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

Byeong Sub Kwak, Jun Su Lee, Jun Sung Lee, Byung-Hyun Choi, Mi Jung Ji and Misook Kang

Applied Energy, 2011, vol. 88, issue 12, 4366-4375

Abstract: In order to reduce the coke formation over a conventional Ni/γ-Al2O4 catalyst and increase the activity at low temperature, we used the impregnation approach to synthesize MgO (30.0wt.%)/Zeolite Y catalysts loaded with bimetallic Ni(10.0wt.%)/Ga(10.0–30.0wt.%) 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 H2 and CH4 at above 550°C, and the catalytic performances differ according to the amount of Ga. The H2 production and ethanol conversion are maximized at 87% and 100%, respectively, over Ni(10)/Ga(30)/Mg(30)/Zeolite Y at 700°C for 1h at CH3CH2OH:H2O=1:3 and a gas hourly space velocity (GHSV) of 6740h−1, and the high performance is maintained for up to 59h.

Keywords: Hydrogen production; Ethanol steam-reforming reaction; Ni/Mg/Zeolite Y; Ni(10)/Ga(30)/Mg(30)/Zeolite Y (search for similar items in EconPapers)
Date: 2011
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Citations: View citations in EconPapers (11)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:88:y:2011:i:12:p:4366-4375

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DOI: 10.1016/j.apenergy.2011.05.017

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