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Production of Jet Fuel-Range Hydrocarbons from Hydrodeoxygenation of Lignin over Super Lewis Acid Combined with Metal Catalysts

Journal Article · · ChemSusChem
 [1];  [2];  [3];  [3];  [1]
  1. Washington State Univ., Pullman, WA (United States)
  2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  3. National Renewable Energy Lab. (NREL), Golden, CO (United States)
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Super Lewis acids containing the triflate anion [e.g., Hf(OTf)4, Ln(OTf)3, In(OTf)3, Al(OTf)3] and noble metal catalysts (e.g., Ru/C, Ru/Al2O3) formed efficient catalytic systems to generate saturated hydrocarbons from lignin in high yields. In such catalytic systems, the metal triflates mediated rapid ether bond cleavage through selective bonding to etheric oxygens while the noble metal catalyzed subsequent hydrodeoxygenation (HDO) reactions. Near theoretical yields of hydrocarbons were produced from lignin model compounds by the combined catalysis of Hf(OTf)4 and ruthenium-based catalysts. When a technical lignin derived from a pilot-scale biorefinery was used, more than 30 wt % of the hydrocarbons produced with this catalytic system were cyclohexane and alkylcyclohexanes in the jet fuel range. Super Lewis acids are postulated to strongly interact with lignin substrates by protonating hydroxyl groups and ether linkages, forming intermediate species that enhance hydrogenation catalysis by supported noble metal catalysts. Meanwhile, the hydrogenation of aromatic rings by the noble metal catalysts can promote oxygenation reactions catalyzed by super Lewis acids.
Research Organization:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE; USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1411326
Alternate ID(s):
OSTI ID: 1409447
OSTI ID: 1419917
Report Number(s):
NREL/JA--5100-70587
Journal Information:
ChemSusChem, Journal Name: ChemSusChem Journal Issue: 1 Vol. 11; ISSN 1864-5631
Publisher:
ChemPubSoc EuropeCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (10)

Selective Hydrogenation and Hydrodeoxygenation of Aromatic Ketones to Cyclohexane Derivatives Using a Rh@SILP Catalyst journal May 2020
Selective Hydrogenation and Hydrodeoxygenation of Aromatic Ketones to Cyclohexane Derivatives Using a Rh@SILP Catalyst journal May 2020
Techno‐economic analysis of jet‐fuel production from biorefinery waste lignin journal December 2018
Biotransformation of lignin: Mechanisms, applications and future work journal October 2019
Effects of Sugars, Furans, and their Derivatives on Hydrodeoxygenation of Biorefinery Lignin‐Rich Wastes to Hydrocarbons journal July 2018
Tandem Hydrogenolysis–Hydrogenation of Lignin‐Derived Oxygenates over Integrated Dual Catalysts with Optimized Interoperations journal November 2019
Selective catalytic transformation of lignin with guaiacol as the only liquid product journal January 2020
Electrochemical Generation of ROS in Ionic Liquid for the Degradation of Lignin Model Compound journal January 2018
Selective Hydrogenation and Hydrodeoxygenation of Aromatic Ketones to Cyclohexane Derivatives Using a Rh@SILP Catalyst text January 2020
Valorization of Lignin as an Immobilizing Agent for Bioinoculant Production using Azospirillum brasilense as a Model Bacteria journal December 2019

Figures / Tables (5)

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Table 2(p. 4)table Table 2
Figure 2(p. 5)figure Figure 2
Figure 3(p. 5)figure Figure 3

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Related Subjects

09 BIOMASS FUELS
biomass conversion
fuels
hydrocarbons
hydrodeoxygenation
metal triflates