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Vapor phase hydrogenation of furfural over nickel mixed metal oxide catalysts derived from layered double hydroxides

Paper ID Volume ID Publish Year Pages File Format Full-Text
39105 45806 2016 9 PDF Available
Title
Vapor phase hydrogenation of furfural over nickel mixed metal oxide catalysts derived from layered double hydroxides
Abstract

•Furfural hydrogenation was investigated utilizing non-precious mixed metal oxides (Ni-Co-Al and Ni-Mg-Al).•Furfuryl alcohol selectivity of ∼80% was achieved for all catalysts tested, but 1.1Ni-0.8Co-Al had the highest TOF (1690 h−1).•XAS, XPS, and STEM suggested the formation of bimetallic nanoparticles of Ni and Co after reduction.

The hydrogenation of furfural is investigated over various reduced nickel mixed metal oxides derived from layered double hydroxides (LDHs) containing Ni-Mg-Al and Ni-Co-Al. Upon reduction, relatively large Ni(0) domains develop in the Ni-Mg-Al catalysts, whereas in the Ni-Co-Al catalysts smaller metal particles of Ni(0) and Co(0), potentially as alloys, are formed, as evidenced by XAS, XPS, STEM and EELS. All the reduced Ni catalysts display similar selectivities towards major hydrogenation products (furfuryl alcohol and tetrahydrofurfuryl alcohol), though the side products varied with the catalyst composition. The 1.1Ni-0.8Co-Al catalyst showed the greatest activity per titrated site when compared to the other catalysts, with promising activity compared to related catalysts in the literature. The use of base metal catalysts for hydrogenation of furanic compounds may be a promising alternative to the well-studied precious metal catalysts for making biomass-derived chemicals if catalyst selectivity can be improved in future work by alloying or tuning metal-oxide support interactions

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Keywords
Biomass; Furfural; Hydrogenation; Layered double hydroxide; Mixed metal oxide; Cobalt
First Page Preview
Vapor phase hydrogenation of furfural over nickel mixed metal oxide catalysts derived from layered double hydroxides
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 517, 5 May 2016, Pages 187–195
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis