Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 40, Issue 3, Pages 1472-1480Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2014.11.104
Keywords
Copper-silica aerogel catalyst; Cogelation; Ambient pressure drying; Methanol steam reforming; CO selectivity
Categories
Ask authors/readers for more resources
In this work, the copper silica aerogel catalyst was prepared by cogelation of copper and silica precursors in a sol gel process followed by chemical surface modification and ambient pressure drying. The results of characterizations by XRD, BET, FE-SEM, TEM, FTIR and TPR showed the prepared catalysts had high surface area and pore size distribution in the range of 1-10 nm. Also, uniform nanostructural morphology with particle size of 5-20 nm was observed. The copper loading and calcination temperature influenced the morphology and texture of the catalyst and the nature of copper species. So, copper existed within the silica matrix as highly dispersed isolated copper ions or CuO crystallite clusters which have good interaction with the matrix. Catalytic performance for hydrogen production from methanol reforming was evaluated at 300 degrees C in the methanol feed rate of 12 -65 mmol g(-1) h(-1). The catalyst activity was increased by increasing the copper loading and calcination temperature. In comparison with CuO/ZnO/Al2O3 commercial catalyst which showed 6-11% CO selectivity, no CO formation was detected using the prepared Cu/SiO2 aerogel catalysts. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available