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Generation of syngas through autothermal partial oxidation of glycerol over LaMnO3- and LaNiO3-coated monoliths

Paper ID Volume ID Publish Year Pages File Format Full-Text
53977 46991 2014 9 PDF Available
Title
Generation of syngas through autothermal partial oxidation of glycerol over LaMnO3- and LaNiO3-coated monoliths
Abstract

•Glycerol autothermal partial oxidation over LaMnO3 and LaNiO3 perovskites.•LaMnO3 promotes glycerol combustion to carbon dioxide and water.•LaNiO3 enhances glycerol partial oxidation to syngas.•LaNiO3 is more active in steam reforming and water-gas shift than LaMnO3.•LaMnO3 has better stability than LaNiO3.

This study presents a side-by-side comparison of LaMnO3 and LaNiO3 perovskites in the autothermal partial oxidation of glycerol to syngas. Pure glycerol and glycerol/water solutions were converted to syngas under adiabatic conditions. The addition of water suppressed glycerol conversion and reaction temperature, but increased H2 selectivity with the appropriate steam-to-glycerol feed ratio. Catalytic results show that LaMnO3 is more active than LaNiO3 in autothermal partial oxidation because of its combustion-prone nature. In contrast, LaNiO3 produced higher H2 selectivity than LaMnO3 did. A comparative study of LaMnO3 and LaNiO3 in glycerol steam reforming and water-gas shift was performed as well to reveal how these H2-production reactions proceed in the oxygen-deficient regime of a catalyst bed. The outcomes indicate that LaNiO3 is more active than LaMnO3 in these two reactions, thereby enhancing H2 selectivity in a partial oxidation system. Moreover, a 24-h lifetime test of these two perovskites was conducted, showing that LaMnO3 has greater durability.

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Keywords
Glycerol; Partial oxidation; Autothermal; Perovskite; Syngas
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Generation of syngas through autothermal partial oxidation of glycerol over LaMnO3- and LaNiO3-coated monoliths
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 237, 15 November 2014, Pages 62–70
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us