期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 45, 期 45, 页码 24054-24065出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2019.03.272
关键词
Highly dispersed Ni and Cu; gamma-valerolactone; Hydrogenation; Methyl levulinate
资金
- Thailand Research Fund
- National Nanotechnology Center (NANOTEC)
- Synchrotron Light Research Institute (SLRI) [BRG6080015, TRG6080004]
- Research Network NANOTEC (RNN) program of the National Nanotechnology Center (NANOTEC), NSTDA, Ministry of Science and Technology, Thailand
Copper and nickel nanoparticles highly dispersed on an ordered mesoporous silica support (SBA-15) were prepared by a glycol-assisted impregnation method and tested for the catalytic transfer hydrogenation reaction of methyl levulinate to gamma-valerolactone (GVL). Characterizations by high resolution transmission electron microscopy, X-ray diffraction, N-2 sorption, H-2 temperature-programmed reduction and X-ray absorption spectroscopy confirm that the highly dispersed nanoparticles were well-anchored to the mesopores of SBA-15 with the strong interaction. Comparing to a catalyst synthesized by a conventional aqueous impregnation method, our catalyst shows a higher conversion and greater selectivity towards GVL of reaction at 140-170 degrees C using 2-propanol as a solvent and a hydrogen donor. Results showed that Ni-Cu/SBA-15 (EG) had much better activity, providing 91.3% conversion of ML with 89.7% selectivity towards GVL in 3 h at 140 degrees C. The high compositional homogeneity, uniform distribution of the nanoparticles in the mesoporous channels and the strong interaction between the metal nanoparticles and SBA-15 contribute to the superior catalytic performance. This catalyst also demonstrates superb stability over the course of 5 reaction cycles without significant loss in catalytic activity and selectivity towards GVL formation. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据