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Pore Characteristics of Micro and Mesoporous Materials Probed with CO2 Adsorption Measurement at 273 K

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CO2 adsorption measurement at 273 K was employed to see if the porous material has either micropore or mesopore dominantly. The adsorption isotherm of CO2 on microporous solid such as zeolite A and Y was the typical Langmuir type while on SBA-15, silica gel and polymer, the adsorption isotherm was proportional to the applied pressure, following the Henry's law. Such distinctive difference between the adsorption isotherms provided the reasonable basis to discriminate the pore characteristics otherwise it was difficult to obtain it. Also, it was possible to get the surface property of polymer due to the pretreatment using CO2 adsorption measurement at 273 K while the N2 adsorption isotherm measurement at 77 K did not give the meaningful data.
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Document Type: Research Article

Publication date: 01 October 2008

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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