Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Phosphonic acid modifiers for enhancing selective hydrodeoxygenation over Pt catalysts: The role of the catalyst support

Journal Article · · Journal of Catalysis
 [1];  [2];  [3];  [1]
  1. Univ. of Colorado, Boulder, CO (United States). Dept. of Chemical and Biological Engineering
  2. National Renewable Energy Lab. (NREL), Golden, CO (United States). National Bioenergy Center
  3. National Renewable Energy Lab. (NREL), Golden, CO (United States)

Bifunctional catalysts comprised of both noble metal and Bronsted acid sites are of growing interest for many reactions, such as the hydrodeoxygenation (HDO) of oxygenates produced by the deconstruction of lignocellulosic biomass. One method of preparing a bifunctional metal-acid catalyst is to modify the supporting material of a metal catalyst with acid-containing ligands, such as phosphonic acids (PAs), which provide tunable Bronsted acid sites at the metal-support interface. Here, we explore the potential for PA modification to improve HDO rates on Al2O3, TiO2, CeO2, and SiO2-Al2O3 supports. PAs containing either alkyl or carboxylic acid (CA) tails were used to modify Pt catalysts on each support. PA modification improved HDO rates for the model compound benzyl alcohol when applied to Pt supported by Al2O3, TiO2, and CeO2, but had a negative effect on the HDO rate of Pt/SiO2-Al2O3. Measurements of the relative strength of Bronsted acid sites present on the modified and unmodified catalysts suggested that PAs improved HDO when they provided new or stronger Bronsted acid sites. Additionally, the strength of the Bronsted acid sites provided by PA modifiers were tunable by altering the tail functionality, which affected the rates of HDO. These results suggest that PAs can be used to modify a variety of supports to prepare bifunctional acid-metal catalysts.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Bioenergy Technologies Office (EE-3B); USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1507287
Alternate ID(s):
OSTI ID: 1658629
Report Number(s):
NREL/JA--5100-73660
Journal Information:
Journal of Catalysis, Journal Name: Journal of Catalysis Journal Issue: C Vol. 372; ISSN 0021-9517
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (48)

