CO 2 utilization via methanation using 40%Ni/Ce x Cr 1-x O 2 as a novel catalyst: a comparative study of packed-bed and
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CO2 utilization via methanation using 40%Ni/CexCr1‑xO2 as a novel catalyst: a comparative study of packed‑bed and micro‑channel reactors C. Wongsartsai1 · V. Tongnan1 · T. Sornchamni2 · N. Siri‑nguan2 · N. Laosiripojana3 · M. Hartley4 · U. W. Hartley1,3 Received: 4 June 2020 / Accepted: 24 August 2020 © Akadémiai Kiadó, Budapest, Hungary 2020
Abstract A series of 40% Ni/CexCr1-xO2 catalysts with x = 0, 0.1, 0.3, 0.5, 0.9 and 1 were synthesized using one-pot hydrolysis method as catalysts for the methanation process. The reaction was carried out in a packed-bed and micro-channel reactors. 40 wt% Ni/Ce0.5Cr0.5O2 showed the best catalytic performance towards the methanation process at 270 °C, giving 92.63% of C O2 conversion and 90.53% of C H4 yield. The catalyst exhibited great stability after 50 h of time-on-stream with carbon deposition around 0.0056 mg h−1 was observed. The micro-channel reactor showed better performance than the packed-bed reactor in term of methane production rate which offered amount of methane production rate 109.1 mL min−1 gcat−1 which nearly 8 times greater than that packed-bed reactor. Keywords CO2 utilization · methanation process · Mixed metal oxides · Microchannel reactor Electronic supplementary material The online version of this article (https://doi.org/10.1007/s1114 4-020-01853-1) contains supplementary material, which is available to authorized users. * U. W. Hartley Unalome.w.cpe@tggs‑bangkok.org 1
Department of Chemical and Process Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut’s University of Technology North Bangkok, Bangkok (KMUTNB), 1518 Pracharaj 1 Rd., Wongsa wang, Bangsue 10800, Bangkok, Thailand
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PTT Public Company Limited, 555 Vibhavadi Rangsit Road, Chatuchak 10900, Bangkok, Thailand
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The Joint Graduate School of Energy and Environment (JGSEE), King Mongkut’s University of Technology Thonburi (KMUTT), 126 Prachauthit Rd., Bangrnod, Thungkru 10140, Bangkok, Thailand
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Chemical Engineering Department, Engineering Faculty, King Mongkut’s University of Technology North Bangkok, Bangkok (KMUTNB, 1518 Pracharaj 1 Rd., Wongsa wang, Bangsue 10800, Bangkok, Thailand
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Reaction Kinetics, Mechanisms and Catalysis
Introduction One of the major causes of global warming is an increase in greenhouse gases (GHGs) emission. Carbon dioxide (CO2) emission has been significantly increasing during the last decades [1]. Various researches focus on two main approaches to solve such problem, which are carbon dioxide capture and storage (CCS) [2, 3], and carbon dioxide utilization [4–7]. For the second approach, methanation is one of the promising reactions for converting C O2 to methane as intermediate useful product. In this reaction, CO2 is hydrogenated with hydrogen (H2) giving methane (CH4) as a product. The reaction is useful for many chemical and petrochemical processes such as; biogas (CH4 + CO2) upgrading [8], where the C O2 in the biogas was converted to methane p
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