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Atomic Layer Deposition of a Pt-Skin Catalyst for Base-Free Aerobic Oxidation of 5-Hydroxymethylfurfural to 2,5-Furandicarboxylic Acid
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-02-20 00:00:00 , DOI: 10.1021/acs.iecr.7b05101
Jinshan Shen 1, 2 , Hao Chen 2 , Kequan Chen 1 , Yong Qin 3 , Xiuyang Lu 2 , Pingkai Ouyang 1, 2 , Jie Fu 2
Affiliation  

A Pt–Ni/AC bimetallic catalyst was prepared by atomic layer deposition of Pt nanoparticles on the surface of Ni/AC for base-free oxidation of 5-hydroxymethylfurfural (5-HMF) to 2,5-furandicarboxylic acid (2,5-FDCA). A comparison of the Pt–Ni bimetallic catalyst with Ni and the Pt monometallic catalyst was demonstrated by X-ray diffraction (XRD), transmission electron microscopy (TEM), and temperature-programmed desorption of CO (CO-TPD). Compared with the Ni/AC and Pt/AC (1.6 wt % Pt) catalysts, the bimetallic Pt–Ni/AC catalyst had a higher activity for the oxidation of 5-HMF to 2,5-FDCA, with only a 0.4 wt % Pt loading. A 97.5% yield of 2,5-FDCA with 100% 5-HMF conversion was obtained after 15 h at 100 °C. A mass-based activity value of 35.8 h–1 was obtained over the Pt–Ni/AC-15ALD catalyst. The combination of Pt with Ni increased the ability of Pt for C═O adsorption and oxidation, thus increasing the activity of the Pt catalyst. Finally, the catalyst showed good reusability for at least four times without any reduction in the catalytic activity.

中文翻译:

Pt皮肤催化剂的原子层沉积,用于5-羟甲基糠醛无碱好氧氧化为2,5-呋喃二甲酸

通过在Ni / AC表面原子沉积Pt纳米颗粒,将5-羟甲基糠醛(5-HMF)无碱氧化为2,5-呋喃二甲酸(2,5-),制备了Pt-Ni / AC双金属催化剂。 FDCA)。通过X射线衍射(XRD),透射电子显微镜(TEM)和程序升温脱附的CO(CO-TPD)证明了Pt-Ni双金属催化剂与Ni和Pt单金属催化剂的比较。与Ni / AC和Pt / AC(1.6 wt%Pt)催化剂相比,双金属Pt-Ni / AC催化剂对5-HMF氧化成2,5-FDCA的活性更高,只有0.4 wt%铂加载。在100°C下放置15 h后,得到100%5-HMF转化率的2,5-FDCA 27.5-FDCA产率为97.5%。基于质量的活动值为35.8 h –1是通过Pt-Ni / AC-15ALD催化剂获得的。Pt与Ni的结合增加了Pt吸附C═O和氧化的能力,从而提高了Pt催化剂的活性。最后,该催化剂显示出良好的可重复使用性至少四次,而催化活性没有任何降低。
更新日期:2018-02-21
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