Renewable Alkanes by Aqueous-Phase Reforming of Biomass-Derived Oxygenates journal March 2004
Multifunctional Heterogeneous Catalysts: SBA-15-Containing Primary Amines and Sulfonic Acids journal September 2006
Liquid-Phase Catalytic Processing of Biomass-Derived Oxygenated Hydrocarbons to Fuels and Chemicals journal September 2007
Pathways for biomass-derived lignin to hydrocarbon fuels journal July 2013
Enhancing Heterogeneous Catalysis through Cooperative Hybrid Organic–Inorganic Interfaces journal May 2006
Hydrodeoxygenation of Guaiacol over Ceria-Zirconia Catalysts journal June 2015
The effect of CeO 2 on Pt/CeO 2 /CNT catalyst for CO electrooxidation journal April 2009
Infrared Spectra of Alkylphosphonic Acid Bound to Aluminium Surfaces journal August 2007
Advancing catalytic fast pyrolysis through integrated multiscale modeling and experimentation: Challenges, progress, and perspectives
  • Ciesielski, Peter N.; Pecha, M. Brennan; Bharadwaj, Vivek S.
  • Wiley Interdisciplinary Reviews: Energy and Environment, Vol. 7, Issue 4 https://doi.org/10.1002/wene.297
journal April 2018
Self-assembled Monolayers of Alkylphosphonic Acids on Aluminum Oxide Surfaces - A Theoretical Study journal May 2010
Determination of Integrated Molar Extinction Coefficients for Infrared Absorption Bands of Pyridine Adsorbed on Solid Acid Catalysts journal June 1993
Surface vacancies in close packed crystal structures journal February 1979
An infrared study of pyridine adsorbed on acidic solids. Characterization of surface acidity journal October 1963
Carbon monoxide — A low temperature infrared probe for the characterization of hydroxyl group properties on metal oxide surfaces journal April 1987
Surface acidity of MCM-41 by in situ IR studies of pyridine adsorption journal February 1999
Hydrodeoxygenation of lignin model compounds over a copper chromite catalyst journal December 2012
Phosphonic acid promotion of supported Pd catalysts for low temperature vanillin hydrodeoxygenation in ethanol journal July 2018
Brønsted and Lewis acidity of modified montmorillonite clay catalysts determined by FT-IR spectroscopy journal March 2009
Use of DFT to achieve a rational understanding of acid?basic properties of ?-alumina surfaces journal August 2004
The effect of acid–base pairing on catalysis: An efficient acid–base functionalized catalyst for aldol condensation journal April 2007
Nanoscale surface study and reactions mechanism of 2-butanol over the γ-alumina (100) surface and nanochannel: A DFT study journal December 2010
Phosphonic acid adsorption at the TiO2 anatase (101) surface investigated by periodic hybrid HF-DFT computations journal May 2005
Adsorption of phosphonic and ethylphosphonic acid on aluminum oxide surfaces journal April 2008
Furfuryl alcohol deoxygenation, decarbonylation, and ring-opening on Pt(111) journal November 2018
Enhancing Cooperativity in Bifunctional Acid–Pd Catalysts with Carboxylic Acid-Functionalized Organic Monolayers journal March 2018
Enhanced Hydrothermal Stability of γ-Al 2 O 3 Catalyst Supports with Alkyl Phosphonate Coatings journal March 2018
Experimental and Theoretical Insights into the Hydrogen-Efficient Direct Hydrodeoxygenation Mechanism of Phenol over Ru/TiO 2 journal October 2015
Role of the Support and Reaction Conditions on the Vapor-Phase Deoxygenation of m -Cresol over Pt/C and Pt/TiO 2 Catalysts journal March 2016
Bifunctional Catalysts for Upgrading of Biomass-Derived Oxygenates: A Review journal July 2016
Hydrodeoxygenation of Phenol over Pd Catalysts. Effect of Support on Reaction Mechanism and Catalyst Deactivation journal February 2017
Controlling the Surface Reactivity of Titania via Electronic Tuning of Self-Assembled Monolayers journal November 2017
Phosphonate- and Carboxylate-Based Self-Assembled Monolayers for Organic Devices: A Theoretical Study of Surface Binding on Aluminum Oxide with Experimental Support journal June 2013
Inorganic Solid Acids and Their Use in Acid-Catalyzed Hydrocarbon Reactions journal May 1995
Conversion of Biomass into Chemicals over Metal Catalysts journal October 2013
Formation and Structure of Self-Assembled Monolayers journal January 1996
Structural and Electronic Properties of Selected Rutile and Anatase TiO 2 Surfaces:  An ab Initio Investigation journal January 2008
Quantitative Lewis/Brönsted Ratios Using DRIFTS journal November 2003
Studies of the Hydrogen Held by Solids. VII. The Exchange of the Hydroxyl Groups of Alumina and Silica-Alumina Catalysts with Deuterated Methane journal September 1965
Surface Reactions of Acetone on Al 2 O 3 , TiO 2 , ZrO 2 , and CeO 2 :  IR Spectroscopic Assessment of Impacts of the Surface Acid−Base Properties journal February 2001
Self-Assembly of Carboxyalkylphosphonic Acids on Metal Oxide Powders journal June 2002
OH Surface Density of SiO 2 and TiO 2 by Thermogravimetric Analysis journal January 2003
Control of interfacial acid–metal catalysis with organic monolayers journal January 2018
Catalytic routes for the conversion of biomass into liquid hydrocarbon transportation fuels journal January 2011
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
Molecular dynamics simulations of phosphonic acid–aluminum oxide self-organization and their evolution into ordered monolayers journal January 2017
Phosphate modified ceria as a Brønsted acidic/redox multifunctional catalyst journal January 2017
Cooperative catalysis by silica-supported organic functional groups journal January 2008
Production of Liquid Alkanes by Aqueous-Phase Processing of Biomass-Derived Carbohydrates journal June 2005

Cited By (2)

Investigation of the effects of phosphorus on the selective hydrodeoxygenation of anisole over an Fe/SiO 2 catalyst journal January 2019
Role of tungsten modifiers in bimetallic catalysts for enhanced hydrodeoxygenation activity and selectivity journal January 2020

Similar Records

Enhancing Cooperativity in Bifunctional Acid–Pd Catalysts with Carboxylic Acid-Functionalized Organic Monolayers
Journal Article · Sun Mar 04 23:00:00 EST 2018 · Journal of Physical Chemistry. C · OSTI ID:1433482

Investigating deposition sequence during synthesis of Pd/Al2O3 catalysts modified with organic monolayers
Journal Article · Sun Feb 20 23:00:00 EST 2022 · Catalysis Science and Technology · OSTI ID:1866621