Hydrodeoxygenation of 4-methylguaiacol over silica-supported nickel phosphide catalysts: The particle size effect

Pei Ju Hsu, Yu Chuan Lin

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Lignin is a natural-made heteroaromatic polymer, which can be transformed into bio-based aromatics. Catalytic hydrodeoxygenation (HDO) depolymerizes lignin through selective oxygen extraction. This study investigated HDO of 4-methylguaiacol, a lignin model compound, over silica-supported nickel phosphide catalysts with controlled scale of active site. Catalyst characterizations, including N2 physisorption, ICP, XRD, TEM, XPS, H2-TPR, NH3-TPD, CO chemisorption, CO-TPD, and H2-TPD, were performed. HDO of 4-methylguaiacol was conducted in a H2-pressured, batch-type reactor, and the reaction network was proposed. The H2 uptake of Ni2P was discovered to play a key role in mediating reaction routes such as demethoxylation and hydrogenation in the reaction network. Therefore, nickel phosphide catalyst is deemed to have particle size effect in 4-methylguaiacol HDO.

Original languageEnglish
Pages (from-to)80-87
Number of pages8
JournalJournal of the Taiwan Institute of Chemical Engineers
Volume79
DOIs
Publication statusPublished - 2017 Oct

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Lignin
Temperature programmed desorption
Nickel
Silicon Dioxide
Particle size
Silica
Carbon Monoxide
Catalysts
Physisorption
Chemisorption
Hydrogenation
Polymers
X ray photoelectron spectroscopy
Oxygen
Transmission electron microscopy
creosol

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

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title = "Hydrodeoxygenation of 4-methylguaiacol over silica-supported nickel phosphide catalysts: The particle size effect",
abstract = "Lignin is a natural-made heteroaromatic polymer, which can be transformed into bio-based aromatics. Catalytic hydrodeoxygenation (HDO) depolymerizes lignin through selective oxygen extraction. This study investigated HDO of 4-methylguaiacol, a lignin model compound, over silica-supported nickel phosphide catalysts with controlled scale of active site. Catalyst characterizations, including N2 physisorption, ICP, XRD, TEM, XPS, H2-TPR, NH3-TPD, CO chemisorption, CO-TPD, and H2-TPD, were performed. HDO of 4-methylguaiacol was conducted in a H2-pressured, batch-type reactor, and the reaction network was proposed. The H2 uptake of Ni2P was discovered to play a key role in mediating reaction routes such as demethoxylation and hydrogenation in the reaction network. Therefore, nickel phosphide catalyst is deemed to have particle size effect in 4-methylguaiacol HDO.",
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T2 - The particle size effect

AU - Hsu, Pei Ju

AU - Lin, Yu Chuan

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N2 - Lignin is a natural-made heteroaromatic polymer, which can be transformed into bio-based aromatics. Catalytic hydrodeoxygenation (HDO) depolymerizes lignin through selective oxygen extraction. This study investigated HDO of 4-methylguaiacol, a lignin model compound, over silica-supported nickel phosphide catalysts with controlled scale of active site. Catalyst characterizations, including N2 physisorption, ICP, XRD, TEM, XPS, H2-TPR, NH3-TPD, CO chemisorption, CO-TPD, and H2-TPD, were performed. HDO of 4-methylguaiacol was conducted in a H2-pressured, batch-type reactor, and the reaction network was proposed. The H2 uptake of Ni2P was discovered to play a key role in mediating reaction routes such as demethoxylation and hydrogenation in the reaction network. Therefore, nickel phosphide catalyst is deemed to have particle size effect in 4-methylguaiacol HDO.

AB - Lignin is a natural-made heteroaromatic polymer, which can be transformed into bio-based aromatics. Catalytic hydrodeoxygenation (HDO) depolymerizes lignin through selective oxygen extraction. This study investigated HDO of 4-methylguaiacol, a lignin model compound, over silica-supported nickel phosphide catalysts with controlled scale of active site. Catalyst characterizations, including N2 physisorption, ICP, XRD, TEM, XPS, H2-TPR, NH3-TPD, CO chemisorption, CO-TPD, and H2-TPD, were performed. HDO of 4-methylguaiacol was conducted in a H2-pressured, batch-type reactor, and the reaction network was proposed. The H2 uptake of Ni2P was discovered to play a key role in mediating reaction routes such as demethoxylation and hydrogenation in the reaction network. Therefore, nickel phosphide catalyst is deemed to have particle size effect in 4-methylguaiacol HDO.

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