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Non-Innocent Role of the Ceria Support in Pd-Catalyzed Halophenol Hydrodehalogenation

Journal Article · · ACS Catalysis
The hydrodehalogenation (HDH) of halophenols is efficiently catalyzed by palladium supported on high-surface ceria (Pd/CeO2) under mild conditions (35 °C, 1 atm H2). A combination of NMR, diffuse reflectance infrared Fourier transform spectroscopy, Raman spectroscopy, and XPS studies and HDH kinetics of substituted halobenzenes suggests that the reaction proceeds mainly via a sequence of dissociative adsorption of phenolic hydroxyl onto the support, oxidative addition of the C–halogen bond to Pd, and reductive elimination to give phenol and hydrogen halide. The dissociative adsorption of the -OH group onto oxygen vacancies of the ceria support results in an electron-rich intermediate that facilitates the turnover-limiting reductive elimination step. In contrast, the direct pathway catalyzed by Pd without dissociative adsorption of the reactants on the support takes place at a slower rate. The mechanistic insights gained in this study were used to modify the reaction conditions for enabling HDH of recalcitrant halides such as fluorides and iodides.
Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1817627
Report Number(s):
IS-J 10,568
Journal Information:
ACS Catalysis, Journal Name: ACS Catalysis Journal Issue: 16 Vol. 11; ISSN 2155-5435
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (69)

Mechanistic Insight into Nanoparticle Surface Adsorption by Solution NMR Spectroscopy in an Aqueous Gel journal August 2017
‘Surface Contrast’ NMR Reveals Non‐innocent Role of Support in Pd/CeO 2 Catalyzed Phenol Hydrogenation journal June 2020
Regulating the Catalytic Activity of Pd Nanoparticles by Confinement in Ordered Mesoporous Supports journal November 2020
Hydrodeoxygenation of Guaiacol over Ceria-Zirconia Catalysts journal June 2015
Effect of Dopants on the Adsorption of Carbon Dioxide on Ceria Surfaces journal September 2015
An Efficient Synthesis of Substituted meta-Halophenols and Their Methyl Ethers: Insight into the Reaction Mechanism journal April 2010
X-Ray Photoelectron Spectroscopy of Palladium Fluorides journal September 1986
Ceria-Based Catalysts for Selective Hydrogenation Reactions: A Critical Review journal January 2021
Ceria in automotive exhaust catalysts I. Oxygen storage journal April 1984
Carbon-carbon coupling of methylene groups: thermal and photo-induced dissociation of CH2I2 on Pd(100) surface journal October 1993
Far infrared spectra of palladium compounds—I. The influence of ligands upon the palladium chloride stretching frequency journal August 1965
Liquid-phase hydrodehalogenation of substituted chlorobenzenes over palladium supported catalysts journal June 2003
Complete hydrodechlorination of chlorobenzene and its derivatives over supported nickel catalysts under liquid phase conditions journal September 2005
Study of Pt–CeO2 interaction and the effect in the selective hydrodechlorination of trichloroethylene journal March 2009
Effectiveness and stability of commercial Pd/C catalysts in the hydrodechlorination of meta-substituted chlorobenzenes journal November 2009
Synthesis of flower-like Co3O4–CeO2 composite oxide and its application to catalytic degradation of 1,2,4-trichlorobenzene journal July 2012
On the effect of Ce incorporation on pillared clay-supported Pt and Ir catalysts for aqueous-phase hydrodechlorination journal November 2016
Toward hydrogen economy: Selective guaiacol hydrogenolysis under ambient hydrogen pressure journal August 2020
Investigation of palladium interaction with cerium oxide and its state in catalysts for low-temperature CO oxidation journal June 2009
Effect of chlorine on performance of Pd catalysts prepared via colloidal immobilization journal November 2017
Transfer hydrogenation over sodium-modified ceria: Enrichment of redox sites active for alcohol dehydrogenation journal February 2017
Aqueous-phase hydrodechlorination of 4-chlorophenol on palladium nanocrystals: Identifying the catalytic sites and unraveling the reaction mechanism journal December 2018
Highly efficient degradation of 2,4-dichlorophenol over CeO2/g-C3N4 composites under visible-light irradiation: Detailed reaction pathway and mechanism journal February 2019
An organogel library for solution NMR analysis of nanoparticle suspensions in non-aqueous samples journal December 2020
Infrared study of chlorophenols and products of their photodegradation journal December 2006
Carbon–fluorine bond activation for the synthesis of functionalized molecules journal February 2015
Iodobenzene on Pd(111) studied by thermal desorption spectroscopy and laser-induced thermal desorption–Fourier transform mass spectrometry journal January 2000
