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Title: Mixed Alcohol Synthesis Catalyst Screening

Abstract

National Renewable Energy Laboratory (NREL) and Pacific Northwest National Laboratory (PNNL) are conducting research to investigate the feasibility of producing mixed alcohols from biomass-derived synthesis gas (syngas). PNNL is tasked with obtaining commercially available or preparing promising mixed-alcohol catalysts and screening them in a laboratory-scale reactor system. Commercially available catalysts and the most promising experimental catalysts are provided to NREL for testing using a slipstream from a pilot-scale biomass gasifier. From the standpoint of producing C2+ alcohols as the major product, it appears that the rhodium catalyst is the best choice in terms of both selectivity and space-time yield (STY). However, unless the rhodium catalyst can be improved to provide minimally acceptable STYs for commercial operation, mixed alcohol synthesis will involve significant production of other liquid coproducts. The modified Fischer-Tropsch catalyst shows the most promise for providing both an acceptable selectivity to C2+ alcohols and total liquid STY. However, further optimization of the Fischer-Tropsch catalysts to improve selectivity to higher alcohols is highly desired. Selection of a preferred catalyst will likely entail a decision on the preferred coproduct slate. No other catalysts tested appear amenable to the significant improvements needed for acceptable STYs.

Authors:
; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
926119
Report Number(s):
PNNL-16763
BM0101010; TRN: US200807%%595
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; 14 SOLAR ENERGY; ALCOHOLS; BIOMASS; CATALYSTS; NATIONAL RENEWABLE ENERGY LABORATORY; OPTIMIZATION; PRODUCTION; RHODIUM; SPACE-TIME; SYNTHESIS; SYNTHESIS GAS; TESTING

Citation Formats

Gerber, Mark A, White, James F, and Stevens, Don J. Mixed Alcohol Synthesis Catalyst Screening. United States: N. p., 2007. Web. doi:10.2172/926119.
Gerber, Mark A, White, James F, & Stevens, Don J. Mixed Alcohol Synthesis Catalyst Screening. United States. doi:10.2172/926119.
Gerber, Mark A, White, James F, and Stevens, Don J. Mon . "Mixed Alcohol Synthesis Catalyst Screening". United States. doi:10.2172/926119. https://www.osti.gov/servlets/purl/926119.
@article{osti_926119,
title = {Mixed Alcohol Synthesis Catalyst Screening},
author = {Gerber, Mark A and White, James F and Stevens, Don J},
abstractNote = {National Renewable Energy Laboratory (NREL) and Pacific Northwest National Laboratory (PNNL) are conducting research to investigate the feasibility of producing mixed alcohols from biomass-derived synthesis gas (syngas). PNNL is tasked with obtaining commercially available or preparing promising mixed-alcohol catalysts and screening them in a laboratory-scale reactor system. Commercially available catalysts and the most promising experimental catalysts are provided to NREL for testing using a slipstream from a pilot-scale biomass gasifier. From the standpoint of producing C2+ alcohols as the major product, it appears that the rhodium catalyst is the best choice in terms of both selectivity and space-time yield (STY). However, unless the rhodium catalyst can be improved to provide minimally acceptable STYs for commercial operation, mixed alcohol synthesis will involve significant production of other liquid coproducts. The modified Fischer-Tropsch catalyst shows the most promise for providing both an acceptable selectivity to C2+ alcohols and total liquid STY. However, further optimization of the Fischer-Tropsch catalysts to improve selectivity to higher alcohols is highly desired. Selection of a preferred catalyst will likely entail a decision on the preferred coproduct slate. No other catalysts tested appear amenable to the significant improvements needed for acceptable STYs.},
doi = {10.2172/926119},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2007},
month = {9}
}

Technical Report:

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