高温高圧水中部分酸化によるグルコースからの水素製造技術(第2報):反応機構およびギ酸の分解速度

高温高圧水中部分酸化によるグルコースからの水素製造技術(第2報):反応機構およびギ酸の分解速度
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高温高压水中葡萄糖部分氧化制氢技术(报告二):反应机理及甲酸分解率

DOI:
10.3775/jie.87.713
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发表时间:
2008
影响因子:
0.2
通讯作者:
宏 猪股
宏 猪股
中科院分区:
--
文献类型:
--
作者:
高橋 麻耶子;昌樹 大田;貴亮 保科;賢 渡邉;善之 佐藤;宏 猪股

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通过在300°C的高压高温水中用ZnO部分氧化葡萄糖,葡萄糖以相对高的产率转化为H2,并且没有CH 4形成。为了理解反应机理和该过程的最佳条件,我们在200-300°C下进行葡萄糖部分氧化以分析H2的中间体,而没有ZnO,其可能促进中间体成为H2。结果,我们检测到HCOOH的高产率。HCOOH的生成对反应温度敏感,200°C时产率最高。通过在200-300°C下进行的有无ZnO的HCOOH转化实验,证实了ZnO的作用是促进HCOOH分解为H2和CO2。HCOOH与ZnO的转化在300°C下在几分钟内完成。通过研究,我们认为葡萄糖部分氧化制H2的两步反应是有效的:葡萄糖部分氧化在200°C下进行,HCOOH的转化在300°C以上完成。为了证实这一想法,进行了两阶段反应:在200°C下用ZnO进行葡萄糖的部分氧化,然后将温度升高至300°C以促进H2的形成。H2产率低于预期。这可能是由于ZnO抑制了葡萄糖在200°C部分氧化时HCOOH的形成。
By partial oxidation of glucose with ZnO in high pressure high temperature water at 300°C, glucose was converted into H2 with relatively high yield and without CH4 formation. In order to understand the reaction mechanism and the optimum condition of the process, we performed glucose partial oxidation at 200-300°C to analyse an intermediate of H2, without ZnO, which probably promotes the intermediate into H2. As a result, we detected a high yield of HCOOH. The formation of HCOOH was sensitive to reaction temperature and the yield was the highest at 200°C among the experimental conditions. It was confirmed that the role of ZnO was a promoter of HCOOH decomposition into H2 and CO2 through HCOOH conversion experiments with and without ZnO at 200-300°C. The conversion of HCOOH with ZnO was within a few minutes at 300°C. Through the study, we suggested that two-stage reaction is effective for H2 formation from glucose partial oxidation: the partial oxidation of glucose is conducted at 200°C and the conversion of HCOOH is achieved over 300°C. To confirm the idea, the two-stage reaction was performed: the partial oxidation of glucose was conducted at 200°C with ZnO followed to increase temperature up to 300°C for promotion of H2 formation. The H2 yield was less amount than expected. This was probably due that ZnO prohibited the formation of HCOOH on glucose partial oxidation at 200°C.
高温高压水中葡萄糖部分氧化制氢技术(第一篇报告):催化剂的选择和作用评估
DOI: --
发表时间: 2008
期刊: 日本エネルギー学会誌 (採録決定)
影响因子: --
作者:
N.Sano;F.Ohtsuki;高橋麻耶子
通讯作者: 高橋麻耶子
DOI: 10.1021/jp0626768
发表时间: 2006-09
期刊: The journal of physical chemistry. A
影响因子: --
作者:
Y. Yasaka;Ken Yoshida;Chihiro Wakai;N. Matubayasi;M. Nakahara
通讯作者: Y. Yasaka;Ken Yoshida;Chihiro Wakai;N. Matubayasi;M. Nakahara