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Title: Supported molybdenum oxides as effective catalysts for the catalytic fast pyrolysis of lignocellulosic biomass

Journal Article · · Green Chemistry
DOI:https://doi.org/10.1039/C6GC01189F· OSTI ID:1331478
 [1];  [2];  [2];  [1]; ORCiD logo [2];  [1]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Chemical Engineering
  2. National Renewable Energy Lab. (NREL), Golden, CO (United States)

The catalytic fast pyrolysis (CFP) of pine was investigated over 10 wt% MoO3/TiO2 and MoO3/ZrO2 at 500 °C and H2 pressures ≤ 0.75 bar. The product distributions were monitored in real time using a molecular beam mass spectrometer (MBMS). Both supported MoO3 catalysts show different levels of deoxygenation based on the cumulative biomass to MoO3 mass ratio exposed to the catalytic bed. For biomass to MoO3 mass ratios <1.5, predominantly olefinic and aromatic hydrocarbons are produced with no detectable oxygen-containing species. For ratios ≥ 1.5, partially deoxygenated species comprised of furans and phenols are observed, with a concomitant decrease of olefinic and aromatic hydrocarbons. For ratios ≥ 5, primary pyrolysis vapours break through the bed, indicating the onset of catalyst deactivation. Product quantification with a tandem micropyrolyzer-GCMS setup shows that fresh supported MoO3 catalysts convert ca. 27 mol% of the original carbon into hydrocarbons comprised predominantly of aromatics (7 C%), olefins (18 C%) and paraffins (2 C%), comparable to the total hydrocarbon yield obtained with HZSM-5 operated under similar reaction conditions. In conclusion, post-reaction XPS analysis on supported MoO3/ZrO2 and MoO3/TiO2 catalysts reveal that ca. 50% of Mo surface species exist in their partially reduced forms (i.e., Mo5+ and Mo3+), and that catalyst deactivation is likely associated to coking.

Research Organization:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Bioenergy Technologies Office; National Science Foundation (NSF)
Grant/Contract Number:
AC36-08GO28308; 1454299
OSTI ID:
1331478
Report Number(s):
NREL/JA-5100-66785; GRCHFJ
Journal Information:
Green Chemistry, Vol. 18, Issue 20; ISSN 1463-9262
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 63 works
Citation information provided by
Web of Science

References (41)

