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Volume 65, Issue 3
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[in Japanese]1986 Volume 65 Issue 3 Pages 153
Published: March 20, 1986
Released on J-STAGE: June 28, 2010
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Yoshio KAMIYA1986 Volume 65 Issue 3 Pages 154-166
Published: March 20, 1986
Released on J-STAGE: June 28, 2010
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Katuji INOKUCHI, C. RUYS1986 Volume 65 Issue 3 Pages 167-179
Published: March 20, 1986
Released on J-STAGE: February 23, 2011
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Toshiaki KABE, Osamu NITOH, Akira KAWAKAMI, Motoi MARUMOTO, Kouhei NAK ...1986 Volume 65 Issue 3 Pages 180-186
Published: March 20, 1986
Released on J-STAGE: June 28, 2010
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Junichi OZAKI, Tetsuya HAGA, Yoshiyuki NISHIYAMA1986 Volume 65 Issue 3 Pages 187-193
Published: March 20, 1986
Released on J-STAGE: October 21, 2011
JOURNAL FREE ACCESSThe catalytic properties of three catalysts, potassium, calcium and nickel, in coal char gasification were compared using Blair Athol char devolatilized at 750°C and steam-helium or -hydrogen as the gasifier. The three catalysts behaved differently in reaction pattern, dependence on the amount of the catalyst and composition of the products. In steam-helium, the activities of the calcium and nickel decreased more rapidly than those of the potassium. The catalytic conversion with the nickel was almost proportional to the amount of the nickel, while that with the calcium slightly depended on its amount and this is ascribed to its poor dispersion on char surface. The rate of the nickel-catalyzed gas-ification in steam-hydrogen increased gradually with time until a maximum at about 25% burn-off and then decreased.
With a demineralized char, smaller amount of potassium was effective, as compared to the untreated char, probably due to the absence of the deactivating action of mineral matters. In the initial stage of this reaction, carbon monoxide was the main product, whereas carbon dioxide was the main one in the later stage. This is taken to indicate that potassium salt catalyzed the formation of carbon dioxide directly from carbon and steam, under the differential reaction conditions.View full abstractDownload PDF (876K) -
Toshinori KOJIMA, Tadaaki SHIMIZU, Daizo KUNI, Takehiko FURUSAWA1986 Volume 65 Issue 3 Pages 194-203
Published: March 20, 1986
Released on J-STAGE: June 28, 2010
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Takeo KOMURO, Kenichi Gomi, Norio ARASHI, Yukio HISHINUMA, Osamu KANDA ...1986 Volume 65 Issue 3 Pages 204-211
Published: March 20, 1986
Released on J-STAGE: June 28, 2010
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Akihiko Owi, Hyogoro AOYAMA, Akira OBUCHI, Akimitsu MATSUMURA, Hideo O ...1986 Volume 65 Issue 3 Pages 212-219
Published: March 20, 1986
Released on J-STAGE: June 28, 2010
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