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Title: Acetic Acid/Propionic Acid Conversion on Metal Doped Molybdenum Carbide Catalyst Beads for Catalytic Hot Gas Filtration

Abstract

Catalytic hot gas filtration (CHGF) is used to precondition biomass derived fast pyrolysis (FP) vapors by physically removing reactive char and alkali particulates and chemically converting reactive oxygenates to species that are more easily upgraded during subsequent catalytic fast pyrolysis (CFP). Carboxylic acids, such as acetic acid and propionic acid, form during biomass fast pyrolysis and are recalcitrant to downstream catalytic vapor upgrading. This work developed and evaluated catalysts that can convert these acids to more upgradeable ketones at the laboratory scale. Selective catalytic conversion of these reactive oxygenates to more easily upgraded compounds can enhance bio-refinery processing economics through catalyst preservation by reduced coking from acid cracking, by preserving carbon efficiency, and through process intensification by coupling particulate removal with partial upgrading. Two metal-doped molybdenum carbide (Mo 2C) supported catalyst beads were synthesized and evaluated and their performance compared with an undoped Mo 2C control catalyst beads. For laboratory scale acetic acid conversion, calcium doped Mo2C supported catalyst beads produced the highest yield of acetone at ~96% at 450 °C among undoped and Ca or Ni doped catalysts.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1485170
Alternate Identifier(s):
OSTI ID: 1486931
Grant/Contract Number:  
AC05-00OR22725; WBS2.5.5.507
Resource Type:
Published Article
Journal Name:
Catalysts
Additional Journal Information:
Journal Volume: 8; Journal Issue: 12; Journal ID: ISSN 2073-4344
Publisher:
MDPI
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Lu, Mi, Lepore, Andrew, Choi, Jae-Soon, Li, Zhenglong, Wu, Zili, Polo-Garzon, Felipe, and Hu, Michael. Acetic Acid/Propionic Acid Conversion on Metal Doped Molybdenum Carbide Catalyst Beads for Catalytic Hot Gas Filtration. United States: N. p., 2018. Web. doi:10.3390/catal8120643.
Lu, Mi, Lepore, Andrew, Choi, Jae-Soon, Li, Zhenglong, Wu, Zili, Polo-Garzon, Felipe, & Hu, Michael. Acetic Acid/Propionic Acid Conversion on Metal Doped Molybdenum Carbide Catalyst Beads for Catalytic Hot Gas Filtration. United States. doi:10.3390/catal8120643.
Lu, Mi, Lepore, Andrew, Choi, Jae-Soon, Li, Zhenglong, Wu, Zili, Polo-Garzon, Felipe, and Hu, Michael. Sun . "Acetic Acid/Propionic Acid Conversion on Metal Doped Molybdenum Carbide Catalyst Beads for Catalytic Hot Gas Filtration". United States. doi:10.3390/catal8120643.
@article{osti_1485170,
title = {Acetic Acid/Propionic Acid Conversion on Metal Doped Molybdenum Carbide Catalyst Beads for Catalytic Hot Gas Filtration},
author = {Lu, Mi and Lepore, Andrew and Choi, Jae-Soon and Li, Zhenglong and Wu, Zili and Polo-Garzon, Felipe and Hu, Michael},
abstractNote = {Catalytic hot gas filtration (CHGF) is used to precondition biomass derived fast pyrolysis (FP) vapors by physically removing reactive char and alkali particulates and chemically converting reactive oxygenates to species that are more easily upgraded during subsequent catalytic fast pyrolysis (CFP). Carboxylic acids, such as acetic acid and propionic acid, form during biomass fast pyrolysis and are recalcitrant to downstream catalytic vapor upgrading. This work developed and evaluated catalysts that can convert these acids to more upgradeable ketones at the laboratory scale. Selective catalytic conversion of these reactive oxygenates to more easily upgraded compounds can enhance bio-refinery processing economics through catalyst preservation by reduced coking from acid cracking, by preserving carbon efficiency, and through process intensification by coupling particulate removal with partial upgrading. Two metal-doped molybdenum carbide (Mo2C) supported catalyst beads were synthesized and evaluated and their performance compared with an undoped Mo2C control catalyst beads. For laboratory scale acetic acid conversion, calcium doped Mo2C supported catalyst beads produced the highest yield of acetone at ~96% at 450 °C among undoped and Ca or Ni doped catalysts.},
doi = {10.3390/catal8120643},
journal = {Catalysts},
number = 12,
volume = 8,
place = {United States},
year = {2018},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.3390/catal8120643

Figures / Tables:

Figure 1 Figure 1: Product selectivity and propionic acid conversion over three types of carbide pellet catalysts after pretreatment with 10% H2 at 500 °C for 2 h: (A) Mo2C, 4 h time on stream (TOS); (B) Ni-Mo2C, 4 h TOS; (C) Ca-Mo2C, 4 h TOS, but the final injection was takenmore » after running the reaction for 12 h; (D) yield of products at 450 °C over three types of carbide catalysts.« less

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.