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

Title: Bidentate N‐based Ligands for Highly Reusable, Ligand‐coordinated, Supported Pt Hydrosilylation Catalysts

Journal Article · · ChemCatChem
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [2]
  1. Department of Chemistry Indiana University Bloomington Bloomington IN 47401 USA, Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99352 USA
  2. Department of Chemistry Indiana University Bloomington Bloomington IN 47401 USA

Abstract A significant challenge in designing supported metal‐ligand catalysts for solution‐phase reactions is the stabilization of the metal active sites against leaching into solution. Here, we examine alkene hydrosilylation reactions as model systems to improve the stability of highly dispersed Pt using a metal‐ligand coordination strategy on high surface area oxide supports. By evaluating a series of bidentate N‐based ligands, we demonstrate several design strategies to improve stability of the highly dispersed Pt 2+ centers against leaching, while maintaining a high level of catalytic activity, selectivity, and recyclability for alkene hydrosilylation batch reactions under mild conditions. These involve a bi‐functional approach to ligand design, which considers interaction to the support and a well‐defined coordination environment for the metal active site. Three strategies are reported: modifying ligands for stronger interaction with oxide surfaces, mixing ligands, and pre‐depositing an “anchoring ligand” to the support before loading the metal‐ligand catalyst. Each of these is successful in enhancing Pt recyclability. Particularly, two Pt‐phenanthroline catalysts exhibit excellent reusability for multiple batch reaction cycles, due to high stability of the active Pt species. Addressing the active site leaching problem significantly enhances the utility of ligand‐coordinated supported metal catalysts as highly stable and selective catalysts for solution‐phase reactions.

Sponsoring Organization:
USDOE
OSTI ID:
1633668
Journal Information:
ChemCatChem, Journal Name: ChemCatChem Journal Issue: 13 Vol. 12; ISSN 1867-3880
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

References (71)

