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Catalytic performance and characterization of Co/Mg/Al catalysts prepared from hydrotalcite-like precursors for the steam gasification of biomass

Paper ID Volume ID Publish Year Pages File Format Full-Text
45912 46427 2014 11 PDF Available
Title
Catalytic performance and characterization of Co/Mg/Al catalysts prepared from hydrotalcite-like precursors for the steam gasification of biomass
Abstract

•The optimized Co/Mg/Al showed high activity and resistance to coke.•The Co/Mg/Al was higher catalytic activity and regeneration ability than Ni/Mg/Al.•The Co/Mg/Al has a nanocomposite structure of Co metal and MgAl2O4-based solid.•The structure change of MgAl2O4-based solid solution can cause catalyst deactivation.

The Co/Mg/Al catalysts were prepared from the hydrotalcite-like compounds containing Co, Mg and Al, and applied to the steam gasification of biomass. It is found that the Co/Mg/Al (10/40/50) catalyst exhibited much higher activity and resistance to coke deposition than Co/α-Al2O3, Co/Al, Co/Mg and Ni/Mg/Al (9/66/25) catalysts. The catalyst characterization using BET, TPR, TPO, XRD, H2 adsorption, and TEM indicates that the Co/Mg/Al (10/40/50) catalyst after the reduction has a nanocomposite structure of Co metal particles (∼14 nm) and oxide particles (∼16 nm) of MgAl2O4-based solid solution. On the other hand, according to the catalyst characterization after the catalytic use and regeneration, the structural change of MgAl2O4-based solid solution to MgO-based solid solution can be a cause of the decrease of the catalytic activity.

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Keywords
Cobalt; Hydrotalcite; Steam gasification; Biomass; Tar
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Catalytic performance and characterization of Co/Mg/Al catalysts prepared from hydrotalcite-like precursors for the steam gasification of biomass
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volumes 150–151, 5 May 2014, Pages 82–92
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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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