Aqueous phase hydrogenation of acetic acid to ethanol over Ir-MoOx/SiO2 catalyst

Aqueous phase hydrogenation of acetic acid to ethanol over Ir-MoOx/SiO2 catalyst
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Ir-MoOx/SiO2 催化剂上乙酸水相加氢制乙醇

DOI:
10.1016/j.catcom.2013.09.007
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发表时间:
2014-01
影响因子:
3.7
通讯作者:
Li, Ning
Li, Ning
中科院分区:
化学3区
文献类型:
--
作者:
Wang, Zhiqiang;Li, Guangyi;Liu, Xiaoyan;Huang, Yanqiang;Wang, Aiqin;Chu, Wei;Wang, Xiaodong;Li, Ning

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首次将Mo改性的Ir/SiO_2(Ir-MoO_x/SiO_2)催化剂用于乙酸水相加氢制乙醇,得到了性能最好的催化剂。Ir-MoOx/SiO_2的优异性能源于Ir-MoOx/SiO_2中紧密接触的Ir和Mo物种之间的协同作用。Ir-MoOx/SiO2对其他生物质衍生羧酸的加氢反应也是有效的。特别是以乙酰丙酸为原料时,2-戊醇(39.0%)和1,4-戊二醇(42.3%)的产率较高。据我们所知,这是首次关于乙酰丙酸在非均相催化剂上直接加氢合成2-戊醇和1,4-戊二醇的报道。
Mo modified Ir/SiO2(Ir-MoOx/SiO2) was firstly used for the aqueous-phase hydrogenation of acetic acid to ethanol and exhibited the best performance among the investigated catalysts. The synergy effect between the closely contacted Ir and Mo species is responsible for the excellent performance of Ir-MoOx/SiO2. Ir-MoOx/SiO2is also effective for the hydrogenation of other biomass derived carboxylic acids. Especially when levulinic acid was used as the feedstock, high yields of 2-pentanol (39.0%) and 1,4-pentanediol (42.3%) were obtained simultaneously. To our knowledge, this is the first report about the direct hydrogenation of levulinic acid to 2-pentanol and 1,4-pentanediol over heterogeneous catalyst.
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