Polyethylene conversion by partial oxidation in supercritical water |
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Authors: | Masaru Watanabe Shuhei Sawamoto Tadafumi Adschiri Kunio Arai |
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Institution: | (1) Department of Chemical Engineering, Tohoku University, 07 Aza-Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan Tel. and Fax +81-22-217-7246 e-mail: karai@arai.che.tohoku.ac.jp, JP |
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Abstract: | This paper gives the results of partial oxidation experiments of polyethylene (PE) in supercritical water (SCW). The experiments
were carried out at a reaction temperature of 693K and a reaction time of 30 min using 6 cm3 of a batch-type reactor. The loaded sample weight was 0.3 g and there was 2.52 g water (0.42 g/cm3). The ratio of oxygen atoms to carbon atoms was 0.3. The results show a significant CO formation in O2–SCW, and the 1-alkene/n-alkane ratio in partial oxidation was higher than that in SCW pyrolysis. These results suggest the possibility of the hydrogenation
of hydrocarbon through partial oxidation followed by a water–gas shift reaction.
Received: July 19, 2000 / Accepted: September 28, 2000 |
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Keywords: | Partial oxidation Polyethylene Water– gas shift reaction Supercritical water |
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