Selective hydrogenolysis of 5-hydroxymethylfurfural to 2,5-dimethylfuran over Co3O4 catalyst by controlled reduction
Selective hydrogenolysis of 5-hydroxymethylfurfural to 2,5-dimethylfuran over Co3O4 catalyst by controlled reduction
复制标题
Co3O4 催化剂上控制还原选择性氢解 5-羟甲基糠醛生成 2,5-二甲基呋喃
DOI：
10.1016/j.jechem.2018.03.008
复制
发表时间：
2019-03-01
影响因子：
13.1
通讯作者：
Ma, Longlong
中科院分区：
文献类型：
--
作者：
Li, Dan;Liu, Qiying;Ma, Longlong
5-羟甲基糠醛（HMF）经加氢脱氧（HDO）制得的2，5-二甲基呋喃（DMF）具有热值高、辛烷值高、沸点适宜等特点，是一种优质燃料。将HMF选择性加氢成液体燃料DMF已被广泛研究。本文采用共沉淀法制备了Co 3 O 4催化剂，并在不同温度下还原得到Co-CoOx催化剂。采用XRD、TEM、XPS、TPR、BET、NH3-TPD等手段对催化剂进行了表征。Co-CoOx具有大量的Co金属和CoOx酸性位点，其中Co充当活性氢化位点，CoOx充当酸促进剂以促进HMF到DMF的选择性HDO。Co-CoOx的协同效应是HMF HDO的关键，在170 ℃、12 h、400 ℃还原温度下，DMF收率可达83.3%。该方法不仅节省了催化剂成本，而且促进了生物质能源的利用。(C)2018年科学出版社和中国科学院大连化学物理研究所。由爱思唯尔公司和科学出版社出版。All rights reserved.
2,5-dimethyfuran (DMF), which is produced from 5-hydroxymethyfurfural (HMF) by hydrodeoxygenation (HDO), is a high quality fuel due to the high heating value, the high octane number and the suitable boiling point. Selective hydrogenation of HMF into liquid fuel DMF has been widely researched. In this paper, Co3O4 catalyst was prepared by co-precipitation and was reduced at different temperatures to form Co-CoOx catalysts. The characterization of catalysts was tested by XRD, TEM, XPS, TPR, BET and NH3-TPD. Co-CoOx possessed a high amount of Co metal and CoOx acidic sites, wherein Co worked as the active hydrogenation sites and CoOx acted as the acid promoter to facilitate the selective HDO of HMF to DMF. The synergistic effect of Co-CoOx is the key for HDO of HMF, obtaining 83.3% of DMF yield at 170 degrees C, 12 h and the reduction temperature of 400 degrees C. This method not only saves the catalyst cost, but also promotes the utilization of biomass energy. (C) 2018 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.