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DOI:	10.1371/journal.pone.0164636
论文题名:	Scanning of Adsorption Hysteresis In Situ with Small Angle X-Ray Scattering
作者:	Athanasios Ch. Mitropoulos; Evangelos P. Favvas; Konstantinos L. Stefanopoulos; Etienne F. Vansant
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2016
发表日期:	2016-10-14
卷:	11, 期:10
语种:	英语
英文关键词:	Adsorption ; Small-angle scattering ; Isotherms ; Condensation ; Desorption ; Fractals ; Distribution curves ; Curve fitting
英文摘要:	Everett’s theorem-6 of the domain theory was examined by conducting adsorption in situ with small angle x-ray scattering (SAXS) supplemented by the contrast matching technique. The study focuses on the spectrum differences of a point to which the system arrives from different scanning paths. It is noted that according to this theorem at a common point the system has similar macroscopic properties. Furthermore it was examined the memory string of the system. We concluded that opposite to theorem-6: a) at a common point the system can reach in a finite (not an infinite) number of ways, b) a correction for the thickness of the adsorbed film prior to capillary condensation is necessary, and c) the scattering curves although at high-Q values coincide, at low-Q values are different indicating different microscopic states. That is, at a common point the system holds different metastable states sustained by hysteresis effects. These metastable states are the ones which highlight the way of a system back to a return point memory (RPM). Entering the hysteresis loop from different RPMs different histories are implanted to the paths toward the common point. Although in general the memory points refer to relaxation phenomena, they also constitute a characteristic feature of capillary condensation. Analogies of the no-passing rule and the adiabaticity assumption in the frame of adsorption hysteresis are discussed.
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0164636&type=printable
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资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/25527
Appears in Collections:	过去全球变化的重建影响、适应和脆弱性科学计划与规划气候变化与战略全球变化的国际研究计划气候减缓与适应气候变化事实与影响

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作者单位:

Hephaestus Laboratory, Department of Petroleum and Mechanical Engineering, Eastern Macedonia and Thrace Institute of Technology, Cavala, St. Lucas 654 04, Greece;Membranes and Materials for Environmental Separations Laboratory, Institute of Nanoscience and Nanotechnology, National Centre for Scientific Research “Demokritos”, Ag. Paraskevi, 153 41, Athens, Greece;Membranes and Materials for Environmental Separations Laboratory, Institute of Nanoscience and Nanotechnology, National Centre for Scientific Research “Demokritos”, Ag. Paraskevi, 153 41, Athens, Greece;Hephaestus Laboratory, Department of Petroleum and Mechanical Engineering, Eastern Macedonia and Thrace Institute of Technology, Cavala, St. Lucas 654 04, Greece;Department of Chemistry, Laboratory of Adsorption and Catalysis, University of Antwerp, Universiteitsplein 1, B2610 Wilrijk, Belgium

Recommended Citation:

Athanasios Ch. Mitropoulos,Evangelos P. Favvas,Konstantinos L. Stefanopoulos,et al. Scanning of Adsorption Hysteresis In Situ with Small Angle X-Ray Scattering[J]. PLOS ONE,2016-01-01,11(10)

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