Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 40, Issue 8, Pages 3207-3216Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2014.12.113
Keywords
Diesel; Heavy hydrocarbons; Pre-reforming; Hydrogen; Methane rich syngas
Categories
Funding
- Global Frontier R&D Program on Center for Multiscale Energy System - National Research Foundation under the Ministry of Science, ICT Future, Korea [2011-0031569]
- Fundamental R&D Program for Core Technology of Materials - Ministry of Knowledge Economy, Republic of Korea [10037301]
- Saudi Aramco, Saudi Arabia
- Korea Evaluation Institute of Industrial Technology (KEIT) [10037301] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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In this paper, catalyst compositions and preparation methods of Ni-Me/Ce0.9Gd0.1O2-x (Me: Rh, Pt and Ru) are investigated for diesel pre-reforming. Ni loading is optimized with respect to catalytic activity and coke formation. Incipient wetness method and glycine nitrate process are compared for catalyst preparation. Rh, Pt and Ru are added to improve the catalytic stability. Micro-reactor test, temperature programmed oxidation and temperature programmed reduction are used to compare catalysts. The optimized composition of Ni-Me/Ce0.9Gd0.1O2-x is 19.5 wt.% Ni and 0.5 wt.% Ru on Ce0.9Gd0.1O2-x. Higher than 20 wt.% of Ni loading is limited by the coke formation. Ru helps coke oxidation at low temperature. Glycine nitrate process is superior to the incipient wetness method with respect to the catalysts stability. 2000 h of pre-reforming operation is carried out using the optimized catalyst. 70.6 mol% H-2 and 4.7 mol% CH4 are produced in a stable manner. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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