DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Oxidative Dehydrogenation of Cyclohexane by Cu vs Pd Clusters: Selectivity Control by Specific Cluster Dynamics

Journal Article · · ChemCatChem
 [1];  [2];  [2];  [3];  [4];  [4];  [5];  [6]
  1. Argonne National Lab. (ANL), Lemont, IL (United States); University of California, Los Angeles
  2. Univ. of California, Los Angeles, CA (United States)
  3. Argonne National Lab. (ANL), Lemont,, IL (United States)
  4. Argonne National Lab. (ANL), Lemont, IL (United States)
  5. Univ. of California, Los Angeles, CA (United States); California NanoSystems Inst., Los Angeles, CA (United States)
  6. Argonne National Lab. (ANL), Lemont, IL (United States); Univ. of Chicago, IL (United States); Czech Academy of Sciences, Prague (Czech Republic)

Supported subnanometer clusters can exhibit precious catalytic properties not observed in their bulk analogues. Partially-oxidized Pd and Cu clusters are reported to catalyze the oxidative dehydrogenation of cyclohexane with high activity, and with distinctly different selectivity, producing primarily benzene or cyclohexene, respectively. Under reaction conditions, the structure and oxidation state of the two catalysts evolve differently which leads to either the desorption of the cyclohexene intermediate or to its deeper dehydrogenation. Under the applied reaction conditions the initially oxidized Pd and Cu clusters undergo partial reduction, which we show to be required for the selectivity to emerge. Both systems also have thermal access to multiple distinct structural forms yielding statistical ensembles. The structures within these ensembles evolve with the changing nature of the bound reaction intermediates differently for the two metals; the evolution is found pronounced in the Cu clusters, but only modest in Pd. Ultimately, we find the different selectivity observed experimentally for the Cu versus Pd clusters is controlled by differences in the collective structural and redox dynamics of their ensembles.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS); Univ. of California, Los Angeles, CA (United States)
Sponsoring Organization:
European Commission; US Air Force Office of Scientific Research (AFOSR); USDOD; USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
Grant/Contract Number:
AC02-06CH11357; SC0019152
OSTI ID:
1594251
Journal Information:
ChemCatChem, Journal Name: ChemCatChem Journal Issue: 5 Vol. 12; ISSN 1867-3880
Publisher:
ChemPubSoc EuropeCopyright Statement
Country of Publication:
United States
Language:
English

References (42)

