燃料化学学报2017，Vol.45Issue(1)：43-47,5.
焙烧温度对CuMgAl催化剂催化糠醛气相加氢制糠醇性能的影响
Effect of calcination temperature on the catalytic performance of CuMgAl catalysts for furfural gas phase selective hydrogenation to furfuryl alcohol
孙蛟 1任国卿 1黄玉辉 1陈晓蓉 1梅华2
作者信息
- 1. 南京工业大学 化学化工学院，江苏 南京 210009
- 2. 南京 诺盟化工 催化氢化工程技术研究中心，江苏 南京 210009
- 折叠
摘要
Abstract
The CuMgAl hydrotalcite-type precursors were prepared by fractional precipitation process with the mass ratio of m ( CuO) :m ( MgO) :m ( Al2 O3 )= 25 :26 :49. CuMgAl-t catalysts were calcined at various temperatures. CuMgAl-t catalysts were characterized by BET, TGA, XRD and H2-TPR and CO2-TPD. The catalytic performance of CuMgAl-t catalysts for the gas phase hydrogenation of furfural to furfuryl alcohol was investigated in a fixed bed reactor. The results showed that the calcination temperatures had effect on catalysts activity, stability and product selectivity. The lower temperature calcined catalysts with reduction can obtain more active center and the higher temperature calcined catalysts had more alkaline sites on the surface of catalysts. CuMgAl catalyst calcined at 450 ℃ had suitable surface active centers and alkaline sites. Under the reaction conditions of atmospheric pressure, reaction temperature of 180℃, molar ratio of hydrogen to furfural of 5 and volume space velocity of 0 . 3 h-1 , the furfural conversion of 98 . 64% and furfuryl alcohol selectivity of 97 . 66% were reached over the CuMgAl-450 .关键词
分步沉淀过程/糠醛/糠醇/气相加氢/CuMgAl催化剂Key words
fractional precipitation process/furfural/furfuryl alcohol/gas phase hydrogenation/CuMgAl catalysts分类
化学化工引用本文复制引用
孙蛟,任国卿,黄玉辉,陈晓蓉,梅华..焙烧温度对CuMgAl催化剂催化糠醛气相加氢制糠醇性能的影响[J].燃料化学学报,2017,45(1):43-47,5.
