Porous Properties of Activated Carbons Prepared from Mixtures of Synthesized Phenolic Resins with Metal Salts
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概要
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Activated carbons were prepared from carbonized phenolic resins by steam-activation via a pre-treatment, that is mixing of raw materials with Ca(NO3)2·4H2O and acid-treatment after carbonization. This pre-treatment method has been reported as a method to produce mesoporous activated carbons. In the present work, three different novolak type phenol formaldehyde resins were synthesized under different molar ratio of formaldehyde (F) to phenol (P) (F/P = 0.3, 0.5, and 0.8) and were used as the precursors for activated carbons. It was confirmed that the pre-treatment method effectively enhances mesopores on activated carbons from synthesized phenolic resins prepared by F/P = 0.3 and 0.5, and their pore size distributions depended on the synthesizing conditions (F/P). Namely, it was found that by decreasing the F/P ratio of the precursor resin to the values lower than those usually adopted for commercial phenolic resin production, i.e., less than 0.5, activated carbons with developed mesopores could be obtained. The micropore developments of activated carbons were also influenced by F/P, and the influences were on the formation of pores larger than 0.40 nm. It was suggested that the thermoplastic nature of prepared resins (that can be changed by F/P) influence the porous properties of resultant activated carbons and the effect of the pre-treatments.
- 社団法人 化学工学会の論文
- 2007-05-01
著者
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Mukai S
Division Of Chemical Process Engineering Graduate School Of Engineering Hokkaido University
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Tamon H
Department Of Chemical Engineering Graduate School Of Engineering Kyoto University
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Tamon Hajime
Dep. Of Chemical Engineering Kyoto Univ.
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Tamon H
Kyoto Univ. Kyoto
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Tamon Hajime
Department Of Chemical Engineering Kyoto University
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Tamon H
Department Of Chemical Engineering Kyoto University
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Mukai Shin
Division Of Chemical Process Engineering Graduate School Of Engineering Hokkaido University
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Tamon H
Kyoto Univ. Kyoto Jpn
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Tamon Hajime
Department Of Chemical Engineering Graduate School Of Engineering Kyoto University
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NAKAGAWA Kyuya
Department of Mechanical Engineering, University of Hyogo
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TAMURA Kazuhisa
Department of Chemical Engineering, Kyoto University
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SUZUKI Tetsuo
Department of Chemical Engineering, Kyoto University
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Suzuki Tetsuo
Department Of Chemical Engineering Kyoto University
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Nakagawa Kyuya
Department Of Mechanical Engineering University Of Hyogo
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Tamura Kazuhisa
Department Of Chemical Engineering Kyoto University
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Nakagawa Kyuya
Department of Mechanical and System Engineering, University of Hyogo
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