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Hydrogenation of 5-hydroxymethylfurfural to 2,5 dimethylfuran over nickel supported tungsten oxide nanostructured catalyst†
Sustainable Energy & Fuels ( IF 5.6 ) Pub Date : 2017-10-16 00:00:00 , DOI: 10.1039/c7se00363c
Nazia Siddiqui 1, 2, 3, 4 , Anupam Singha Roy 1, 2, 3, 4, 5 , Reena Goyal 1, 2, 3, 4 , Rubina Khatun 1, 2, 3, 4 , Chandrashekar Pendem 1, 2, 3, 4 , Appala Naidu Chokkapu 1, 2, 3, 4 , Ankur Bordoloi 1, 2, 3, 4 , Rajaram Bal 1, 2, 3, 4
Affiliation  

2,5 Dimethylfuran (DMF) can be considered as a promising new generation alternative fuel, which has the potential to solve the fossil fuel shortage and also the ongoing global warming issues. Although there are several reports in the literature on the production of DMF from 5-hydroxymethylfurfural, in most of the cases, the operating pressure is very high and expensive metals, such as Pd, Pt, and Rh, have been used in the presence of organic solvents. Herein, we report the preparation of nickel oxide nanoparticles supported on nanostructured tungsten oxide and the use of this catalyst as a heterogeneous catalyst for the selective hydrogenation of the biomass-derived platform molecule 5-hydroxymethylfurfural (HMF) to 2,5-dimethylfuran (DMF), a liquid fuel, at 10 bar H2 pressure and 180 °C temperature in an aqueous medium. The catalyst was characterized using XRD, TEM, SEM, XPS, Raman and FTIR spectroscopies, TGA, and ICP-AES techniques. The catalyst showed >99% conversion of HMF with 95% selectivity of DMF without the use of any additives under optimized reaction conditions. The effect of reaction parameters, such as temperature, pressure of H2, and the loadings of Ni, was investigated and has been discussed in detail. The reusability of the catalyst was tested by conducting repeat experiments with the spent catalyst, where it was found that the catalyst displayed no changes in its activity and selectivity even after 5 successive runs. Based on the experimental results, a possible reaction pathway has been proposed.

中文翻译:

镍负载氧化钨纳米结构催化剂上的5-羟甲基糠醛加氢为2,5二甲基呋喃

2,5二甲基呋喃(DMF)可被视为有前途的新一代代用燃料,它有可能解决化石燃料短缺以及持续的全球变暖问题。尽管文献中有几篇有关由5-羟甲基糠醛生产DMF的报道,但在大多数情况下,工作压力非常高,并且在有Pd,Pt和Rh的情况下使用了昂贵的金属,例如Pd,Pt和Rh。有机溶剂。本文中,我们报道了负载在纳米结构氧化钨上的氧化镍纳米粒子的制备方法,以及该催化剂作为非均相催化剂用于将生物质衍生的平台分子5-羟甲基糠醛(HMF)选择性氢化为2,5-二甲基呋喃(DMF)的方法。 ),液体燃料,在10 bar H 2下在水性介质中的最高压力和180°C的温度。使用XRD,TEM,SEM,XPS,拉曼光谱和FTIR光谱,TGA和ICP-AES技术对催化剂进行了表征。在优化的反应条件下,不使用任何添加剂,该催化剂显示出HMF的转化率> 99%,DMF的选择性为95%。研究了反应参数的影响,例如温度,H 2的压力和Ni的负载量,并进行了详细讨论。通过对用过的催化剂进行重复实验来测试催化剂的可重复使用性,在该实验中发现,即使连续运行5次,该催化剂的活性和选择性也没有变化。根据实验结果,提出了可能的反应途径。
更新日期:2017-10-16
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