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学科主题: 物理化学
题名: the University of Namur (FUNDP) and the Université Catholique de Louvain (UCL)
作者: Wang AQ(王爱琴) ;  Zhang T(张涛)
会议文集: the University of Namur (FUNDP) and the Université Catholique de Louvain (UCL)
会议名称: Advanced Complex Inorganic Nano-materials
会议日期: 2011-9-11
出版日期: 2011
会议地点: 那慕尔
通讯作者: 张涛
出版者: 待补充
出版地: 待补充
合作性质: 分会特邀报告
部门归属: 1501
主办者: the University of Namur (FUNDP) and the Université Catholique de Louvain (UCL)
摘要: A series of Ni-promoted W2C/AC catalysts were investigated for the catalytic conversion of Jerusalem artichoke tuber (JAT) under hydrothermal conditions and hydrogen pressure. It was found that even a small amount of Ni could greatly promote the conversion of JAT to 1,2-propylene glycol (1,2-PG) while pure W2C/AC catalyst resulted in the selective formation of acetol. The product distribution profiles with the reaction temperature, time and H2 pressure indicated that 1,2-PG formed as a result of acetol hydrogenation which was catalyzed by Ni. Thus, there was synergy between W2C and Ni, and the best performance with 1,2-PG yield of 38.5% was obtained over a 4%Ni-20%W2C/AC catalyst at 245 oC, 6MPa H2 and 80 min. In order to understand the reaction process, some important intermediates such as inulin, fructose, acetol, glyceraldehyde, and 1,3-dihydroxyacetone were respectively used as the feedstock. Based on the product distribution derived from these intermediates, a reaction pathway is proposed where JAT is first hydrolyzed into a mixture of fructose and glucose under the catalysis of H+, then the sugars underwent a retro-aldol reaction followed by hydrogenation catalyzed by Ni-W2C.
英文摘要: A series of Ni-promoted W2C/AC catalysts were investigated for the catalytic conversion of Jerusalem artichoke tuber (JAT) under hydrothermal conditions and hydrogen pressure. It was found that even a small amount of Ni could greatly promote the conversion of JAT to 1,2-propylene glycol (1,2-PG) while pure W2C/AC catalyst resulted in the selective formation of acetol. The product distribution profiles with the reaction temperature, time and H2 pressure indicated that 1,2-PG formed as a result of acetol hydrogenation which was catalyzed by Ni. Thus, there was synergy between W2C and Ni, and the best performance with 1,2-PG yield of 38.5% was obtained over a 4%Ni-20%W2C/AC catalyst at 245 oC, 6MPa H2 and 80 min. In order to understand the reaction process, some important intermediates such as inulin, fructose, acetol, glyceraldehyde, and 1,3-dihydroxyacetone were respectively used as the feedstock. Based on the product distribution derived from these intermediates, a reaction pathway is proposed where JAT is first hydrolyzed into a mixture of fructose and glucose under the catalysis of H+, then the sugars underwent a retro-aldol reaction followed by hydrogenation catalyzed by Ni-W2C.
语种: 英语
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/115996
Appears in Collections:中国科学院大连化学物理研究所_会议论文

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Recommended Citation:
Wang AQ,Zhang T. the University of Namur (FUNDP) and the Université Catholique de Louvain (UCL)[C]. 见:Advanced Complex Inorganic Nano-materials. 那慕尔. 2011-9-11.
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