Glucose Decomposition in Water under Supercritical Pressure at 448-498 K
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- YOSHIDA Takuya
- Department of Mechanical Systems Engineering, Hiroshima University
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- YANACHI Satoru
- Department of Mechanical Systems Engineering, Hiroshima University
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- MATSUMURA Yukihiko
- Department of Mechanical Systems Engineering, Hiroshima University
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抄録
The behavior of glucose under hydrothermal conditions is of great interest in the development of processes for supercritical water gasification and the hydrothermal pretreatment of lignocellulosics. Our group examined this behavior in a series of glucose decomposition experiments in water at a pressure of 25 MPa in the temperature range of 448-498 K. The rate parameters of the reactions from glucose to the decomposition products were determined by the least squares method. The reaction order of unity for glucose decomposition was found to be the result of several reactions of various reaction orders proceeding in parallel. The reaction orders for the decompositions of fructose, erythrose, glyceraldehyde, and 1,6-anhydroglucose can be considered unity without large error. By examining the selectivity of glucose conversion reactions, we determined that almost all of the glucose was initially converted into fructose, but at 498 K, 1,6-anhydroglucose and erythrose selectivity matched that of fructose. The kinetic parameters determined in our experiments should be useful for predicting the reaction taking place in the pre-heating section of the supercritical water gasification process and in the hydrothermal pretreatment reactor used for the saccharification of cellulosic materials.
収録刊行物
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- 日本エネルギー学会誌
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日本エネルギー学会誌 86 (9), 700-706, 2007
一般社団法人 日本エネルギー学会
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詳細情報 詳細情報について
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- CRID
- 1390282679333437312
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- NII論文ID
- 110006421027
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- NII書誌ID
- AN10373883
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- COI
- 1:CAS:528:DC%2BD2sXht1SlsLfO
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- ISSN
- 18826121
- 09168753
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- NDL書誌ID
- 8954203
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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