Comparative characterization study of microporous carbons by HRTEM image analysis and gas adsorption.

Comparative characterization study of microporous carbons by HRTEM image analysis and gas adsorption. Research Abstract Details 

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Comparative characterization study of microporous carbons by HRTEM image analysis and gas adsorption. Abstract Text:

D Lozano-Castello,D Cazorla-Amoros,A Linares-Solano,K Oshida,T Miyazaki,Y J Kim,T Hayashi,M Endo,

The present work presents a useful comparison of micropore size distributions (MPSDs) obtained from gas adsorption and image analysis of high-resolution transmission electron micrographs. It is shown that the MPSD obtained for a chemical activated carbon is concordant with that obtained from CO2 adsorption. In addition, this technique has allowed us to obtain the MPSD of a carbon molecular sieve (CMS) prepared in our laboratory by a copyrolysis process, which could only be characterized by CO2 adsorption at 273 K (not by N2 adsorption at 77 K due to diffusional problems). The MPSD obtained by high-resolution transmission electron microscopy (HRTEM) for the CMS is wider than that obtained by CO2 adsorption, suggesting that HRTEM is detecting the closed porosity existing in this sample, which is not accessible to gas adsorption. The existence of closed porosity in the CMS is explained considering the preparation method used. Thus, HRTEM combined with image analysis seems to be useful for structural analysis of narrow micropores including closed porosity.

Comparative characterization study of microporous carbons by HRTEM image analysis and gas adsorption. Publishing Authors By Initials

D Lozano-Castello,D Cazorla-Amoros,A Linares-Solano,K Oshida,T Miyazaki,YJ Kim,T Hayashi,M Endo,

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Comparative characterization study of microporous carbons by HRTEM image analysis and gas adsorption. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: The journal of physical chemistry. B

VOLUME: 109

Page Numbers: 15032-6

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ISSN: 1520-6106

DAY: 11

MONTH: Aug

YEAR: 2005

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LANGUAGE: eng

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Grant and Affiliation Information for Comparative characterization study of microporous carbons by HRTEM image analysis and gas adsorption.

AFFILIATION: Departamento de Quimica Inorganica, Universidad de Alicante, E-03080, Alicante, Spain. d.lozano@ua.es

Country: United States

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MEDLINETA: J Phys Chem B

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