【摘要】 5-羟甲基糠醛(HMF)选择催化加氢制备高价值液体燃料2,5-二甲基呋喃(DMF)是制备可再生燃料的有效途径。高效、低成本催化剂及催化工艺的开发是关键。以钴基金属有机框架材料ZIF-67为前驱体，通过一定气氛和温度热处理得到钴基催化剂Co@NC,探究了催化剂分别在不同反应条件下的性能。结果表明，以仲丁醇为反应溶剂，在反应温度180℃和氢气分压2.0 MPa的条件下反应4 h, HMF转化率可达到100%,DMF选择性为82.9%,且循环使用性能良好。通过对催化剂分析表征，发现前驱体经过混合气热处理后形成了由限域钴碳纳米管堆积成的中空十二面体，其中Co~0和CoN_x是催化剂主要活性组分，对■键、C—O键表现出较好的加氢性能。更多还原

【Abstract】 Selective catalytic hydrogenation of 5-hydroxymethylfurfural(HMF) to high-value liquid fuel 2,5-dimethylfuran(DMF) is an effective way to prepare renewable fuels.It is crucial to develop highly efficient, low-cost catalysts and catalytic processes.In this paper, cobalt-based oganic framework material ZIF-67 was used as a precursor to obtain the target cobalt-based catalyst Co@NC by thermal treatment under certain atmosphere and temperature condition, and the performance of the catalyst was investigated under different reaction condition.The results showed that HMF conversion of 100% and selectivity to DMF of 82.9% was attained using 2-butanol as the reaction solvent, at reaction temperature of 180 ℃ and hydrogen partial pressure of 2.0 MPa for 4 h, with good recycling performance of the catalyst.Characterization of the catalyst showed that, after thermal treatment of the mixture, the precursor formed a hollow dodecahedron composed of stacking carbon nanotubes limited-domain cobalt, in which Co~0 and CoN_x,as the main active components, exhibited good ■ bond hydrogenation activity.更多还原