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CO 2 Methanation in Microstructured Reactors – Catalyst Development and Process Design
Author(s) -
Neuberg Stefan,
Pennemann Helmut,
Shanmugam Vetrivel,
Thiermann Raphael,
Zapf Ralf,
Gac Wojciech,
Greluk Magdalena,
Zawadzki Witold,
Kolb Gunther
Publication year - 2019
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201900132
Subject(s) - methanation , catalysis , bimetallic strip , microreactor , materials science , chemical engineering , pilot plant , selectivity , ruthenium , heat exchanger , biogas , chemistry , waste management , organic chemistry , thermodynamics , physics , engineering
The sulfur tolerance of mono‐ and bimetallic ruthenium catalysts for CO 2 hydrogenation was investigated in microchannel reactors. H 2 S was selected as a model compound. It was found that a Ru/CeO 2 catalyst deactivates rapidly. Ni was a much better additive to improve the catalyst stability compared to Rh and serves as a sulfur trap. The influence of the support was evaluated showing that a SiO 2 ‐supported catalyst has a higher stability and better selectivity compared to CeO 2 and TiO 2 . A plant concept was developed comprising two‐step methanation with a first adiabatic reactor stage followed by a plate heat‐exchanger reactor with integrated cooling which allows more than 97 % CO 2 conversion. A pilot plant will be put into operation in connection with a biogas plant and an electrolyser of 50 kW power consumption.
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