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The investigation of hydrogenation behavior of furfural over sol–gel prepared Cu/ZrO 2 catalysts
Journal of Sol-Gel Science and Technology ( IF 2.5 ) Pub Date : 2020-07-05 , DOI: 10.1007/s10971-020-05352-6
Serap Algorabi , Solmaz Akmaz , Serkan Naci Koç

Hydrogenation of furfural over sol–gel Cu/ZrO2 catalysts was tested and selectivity to furfuryl alcohol (FA) and 2-methylfuran (MF) was investigated. Cu/ZrO2 catalysts were prepared by sol–gel method. BET, XRD, XPS, and TEM were used for characterization. The hydrogenation reactions were carried out by changing Cu content of the catalyst, the pressure, loading of catalyst, temperature, and time. The maximum 79.8% FA yield was obtained at 180 °C for 5 h under 1 MPa hydrogen pressure in the presence of 12% Cu containing non-noble metal catalysts. The maximum 56.4% MF yield was observed in the presence of 12% Cu containing metal catalysts at 200 °C under 2 MPa for 3 h. The increase in crystallinity of ZrO2 and decrease in BET surface area were observed after fifth use of 12% Cu containing catalyst. Although FA selectivity did not change, furfural conversion decreased from 100% to 58% at fifth reuse.



中文翻译:

溶胶-凝胶法制备的Cu / ZrO 2催化剂上糠醛加氢行为的研究

测试了溶胶-凝胶Cu / ZrO 2催化剂上糠醛的氢化反应,并研究了其对糠醇(FA)和2-甲基呋喃(MF)的选择性。Cu / ZrO 2催化剂采用溶胶-凝胶法制备。BET,XRD,XPS和TEM用于表征。通过改变催化剂的Cu含量,压力,催化剂的负载量,温度和时间来进行氢化反应。在含12%Cu的非贵金属催化剂的存在下,在1 MPa氢气压力下于180°C持续5 h,FA的最大收率为79.8%。在200°C,2 MPa,3 h的条件下,在含12%含铜的金属催化剂存在下,观察到最大的56.4%MF产率。ZrO 2的结晶度增加在第五次使用含12%Cu的催化剂后,观察到BET表面积的降低和BET表面积的降低。尽管FA的选择性没有改变,但糠醛转化率在第五次重复使用时从100%降低至58%。

更新日期:2020-09-11
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