Some recent results on metal/support interaction effects in NM/CeO2 (NM: noble metal) catalysts journal April 1999
Highly stable Pd/CeO2 catalyst for hydrodechlorination of chlorobenzene journal November 2003
Liquid phase catalytic hydrodechlorination of chlorobenzene over supported nickel and palladium catalysts: an NMR insight into solvent function journal March 2000
Catalytic Lignin Depolymerization to Aromatic Chemicals journal January 2020
The Many “Facets” of Halide Ions in the Chemistry of Colloidal Inorganic Nanocrystals journal July 2018
Deactivation of Ceria Supported Palladium through C–C Scission during Transfer Hydrogenation of Phenol with Alcohols journal December 2016
Tutorial on Oxidative Addition journal October 2015
Substrate–Support Interactions Mediate Hydrogenation of Phenolic Compounds by Pd/CeO 2 Nanorods journal November 2020
Hydrodeoxygenation of Guaiacol to Phenol over Ceria-Supported Iron Catalysts journal November 2020
Metal-Free Ceria Catalysis for Selective Hydrogenation of Crotonaldehyde journal November 2020
Effect of Ceria Crystal Plane on the Physicochemical and Catalytic Properties of Pd/Ceria for CO and Propane Oxidation journal March 2016
Ceria Promoted Cu-Ni/SiO 2 Catalyst for Selective Hydrodeoxygenation of Vanillin journal March 2019
Interfacial Reactivity of Au, Pd, and Pt on BiI 3 (001): Implications for Electrode Selection journal May 2011
Gold Atoms Stabilized on Various Supports Catalyze the Water–Gas Shift Reaction journal November 2013
A survey of Hammett substituent constants and resonance and field parameters journal March 1991
Metal-Mediated Reductive Hydrodehalogenation of Organic Halides journal November 2002
Probing the Surface Sites of CeO 2 Nanocrystals with Well-Defined Surface Planes via Methanol Adsorption and Desorption journal September 2012
Role of Dissociation of Phenol in Its Selective Hydrogenation on Pt(111) and Pd(111) journal February 2015
Selective Hydrogenation of Phenol Catalyzed by Palladium on High-Surface-Area Ceria at Room Temperature and Ambient Pressure journal February 2015
Simple Preparation of Palladium(II) Complexes and Determination of Their Structures by Infrared Spectrosopy journal November 1997
Hydrodefluorination and Hydrogenation of Fluorobenzene under Mild Aqueous Conditions journal August 2012
Complete Hydrodehalogenation of Polyfluorinated and Other Polyhalogenated Benzenes under Mild Catalytic Conditions journal May 2013
Electronic Effects on Reductive Elimination To Form Carbon−Carbon and Carbon−Heteroatom Bonds from Palladium(II) Complexes journal March 2007
Hydrodefluorination and Other Hydrodehalogenation of Aliphatic Carbon−Halogen Bonds Using Silylium Catalysis journal March 2010
Transfer hydrogenolysis of aryl halides and other hydrogen acceptors by formate salts in the presence of palladium/carbon catalyst journal October 1991
Facile Hydrodehalogenation with H2 and Pd/C Catalyst under Multiphase Conditions. Part 2. Selectivity and Kinetics journal July 1994
Shape-Selective Synthesis and Oxygen Storage Behavior of Ceria Nanopolyhedra, Nanorods, and Nanocubes journal December 2005
Hydrogen Cycle on CeO 2 (111) Surfaces:  Density Functional Theory Calculations journal October 2007
Pretreatment Effect on Pt/CeO 2 Catalyst in the Selective Hydrodechlorination of Trichloroethylene journal September 2010
Water Adsorption and Its Effect on the Stability of Low Index Stoichiometric and Reduced Surfaces of Ceria journal March 2012
Water Dissociation on CeO 2 (100) and CeO 2 (111) Thin Films journal August 2012
Probing Defect Sites on CeO 2 Nanocrystals with Well-Defined Surface Planes by Raman Spectroscopy and O 2 Adsorption journal November 2010
Chloro- and Bromophenols from Cultures of Mycena alcalina journal December 2006
Comparative study on catalytic hydrodehalogenation of halogenated aromatic compounds over Pd/C and Raney Ni catalysts journal April 2016
Effective liquid phase hydrodechlorination of diclofenac catalysed by Pd/CeO 2 journal January 2015
Phosphate modified ceria as a Brønsted acidic/redox multifunctional catalyst journal January 2017
Far-infrared study of palladium( II )–halogen complexes with chelating ligands containing nitrogen and σ carbon as donor atoms journal January 1970
Initial and final state effects in the ESCA spectra of cadmium and silver oxides journal October 1977
Palladium Chloride (PdCl 2 ) by XPS journal October 1994
Hydrodefluorination of Perfluoroalkyl Groups Using Silylium-Carborane Catalysts journal August 2008
Experimental and DFT study on the compounds [PdCl2L2] (L =4-methylpyrazole, 4-iodopyrazole) journal September 2015
Structure–Activity Relationship of Halophenols as a New Class of Protein Tyrosine Kinase Inhibitors journal September 2011