Bio-oil production from fast pyrolysis of waste furniture sawdust in a fluidized bed journal January 2010
Jute stick pyrolysis for bio-oil production in fluidized bed reactor journal January 2008
Bench-Scale Fluidized-Bed Pyrolysis of Switchgrass for Bio-Oil Production journal March 2007
Recent Advances in Hydrotreating of Pyrolysis Bio-Oil and Its Oxygen-Containing Model Compounds journal April 2013
Overview of Applications of Biomass Fast Pyrolysis Oil journal March 2004
Validation of a new set-up for continuous catalytic fast pyrolysis of biomass coupled with vapour phase upgrading journal September 2013
Recent advances in heterogeneous catalysts for bio-oil upgrading via “ex situ catalytic fast pyrolysis”: catalyst development through the study of model compounds journal January 2014
Catalytic fast pyrolysis of lignocellulosic biomass journal January 2014
A review on ex situ catalytic fast pyrolysis of biomass journal August 2014
Comparison of non-catalytic and catalytic fast pyrolysis of corncob in a fluidized bed reactor journal February 2009
Techno-economic and uncertainty analysis of in situ and ex situ fast pyrolysis for biofuel production journal November 2015
Real-time monitoring of the deactivation of HZSM-5 during upgrading of pine pyrolysis vapors journal January 2014
Production of hydrocarbons by catalytic upgrading of a fast pyrolysis bio-oil. Part I: Conversion over various catalysts journal December 1995
Investigation into the shape selectivity of zeolite catalysts for biomass conversion journal April 2011
Screening acidic zeolites for catalytic fast pyrolysis of biomass and its components journal September 2011
Screening heterogeneous catalysts for the pyrolysis of lignin journal May 2009
Upgrading biomass pyrolysis vapors over β-zeolites: role of silica-to-alumina ratio journal January 2014
Review of fast pyrolysis of biomass and product upgrading journal March 2012
Catalytic conversion of biomass-derived feedstocks into olefins and aromatics with ZSM-5: the hydrogen to carbon effective ratio journal January 2011
Aromatic Production from Catalytic Fast Pyrolysis of Biomass-Derived Feedstocks journal January 2009
Production of Renewable Aromatic Compounds by Catalytic Fast Pyrolysis of Lignocellulosic Biomass with Bifunctional Ga/ZSM-5 Catalysts journal December 2011
The effect of zeolite ZSM-5 catalyst deactivation during the upgrading of biomass-derived pyrolysis vapours journal June 1995
Effective hydrodeoxygenation of biomass-derived oxygenates into unsaturated hydrocarbons by MoO3 using low H2 pressures journal January 2013
Insights into the catalytic activity and surface modification of MoO 3 during the hydrodeoxygenation of lignin-derived model compounds into aromatic hydrocarbons under low hydrogen pressures journal January 2014
Reactivity and stability investigation of supported molybdenum oxide catalysts for the hydrodeoxygenation (HDO) of m-cresol journal November 2015
Selective vapor-phase hydrodeoxygenation of anisole to benzene on molybdenum carbide catalysts journal November 2014
Acetone Hydrodeoxygenation over Bifunctional Metallic–Acidic Molybdenum Carbide Catalysts journal January 2016
Chemical Titration and Transient Kinetic Studies of Site Requirements in Mo 2 C-Catalyzed Vapor Phase Anisole Hydrodeoxygenation journal June 2015
Structure and site evolution of molybdenum carbide catalysts upon exposure to oxygen journal June 2015
Molybdenum incorporated mesoporous silica catalyst for production of biofuels and value-added chemicals via catalytic fast pyrolysis journal January 2015
Ex situ hydrodeoxygenation in biomass pyrolysis using molybdenum oxide and low pressure hydrogen journal January 2016
Field-to-Fuel Performance Testing of Lignocellulosic Feedstocks: An Integrated Study of the Fast Pyrolysis–Hydrotreating Pathway journal April 2015
Insights into the stability of gold nanoparticles supported on metal oxides for the base-free oxidation of glucose to gluconic acid journal January 2014
Molecular characterization of the pyrolysis of biomass journal March 1987
Elucidation of Biomass Pyrolysis Products Using a Laminar Entrained Flow Reactor and Char Particle Imaging journal January 2011
Production of hydrocarbon fuels from biomass using catalytic pyrolysis under helium and hydrogen environments journal June 2011
Comparison of in-situ and ex-situ catalytic pyrolysis in a micro-reactor system journal December 2014
XPS study of as-prepared and reduced molybdenum oxides journal February 1996
Use of catalyst coke content in deactivation modeling journal April 1984
Challenges in the design and operation of processes for catalytic fast pyrolysis of woody biomass journal May 2016
A Critical View on Catalytic Pyrolysis of Biomass journal April 2015

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Hybridization of ZSM‐5 with Spinel Oxides for Biomass Vapour Upgrading journal January 2020
Task-Specific Catalyst Development for Lignin-First Biorefinery toward Hemicellulose Retention or Feedstock Extension journal January 2019
Study of Mo‐based sepiolite catalyst on depolymerization of lignin under supercritical ethanol journal September 2019
Catalysis of sugarcane-bagasse pyrolysis by Co, Ni, and Cu single and mixed oxide nanocomposites journal January 2020
An eco-friendly synthesis of 4-aryl-substituted pyrano-fuzed coumarins as potential pharmacological active heterocycles using molybdenum oxide nanoparticles as an effective and recyclable catalyst journal March 2018
Operando NAP-XPS unveils differences in MoO3 and Mo2C during hydrodeoxygenation journal November 2018
Multi-amine-assisted crystal growth of large-sized α-MoO 3 elongated nano-plates journal January 2019
Biomass derived metal carbide catalysts formed using a salt flux synthesis journal September 2019