One-Pot Production of Cellulosic Ethanol via Tandem Catalysis over a Multifunctional Mo/Pt/WOx Catalyst

One-Pot Production of Cellulosic Ethanol via Tandem Catalysis over a Multifunctional Mo/Pt/WOx Catalyst
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多功能 Mo/Pt/WOx 催化剂串联催化一锅法生产纤维素乙醇

DOI:
10.1016/j.joule.2019.05.020
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发表时间:
2019-08
期刊:
影响因子:
39.8
通讯作者:
Zhang Tao
Zhang Tao
中科院分区:
材料科学1区
文献类型:
--
作者:
Yang Man;Qi Haifeng;Liu Fei;Ren Yujing;Pan Xiaoli;Zhang Leilei;Liu Xiaoyan;Wang Hua;Pang Jifeng;Zheng Mingyuan;Wang Aiqin;Zhang Tao

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纤维素乙醇是最重要的生物燃料之一,但其生物转化过程效率低、成本高,阻碍了其商业化生产。在这里,我们报告了一种新的化学催化方法一锅法生产纤维素乙醇。在多功能Mo/Pt/WOx催化剂的作用下,纤维素一锅法直接转化为乙醇,产率高达43.2C %。动力学分析表明,这种一锅法涉及串联催化从纤维素到乙二醇(快速),然后由乙二醇氢解乙醇(缓慢)。表征结果表明,MoOx与介孔WOx载体上的金属Pt形成了低配位的键合,构成了xOMo-Pt-WOx界面位,为乙二醇的C-O裂解提供了高活性。
Cellulosic ethanol is one of the most important biofuels, yet its commercial production is hindered by the low-efficiency and high-cost bioconversion process. Here, we report a new chemocatalytic approach for the one-pot production of cellulosic ethanol. With a multifunctional Mo/Pt/WOxcatalyst, cellulose is directly converted to ethanol in a one-pot reaction with a yield as high as 43.2 C%. Kinetic analysis reveals that such a one-pot process involves tandem catalysis from cellulose to ethylene glycol (rapid) followed by hydrogenolysis of ethylene glycol to ethanol (slow). Characterizations show that isolated and low-coordinated MoOxbonds to metallic Pt particles on the mesoporous WOxsupport, constitutingxOMo–Pt–WOxinterfacial sites, which offer high activity for C–O cleavage of ethylene glycol.
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