caa a22 4500 477091652 CHVBK 20180405111516.0 cr unu---uuuuu 170330e19960901xx s 000 0 eng 10.1007/BF00488108 doi (NATIONALLICENCE)springer-10.1007/BF00488108 Conner Wm Dept. Chemical Engineering, University of Massachusetts, Amherst, MA, USA aut Analyses of (AD)-sorption for the estimation of pore-network dimensions and structure [Elektronische Daten] [Wm. Conner] The interpretation of pore dimensions based on physical ad-desorption analyses is central to the characterization of pore network structure. Several approaches have been proposed and are commonly employed in the analysis of physical adsorption and/or desorption to deduce the dimensions of the porous network. These approaches assume either theoretical (e.g., BET, the Halsey equation as interpreted by Pierce et al., or the more recent analyses of microporosity) or "standard” isotherms as model(s) for the sequential calculations required in estimating the pore network dimensions. Subsequent representation of the pore dimensions and the relationship between these distributions in dimension and other experimental parameters (such as catalytic activity, adsorptivity or transport); thus, depend explicitly on the model employed in the analyses. Each instrument currently available for the measurement of porous solid structure by sorption employs the same specific models for the relationship between the volume ad-desorbed and the dimensions of the porous network that is being characterized. This paper analyzes the interpretation of porous dimensions based on the sequential calculations required in the analyses. A new approach is proposed which is based on a modification to current practices reflecting Halsey's original theory for the thickness of the adsorbed layer (as a function of P/P 0). Further, the calculations of the incremental changes in the exposed surface area are discussed as they relate to pore network structure. A method is proposed to infer the differences in pore shape. Sorption data are analyzed by these new approaches, and these analyses will be compared with those approaches currently employed. Analyses based on these modified approaches provide a dramatically more consistent interpretation of the sorption data and the corresponding pore network structures. Kluwer Academic Publishers, 1996 adsorption nationallicence analysis of pore structure nationallicence estimation from sorption pore shape nationallicence from ad-de-sorption surface area nationallicence calculations from sorption nationallicence Journal of Porous Materials Springer Netherlands 2/3(1996-09-01), 191-199 1380-2224 2:3<191 1996 2 10934 https://doi.org/10.1007/BF00488108 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00488108 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Conner Wm Dept. Chemical Engineering, University of Massachusetts, Amherst, MA, USA aut NATIONALLICENCE 773 0- Journal of Porous Materials Springer Netherlands 2/3(1996-09-01), 191-199 1380-2224 2:3<191 1996 2 10934 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer