JOUR
T1 - Confined state of alcohol in carbon micropores as revealed by in situ X-ray diffraction
AU - Ohkubo, T.
AU - Iiyama, T.
AU - Suzuki, T.
AU - Kaneko, K.
N1 - Funding Information:
This work was funded by the Grant-in-Aid for Scientific Research on Priority Areas No. 288 “Carbon Alloys” from Japanese Government and Japan Interaction in Science and Technology Forum.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2000
Y1 - 2000
N2 - The X-ray diffraction (XRD) of ethanol and methanol molecules confined in carbon micropores was measured at 303 K. The effect of the pore width in the range of 0.7-1.1 nm on the molecular assembly structure of ethanol and methanol in the micropores was examined. The XRD patterns were analyzed by use of the electron radial distribution function (ERDF) analysis. The density of alcohol molecular assemblies in micropores was determined by using ethanol or methanol adsorption at 303 K and nitrogen adsorption at 77 K. The density of alcohol molecular assemblies in pores of 1.1 nm was close to the solid density of alcohol, whereas that in micropores of 0.7 nm was almost equal to the bulk liquid density. However the amplitudes of the ERDFs of alcohol in both micropores were much greater than that of bulk liquid, indicating that the serious confinement in micropores gives rise to their solid-like ordering even at 303 K.
AB - The X-ray diffraction (XRD) of ethanol and methanol molecules confined in carbon micropores was measured at 303 K. The effect of the pore width in the range of 0.7-1.1 nm on the molecular assembly structure of ethanol and methanol in the micropores was examined. The XRD patterns were analyzed by use of the electron radial distribution function (ERDF) analysis. The density of alcohol molecular assemblies in micropores was determined by using ethanol or methanol adsorption at 303 K and nitrogen adsorption at 77 K. The density of alcohol molecular assemblies in pores of 1.1 nm was close to the solid density of alcohol, whereas that in micropores of 0.7 nm was almost equal to the bulk liquid density. However the amplitudes of the ERDFs of alcohol in both micropores were much greater than that of bulk liquid, indicating that the serious confinement in micropores gives rise to their solid-like ordering even at 303 K.
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U2 - 10.1016/s0167-2991(00)80046-4
DO - 10.1016/s0167-2991(00)80046-4
M3 - Article
AN - SCOPUS:0034353807
SN - 0167-2991
VL - 128
SP - 411
EP - 419
JO - Studies in Surface Science and Catalysis
JF - Studies in Surface Science and Catalysis
ER -