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Title: Steric Effect and Evolution of Surface Species in the Hydrodeoxygenation of Bio-Oil Model Compounds over Pt/HBEA

Journal Article · · ACS Catalysis
 [1];  [1];  [2];  [1]
  1. Georgia Inst. of Technology, Atlanta, GA (United States). School of Chemical & Biomolecular Engineering
  2. National Renewable Energy Lab. (NREL), Golden, CO (United States)

The hydrodeoxygenation of various bio-oil model compounds (anisole, m-cresol and guaiacol) over Pt/HBEA and the evolution of surface species is investigated. Depending on the functional group, different surface species are formed when the compounds are adsorbed in the presence of Lewis acid sites. For anisole, the methoxy group is decomposed to form phenate species. The methyl and methoxy group remains intact on m-cresol and guaiacol to form cresolate and methoxy phenate species, respectively. The position of these functional groups have a strong influence in the degree of hydrodeoxygenation due to steric hindrance. Based on operando transmission FTIR spectroscopy, a timeline for the formation of polynuclear aromatics and catalyst deactivation is constructed, which is also dependent on the substituents. The slow deactivation rate and low carbon content on Pt/HBEA is discussed.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1240241
Report Number(s):
NREL/JA-5100-65969
Journal Information:
ACS Catalysis, Vol. 6, Issue 2; ISSN 2155-5435
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 90 works
Citation information provided by
Web of Science

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Development of Bifunctional Hydrodeoxygenation Catalyst Rh‐HY for the Generation of Biomass‐Derived High‐Energy‐Density Fuels journal April 2019
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