Devianto, Hary Han, Jonghee Yoon, Sung Pil Nam, Suk Woo Lim, Tae-Hoon Oh, In-Hwan Hong, Seong-Ahn Lee, Ho-In 2024-01-20T16:33:36Z 2024-01-20T16:33:36Z 2021-09-04 2011-08 0360-3199 https://pubs.kist.re.kr/handle/201004/130147 The effects of impurities in bioethanol, such as diethyl amine, acetic acid, methanol, and propanol, on the performance of a direct internal reforming molten carbonate fuel cell (MCFC) were investigated. A single cell with an Ni/MgO-coated anode was operated using bioethanol containing 1% impurities. The cell voltages of the single cells increased after the introduction of methanol and diethyl amine impurities. On the other hand, the single cell operated with propanol and acetic acid impurities showed somewhat worse performance than when it was operated without impurities. Activity tests were carried out to explain this phenomenon in detail. These tests showed that methanol as an impurity is reformed easily and increases the H(2) concentration in the reformed gas thereby increasing conversion and selectivity. Propanol, which is reformed incompletely, negatively affects the conversion and H(2) selectivity. Diethyl amine follows a basic reaction pathway and is reformed completely without coke formation, and acetic acid, which follows an acidic pathway, forms significant coke on the catalyst which deactivates the catalytic activity. Mixtures of these four impurities, in varying mole ratios were tested for catalytic activity, and it was found that of the mixtures tested, the one with a ratio 2:1:4:1 (methanol:propanol:diethyl amine:acetic acid) showed the best catalytic activity. Copyright (C) 2010, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD SUPPORTED NICKEL-CATALYSTS NI-BASED CATALYSTS HYDROGEN-PRODUCTION BIO-ETHANOL SELECTIVE HYDROGENATION CO CATALYSTS STEAM 2-PROPANOL MECHANISM METHANOL The effect of impurities on the performance of bioethanol-used internal reforming molten carbonate fuel cell Article 10.1016/j.ijhydene.2010.09.070 1 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.36, no.16, pp.10346 - 10354 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 36 16 10346 10354 scie scopus 000294374800105 2-s2.0-79960924177 Chemistry, Physical Electrochemistry Energy & Fuels Chemistry Electrochemistry Energy & Fuels Article SUPPORTED NICKEL-CATALYSTS NI-BASED CATALYSTS HYDROGEN-PRODUCTION BIO-ETHANOL SELECTIVE HYDROGENATION CO CATALYSTS STEAM 2-PROPANOL MECHANISM METHANOL Bioethanol MCFC Steam reforming Impurities Coking