Catalytic Hydrodeoxygenation and Dealkylation of a Lignin Model Compound

Matthew Ratcliff, Fannie Posey, Helena Li Chum

Research output: Contribution to conferencePaperpeer-review

7 Scopus Citations

Abstract

A comparison is presented of the hydrotreatment of 4-propylguaiacol (4PG) exploring two catalysts: MoS//2 on gamma -alumina and the dual functionality MoS//2/NiS on phosphated gamma -alumina at 250 degree -450 degree C and 500 psig of hydrogen. The catalyst with acidic support was found to promote substantial dealkylation of 4PG into a number of alkylated phenols such as methyl- (predominantly meta- and para-), ethyl-, and methylpropylphenols. The main reaction product on the less acidic catalyst was 4-propylphenol. At 350 degree C, mild deoxygenation to phenols can be maximized, whereas higher temperatures favor the formation of hydrocarbons, aromatic and saturated. Higher space velocities also favor mild deoxygenation to phenols. These studies are relevant to the conversion of lignins into phenolic compounds. Transformation of phenols into methyl aryl ethers produces a suitable gasoline octane enhancer and extender.

Original languageAmerican English
Pages249-256
Number of pages8
StatePublished - 1987
EventProduction, Analysis and Upgrading of Oils from Biomass, Volume 32, No. 2 - Denver, Colorado
Duration: 5 Apr 198710 Apr 1987

Conference

ConferenceProduction, Analysis and Upgrading of Oils from Biomass, Volume 32, No. 2
CityDenver, Colorado
Period5/04/8710/04/87

NREL Publication Number

  • ACNR/CP-234-8587

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