Catalyst and feedstock effects in the thermochemical conversion of biomass to liquid transportation fuels

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The thermochemical conversion of biomass feedstocks to liquid transportation fuels can be accomplished by three processes, namely gasification, high-pressure liquefaction, and pyrolysis. In this study, the pyrolysis option is selected which is followed by the catalytic upgrading of pyrolysis vapors to aromatic and olefinic hydrocarbons (PYROCAT process). The aromatics constitute a high-octane gasoline blend, while the olefins can be utilized as feedstocks for various chemicals. The PYROCAT process has been studied in a laboratory-scale fixed-bed catalytic reactor. Consecutive biomass samples were pyrolyzed rapidly in steam at 550{degree}C and atmospheric pressure, and then the pyrolysis vapors were passed over a zeolite ... continued below

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Rejai, B.; Agblevor, F.A.; Evans, R.J. & Wang, D. May 1, 1992.

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The thermochemical conversion of biomass feedstocks to liquid transportation fuels can be accomplished by three processes, namely gasification, high-pressure liquefaction, and pyrolysis. In this study, the pyrolysis option is selected which is followed by the catalytic upgrading of pyrolysis vapors to aromatic and olefinic hydrocarbons (PYROCAT process). The aromatics constitute a high-octane gasoline blend, while the olefins can be utilized as feedstocks for various chemicals. The PYROCAT process has been studied in a laboratory-scale fixed-bed catalytic reactor. Consecutive biomass samples were pyrolyzed rapidly in steam at 550{degree}C and atmospheric pressure, and then the pyrolysis vapors were passed over a zeolite catalyst. The catalytic upgrading products were monitored in real-time using molecular-beam mass-spectrometry (MBMS). The yields of major products were estimated from mass-spectral data. Several zeolite catalysts were screened in the upgrading process and promising catalysts with high yields were identified. Feedstocks studied included: the woody biomass species aspen (Populus tremuloides), basswood (Tilia americana), and willow (Salix alba); the three isolated components of wood lignin, xylan and cellulose; and the herbaceous species bagasse (Saccharum spp. hybrid), wheat straw (Triticum aestivum), and Sericea lespedeza (Lespedeza cuneata). 17 refs.

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Pages: (5 p)

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OSTI; NTIS; GPO Dep.

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  • National solar energy conference, Cocoa Beach, FL (United States), 13-18 Jun 1992

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  • Other: DE92010569
  • Report No.: NREL/TP-431-4831
  • Report No.: CONF-920678--7
  • Grant Number: AC02-83CH10093
  • Office of Scientific & Technical Information Report Number: 5305775
  • Archival Resource Key: ark:/67531/metadc1069279

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  • May 1, 1992

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  • Feb. 4, 2018, 10:51 a.m.

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  • May 29, 2018, 4:54 p.m.

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Rejai, B.; Agblevor, F.A.; Evans, R.J. & Wang, D. Catalyst and feedstock effects in the thermochemical conversion of biomass to liquid transportation fuels, article, May 1, 1992; Golden, Colorado. (digital.library.unt.edu/ark:/67531/metadc1069279/: accessed November 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.