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Title: Methanation of carbon dioxide by hydrogen reduction using the Sabatier process in microchannel reactors

Abstract

This paper describes the development of a microchannel-based Sabatier reactor for applications such as propellant production on Mars or space habitat air revitalization. Microchannel designs offer advantages for a compact reactor with excellent thermal control. This paper discusses the development of a Ru-TiO2 based catalyst using powdered form and its application and testing in a microchannel reactor. The resultant catalyst and microchannel reactor demonstrates good conversion, selectivity, and longevity in a compact device. A chemically reacting flow model is used to assist experimental interpretation and to suggest microchannel design approaches. A kinetic rate expression for the global Sabatier reaction is developed and validated using computational models to interpret packed-bed experiments with catalysts in powder form. The resulting global reaction is then incorporated into a reactive plug-flow model that considers flow within a microchannel reactor.

Authors:
; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org.:
USDOE
OSTI Identifier:
901461
Report Number(s):
PNWD-SA-7455
Journal ID: ISSN 0009-2509; CESCAC; 5109; TRN: US200714%%55
DOE Contract Number:
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Chemical Engineering Science, 62(4):1161-1170; Journal Volume: 62; Journal Issue: 4
Country of Publication:
United States
Language:
English
Subject:
08 HYDROGEN; 10 SYNTHETIC FUELS; AIR; CARBON DIOXIDE; CATALYSTS; DESIGN; FLOW MODELS; HABITAT; HYDROGEN; KINETICS; METHANATION; PRODUCTION; TESTING; Sabatier process, CO2 reduction, Ru-TiO2 catalyst, Microchannel reactor; Environmental Molecular Sciences Laboratory

Citation Formats

Brooks, Kriston P., Hu, Jianli, Zhu, Huayang, and Kee, Robert. Methanation of carbon dioxide by hydrogen reduction using the Sabatier process in microchannel reactors. United States: N. p., 2007. Web. doi:10.1016/j.ces.2006.11.020.
Brooks, Kriston P., Hu, Jianli, Zhu, Huayang, & Kee, Robert. Methanation of carbon dioxide by hydrogen reduction using the Sabatier process in microchannel reactors. United States. doi:10.1016/j.ces.2006.11.020.
Brooks, Kriston P., Hu, Jianli, Zhu, Huayang, and Kee, Robert. Thu . "Methanation of carbon dioxide by hydrogen reduction using the Sabatier process in microchannel reactors". United States. doi:10.1016/j.ces.2006.11.020.
@article{osti_901461,
title = {Methanation of carbon dioxide by hydrogen reduction using the Sabatier process in microchannel reactors},
author = {Brooks, Kriston P. and Hu, Jianli and Zhu, Huayang and Kee, Robert},
abstractNote = {This paper describes the development of a microchannel-based Sabatier reactor for applications such as propellant production on Mars or space habitat air revitalization. Microchannel designs offer advantages for a compact reactor with excellent thermal control. This paper discusses the development of a Ru-TiO2 based catalyst using powdered form and its application and testing in a microchannel reactor. The resultant catalyst and microchannel reactor demonstrates good conversion, selectivity, and longevity in a compact device. A chemically reacting flow model is used to assist experimental interpretation and to suggest microchannel design approaches. A kinetic rate expression for the global Sabatier reaction is developed and validated using computational models to interpret packed-bed experiments with catalysts in powder form. The resulting global reaction is then incorporated into a reactive plug-flow model that considers flow within a microchannel reactor.},
doi = {10.1016/j.ces.2006.11.020},
journal = {Chemical Engineering Science, 62(4):1161-1170},
number = 4,
volume = 62,
place = {United States},
year = {Thu Feb 01 00:00:00 EST 2007},
month = {Thu Feb 01 00:00:00 EST 2007}
}
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