Hydrogen-rich gas production from ethanol steam reforming over Ni/Ga/Mg/Zeolite Y catalysts at mild temperature

Title
Hydrogen-rich gas production from ethanol steam reforming over Ni/Ga/Mg/Zeolite Y catalysts at mild temperature
Author(s)
강미숙곽병섭[곽병섭]이준수[이준수]이준성[이준성]최병현[최병현]지미정[지미정]
Keywords
CARBON-DIOXIDE; NICKEL-CATALYSTS; N-BUTANE; METHANE; DEACTIVATION; HYDROCARBONS; OXIDATION; PD/CERIA; NI/AL2O3; GALLIUM
Issue Date
201112
Publisher
ELSEVIER SCI LTD
Citation
APPLIED ENERGY, v.88, no.12, pp.4366 - 4375
Abstract
In order to reduce the coke formation over a conventional Ni/gamma-Al(2)O(4) catalyst and increase the activity at low temperature, we used the impregnation approach to synthesize MgO (30.0 wt.%)/Zeolite Y catalysts loaded with bimetallic Ni(10.0 wt.%)/Ga(10.0-30.0 wt.%) and study the steam-reforming reactions of ethanol. The Ga-loaded catalyst impregnated between the Ni and Mg components exhibits significantly higher reforming reactivity compared to the conventional Ni/Mg/Zeolite Y catalyst. The main products from steam reforming over the Ni/Ga/Mg/Zeolite Y catalyst are only H(2) and CH(4) at above 550 degrees C, and the catalytic performances differ according to the amount of Ga. The H(2) production and ethanol conversion are maximized at 87% and 100%, respectively, over Ni(10)/Ga(30)/Mg(30)/Zeolite Y at 700 degrees C for 1 h at CH(3)CH(2)OH:H(2)O = 1:3 and a gas hourly space velocity (GHSV) of 6740 h(-1), and the high performance is maintained for up to 59 h. (C) 2011 Elsevier Ltd. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/24157http://dx.doi.org/10.1016/j.apenergy.2011.05.017
ISSN
0306-2619
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이과대학 > 화학생화학부 > Articles
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