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Title: Catalytic Hydroprocessing of Chemical Models for Bio-oil

Abstract

Bio-oil (product liquids from fast pyrolysis of biomass) is a complex mixture of oxygenates derived from the thermal breakdown of the bio-polymers in biomass. In the case of lignocellulosic biomass, the structures of three major components, cellulose, hemicellulose and lignin, are well represented by the bio-oil components. In order to study the chemical mechanisms of catalytic hydroprocessing of bio-oil, three model compounds were chosen to represent those components. Guaiacol represents the large number of mono- and di-methoxy phenols found in bio-oil derived from softwood or hardwood, respectively. Furfural represents a major pyrolysis product group from cellulosics. Acetic acid is a major product from biomass pyrolysis, derived from the hemicellulose, which has important impacts on the further processing of the bio-oil because of the acidic character. These three compounds were processed using palladium or ruthenium catalyst over a temperature range from 150°C to 300°C. The batch reactor was sampled during each test over a period of four hours. The samples were analyzed by gas chromatography with both a mass selective detector and a flame ionization detector. The products were determined and the reaction pathways for their formation are suggested based on these results. Both temperature and catalyst metal have significant effectsmore » on the product composition.« less

Authors:
 [1];  [1]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
Sponsoring Org.:
USDOE
OSTI Identifier:
950153
Report Number(s):
PNNL-SA-62416
Journal ID: ISSN 0887-0624; ENFUEM; 6093; BM0101010; TRN: US200910%%97
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Energy and Fuels
Additional Journal Information:
Journal Volume: 23; Journal Issue: 2; Journal ID: ISSN 0887-0624
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; ACETIC ACID; BIOMASS; BREAKDOWN; CATALYSTS; CELLULOSE; FLAMES; FURFURAL; GAS CHROMATOGRAPHY; HEMICELLULOSE; IONIZATION; LIGNIN; MIXTURES; PALLADIUM; PHENOLS; PYROLYSIS; PYROLYSIS PRODUCTS; RUTHENIUM; hydrogenation; catalysis; bio-oil; biomass; pyrolysis; Environmental Molecular Sciences Laboratory

Citation Formats

Elliott, Douglas C., and Hart, Todd R. Catalytic Hydroprocessing of Chemical Models for Bio-oil. United States: N. p., 2008. Web. doi:10.1021/ef8007773.
Elliott, Douglas C., & Hart, Todd R. Catalytic Hydroprocessing of Chemical Models for Bio-oil. United States. https://doi.org/10.1021/ef8007773
Elliott, Douglas C., and Hart, Todd R. 2008. "Catalytic Hydroprocessing of Chemical Models for Bio-oil". United States. https://doi.org/10.1021/ef8007773.
@article{osti_950153,
title = {Catalytic Hydroprocessing of Chemical Models for Bio-oil},
author = {Elliott, Douglas C. and Hart, Todd R.},
abstractNote = {Bio-oil (product liquids from fast pyrolysis of biomass) is a complex mixture of oxygenates derived from the thermal breakdown of the bio-polymers in biomass. In the case of lignocellulosic biomass, the structures of three major components, cellulose, hemicellulose and lignin, are well represented by the bio-oil components. In order to study the chemical mechanisms of catalytic hydroprocessing of bio-oil, three model compounds were chosen to represent those components. Guaiacol represents the large number of mono- and di-methoxy phenols found in bio-oil derived from softwood or hardwood, respectively. Furfural represents a major pyrolysis product group from cellulosics. Acetic acid is a major product from biomass pyrolysis, derived from the hemicellulose, which has important impacts on the further processing of the bio-oil because of the acidic character. These three compounds were processed using palladium or ruthenium catalyst over a temperature range from 150°C to 300°C. The batch reactor was sampled during each test over a period of four hours. The samples were analyzed by gas chromatography with both a mass selective detector and a flame ionization detector. The products were determined and the reaction pathways for their formation are suggested based on these results. Both temperature and catalyst metal have significant effects on the product composition.},
doi = {10.1021/ef8007773},
url = {https://www.osti.gov/biblio/950153}, journal = {Energy and Fuels},
issn = {0887-0624},
number = 2,
volume = 23,
place = {United States},
year = {Fri Dec 12 00:00:00 EST 2008},
month = {Fri Dec 12 00:00:00 EST 2008}
}