Effective hydrodeoxygenation of lignin-derived phenols using bimetallic RuRe catalysts: Effect of carbon supports

Kyung Bin Jung, Jinho Lee, Jeong Myeong Ha, Hyunjoo Lee, Dong Jin Suh, Chul-Ho Jun, Jungho Jae

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

We have previously shown that an activated carbon-supported ruthenium catalyst promoted with ReO x (RuRe/AC) is highly active for the hydrodeoxygenation (HDO) of lignin-derived phenols (e.g., guaiacol). In this work, we have investigated the effect of carbon supports on the structure and HDO activity of bimetallic RuRe particles using three different carbon supports, i.e., activated carbon (AC), carbon black (Vulcan carbon, VC), multi-walled carbon nanotube (MWCNT). The MWCNT- and VC-supported catalysts show remarkably enhanced activity and hydrocarbon selectivity for the HDO of a range of phenolic molecules (i.e., guaiacol, eugenol, benzyl phenyl ether) compared to RuRe/AC. STEM-EDS and XPS analyses reveal that bimetallic RuRe particles are more common than monometallic Ru or Re particles in the VC- and MWCNT-supported catalysts, and hexavalent rhenium species are more easily reduced to tetravalent rhenium during the HDO reactions in these catalysts, suggesting that Ru and Re in close proximity are required for the efficient hydrogenolysis of phenols. The formation of bimetallic particles on the AC surface is likely hindered by high microporosity and high surface oxygen functionalities, both of which restrict the mobility of Re and Ru for assembly.

Original languageEnglish
Pages (from-to)191-199
Number of pages9
JournalCatalysis Today
Volume303
DOIs
Publication statusPublished - 2018 Apr 1

Fingerprint

Lignin
Phenols
Catalyst supports
Activated carbon
Carbon
Carbon Nanotubes
Catalysts
Rhenium
Guaiacol
Carbon nanotubes
Soot
Eugenol
Microporosity
Hydrogenolysis
Ruthenium
Catalyst selectivity
Hydrocarbons
Carbon black
Energy dispersive spectroscopy
Ethers

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

Cite this

Jung, Kyung Bin ; Lee, Jinho ; Ha, Jeong Myeong ; Lee, Hyunjoo ; Suh, Dong Jin ; Jun, Chul-Ho ; Jae, Jungho. / Effective hydrodeoxygenation of lignin-derived phenols using bimetallic RuRe catalysts : Effect of carbon supports. In: Catalysis Today. 2018 ; Vol. 303. pp. 191-199.
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Effective hydrodeoxygenation of lignin-derived phenols using bimetallic RuRe catalysts : Effect of carbon supports. / Jung, Kyung Bin; Lee, Jinho; Ha, Jeong Myeong; Lee, Hyunjoo; Suh, Dong Jin; Jun, Chul-Ho; Jae, Jungho.

In: Catalysis Today, Vol. 303, 01.04.2018, p. 191-199.

Research output: Contribution to journalArticle

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AU - Jung, Kyung Bin

AU - Lee, Jinho

AU - Ha, Jeong Myeong

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AU - Suh, Dong Jin

AU - Jun, Chul-Ho

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