The Oxidative Dehydrogenation of Cyclohexane and Cyclohexene over Unsupported and Supported Molybdena Catalysts Prepared by Metal Oxide Vapor Deposition journal November 1996
Catalytic oxidative dehydrogenation over Cu2+ exchanged NaY and KY zeolites journal January 1990
Study of Mn-based Catalysts for Oxidative Dehydrogenation of Cyclohexane to Cyclohexene journal November 2005
Catalytic oxidation over molecular sieves ion-exchanged with transition metal ions VI. A kinetic study of the oxidative dehydrogenation of cyclohexane over Y sieve ion-exchanged with cupric ion journal March 1975
Oxidative dehydrogenation of cyclohexane over vanadate catalysts journal March 1991
Rare earth oxides doped NiO/γ-Al2O3 catalyst for oxidative dehydrogenation of cyclohexane journal June 2015
Formation of ilmenite-type CoTiO3 on TiO2 and its performance in oxidative dehydrogenation of cyclohexane with molecular oxygen journal November 2014
Reprint of: Oxidative dehydrogenation of cyclohexane and cyclohexene over supported gold, –palladium catalysts☆ journal February 2011
Effect of additives doping on catalytic properties of Mg3(VO4)2 catalysts in oxidative dehydrogenation of cyclohexane journal September 2013
Oxidative dehydrogenation of cyclohexane over alumina-supported vanadium oxide nanoliths journal February 2010
Cyclohexane oxidative dehydrogenation over copper oxide catalysts journal September 2016
Reactivity of Metal Clusters journal November 2016
Ensemble-Average Representation of Pt Clusters in Conditions of Catalysis Accessed through GPU Accelerated Deep Neural Network Fitting Global Optimization journal November 2016
Electron Counting in Solids: Oxidation States, Partial Charges, and Ionicity journal April 2017
Local Fluxionality of Surface-Deposited Cluster Catalysts: The Case of Pt 7 on Al 2 O 3 journal March 2018
Dynamic Phase Diagram of Catalytic Surface of Hexagonal Boron Nitride under Conditions of Oxidative Dehydrogenation of Propane journal December 2018
Dynamics of Subnanometer Pt Clusters Can Break the Scaling Relationships in Catalysis journal January 2019
Catalysis Applications of Size-Selected Cluster Deposition journal November 2015
Fluxionality of Catalytic Clusters: When It Matters and How to Address It journal February 2017
Ethylene Dehydrogenation on Pt 4,7,8 Clusters on Al 2 O 3 : Strong Cluster Size Dependence Linked to Preferred Catalyst Morphologies journal April 2017
Nanoalloying MgO-Deposited Pt Clusters with Si To Control the Selectivity of Alkane Dehydrogenation journal July 2018
Evolution of Functional Cyclohexadiene-Based Synthetic Reagents:  The Importance of Becoming Aromatic journal October 2005
Theoretical and Experimental Study of Vanadium-Based Fluorophosphate Cathodes for Rechargeable Batteries journal May 2014
Aerobic Oxidation of Cyclohexane Catalyzed by Size-Controlled Au Clusters on Hydroxyapatite: Size Effect in the Sub-2 nm Regime journal December 2010
Oxidative Dehydrogenation of Cyclohexane on Cobalt Oxide (Co 3 O 4 ) Nanoparticles: The Effect of Particle Size on Activity and Selectivity journal September 2012
Rutile-Deposited Pt–Pd clusters: A Hypothesis Regarding the Stability at 50/50 Ratio journal September 2014
Size-Dependent Molecular Dissociation on Mass-Selected, Supported Metal Clusters journal September 1998
Boron Switch for Selectivity of Catalytic Dehydrogenation on Size-Selected Pt Clusters on Al 2 O 3 journal August 2017
Metastable Structures in Cluster Catalysis from First-Principles: Structural Ensemble in Reaction Conditions and Metastability Triggered Reactivity journal February 2018
Characterization of Cr−MCM-41 and Al,Cr−MCM-41 Mesoporous Catalysts for Gas-Phase Oxidative Dehydrogenation of Cyclohexane journal February 2007
Pt–Zn Clusters on Stoichiometric MgO(100) and TiO 2 (110): Dramatically Different Sintering Behavior journal March 2015
Hydrogenation of Ethylene and Dehydrogenation and Hydrogenolysis of Ethane on Pt(111) and Pt(211): A Density Functional Theory Study journal February 2010
Subnanometre platinum clusters as highly active and selective catalysts for the oxidative dehydrogenation of propane journal February 2009
Catalysis by clusters with precise numbers of atoms journal July 2015
Subnanometer cobalt oxide clusters as selective low temperature oxidative dehydrogenation catalysts journal February 2019
Atomically precise (catalytic) particles synthesized by a novel cluster deposition instrument journal May 2014
Electronic Structure Controls Reactivity of Size-Selected Pd Clusters Adsorbed on TiO2 Surfaces journal November 2009
Increased Silver Activity for Direct Propylene Epoxidation via Subnanometer Size Effects journal April 2010
A "Green" Route to Adipic Acid: Direct Oxidation of Cyclohexenes with 30 Percent Hydrogen Peroxide journal September 1998
Computational Design of Clusters for Catalysis journal April 2018
A New Route to Control Product Selectivity in the Oxidative Dehydrogenation of Cyclohexane and Cyclohexene journal July 2004
The Progress of Catalyst for Cyclohexane Dehydrogenation Processes journal June 2014