Highly Active and Selective Platinum(0)-Carbene Complexes. Efficient, Catalytic Hydrosilylation of Functionalised Olefins journal October 2004
Rational Design of a Well-Defined Soluble Calcium Hydride Complex journal May 2006
Chiral Bis(pyridylimino)isoindoles: A Highly Modular Class of Pincer Ligands for Enantioselective Catalysis journal June 2008
Catalytically Active Single-Atom Sites Fabricated from Silver Particles journal March 2012
Ein stabiler “Single-site”-Palladiumkatalysator für Hydrierungen journal July 2015
Rational Design of a Well-Defined Soluble Calcium Hydride Complex journal May 2006
Chiral Bis(pyridylimino)isoindoles: A Highly Modular Class of Pincer Ligands for Enantioselective Catalysis journal June 2008
Catalytically Active Single-Atom Sites Fabricated from Silver Particles journal March 2012
A Stable Single-Site Palladium Catalyst for Hydrogenations journal July 2015
Effect of triarylphosphane ligands on the rhodium-catalyzed hydrosilylation of alkene: Rhodium-catalyzed hydrosilylation of styrene journal January 2014
Synthesis and structural characterization of a new polysiloxane with second-order nonlinear optical effect journal January 2004
Thermally initiated cationic polymerization and properties of epoxy siloxane journal January 2006
New Bis(dialkynyldisiloxane)triplatinum(0) Cluster: Synthesis, Structure, and Catalytic Activity in Olefin-Hydrosilylation Reactions journal September 2012
Alkene Hydrosilylation on Oxide‐Supported Pt‐Ligand Single‐Site Catalysts journal May 2019
Redox Isomeric Surface Structures Are Preferred over Odd-Electron Pt 1+ journal September 2018
Multi‐electron Reduction Capacity and Multiple Binding Pockets in Metal–Organic Redox Assembly at Surfaces journal March 2019
New fluorinated polysiloxanes containing an ester function in the spacer. I. Synthesis and characterization journal July 1994
Palladium- and platinum-catalyzed coupling reactions of allyloxy aromatics with hydridosilanes and hydridosiloxanes: Novel liquid crystalline/organosilane materials journal December 1994
Synthesis and photocrosslinking of benzyl acrylate substituted polydimethylsiloxanes journal October 2000
Dense organic catalytic membranes for fine chemical synthesis journal February 2000
Single-site SBA-15 supported zirconium catalysts. Synthesis, characterization and toward cyanosilylation reaction journal January 2015
Diethyl sulfide stabilization of platinum-complex catalysts for hydrosilylation of olefins journal July 2011
Recent advances and actual challenges in late transition metal catalyzed hydrosilylation of olefins from an industrial point of view journal July 2011
Unusual catalytic activity after simultaneous immobilization of two metalloporphyrins on hydrozincite/nanocrystalline anatase journal August 2017
Synthesis of platinum single-site centers through metal-ligand self-assembly on powdered metal oxide supports journal September 2018
Use of functionalized PEG with 4-aminobenzoic acid stabilized platinum nanoparticles as an efficient catalyst for the hydrosilylation of alkenes journal March 2013
Novel liquid crystalline resins based on MQ siloxanes journal November 2006
Expanded ring N-heterocyclic carbene complexes of zero valent platinum dvtms (divinyltetramethyldisiloxane): Highly efficient hydrosilylation catalysts journal January 2011
Platinum(II)-bis-(N-heterocyclic carbene) complexes: synthesis, structure and catalytic activity in the hydrosilylation of alkenes journal August 2011
Rhenium-mediated dehydrogenative silylation and highly regioselective hydrosilylation of nitrile substituted olefins journal January 2014
Ir-catalyzed hydrosilylation reaction of allyl acetate with octakis(dimethylsiloxy)octasilsesquioxane and related hydrosilanes journal February 2014
Ligand-tailored single-site silica supported titanium catalysts: Synthesis, characterization and towards cyanosilylation reaction journal January 2015
Silicone waxes—synthesis via hydrosilylation in homo- and heterogeneous systems journal September 2006
Platinum Catalysis Revisited—Unraveling Principles of Catalytic Olefin Hydrosilylation journal January 2016
Catalysis by Supported Single Metal Atoms journal November 2016
One-Pot Pyrolysis to N-Doped Graphene with High-Density Pt Single Atomic Sites as Heterogeneous Catalyst for Alkene Hydrosilylation journal September 2018
Determination of the Evolution of Heterogeneous Single Metal Atoms and Nanoclusters under Reaction Conditions: Which Are the Working Catalytic Sites? journal October 2019
Synthesis of Single Atom Based Heterogeneous Platinum Catalysts: High Selectivity and Activity for Hydrosilylation Reactions journal May 2017
Propylene Hydrogenation and Propane Dehydrogenation by a Single-Site Zn 2+ on Silica Catalyst journal March 2014
Peroxide-Catalyzed Addition of Trichlorosilane to 1-Octene journal January 1947
The Addition of Silicon Hydrides to Olefinic Double Bonds. Part II. The Use of Group VIII Metal Catalysts journal February 1957
Catalytic Hydrosilylation of Alkenes by a Ruthenium Silylene Complex. Evidence for a New Hydrosilylation Mechanism journal November 2003
Regioselective Synthesis of Multifunctional Hybrid Polysiloxanes Achieved by Pt−Nanocluster Catalysis journal April 2005
Preparation and Molecular and Electronic Structures of Iron(0) Dinitrogen and Silane Complexes and Their Application to Catalytic Hydrogenation and Hydrosilation journal October 2004
A Strategy for the Synthesis of Well-Defined Iron Catalysts and Application to Regioselective Diene Hydrosilylation journal September 2010
Redox-Active On-Surface Assembly of Metal–Organic Chains with Single-Site Pt(II) journal July 2014
In Situ Determination of the Active Catalyst in Hydrosilylation Reactions Using Highly Reactive Pt(0) Catalyst Precursors journal April 1999
Two- and Three-Electron Oxidation of Single-Site Vanadium Centers at Surfaces by Ligand Design journal June 2015
Single-Site Cobalt Catalysts at New Zr 82 -O) 82 -OH) 4 Metal-Organic Framework Nodes for Highly Active Hydrogenation of Alkenes, Imines, Carbonyls, and Heterocycles journal September 2016
Catalyst Architecture for Stable Single Atom Dispersion Enables Site-Specific Spectroscopic and Reactivity Measurements of CO Adsorbed to Pt Atoms, Oxidized Pt Clusters, and Metallic Pt Clusters on TiO 2 journal September 2017
Discovering Partially Charged Single-Atom Pt for Enhanced Anti-Markovnikov Alkene Hydrosilylation journal May 2018
Chemical Substituent Effects on Morphological Transitions in Styrene−Butadiene−Styrene Triblock Copolymer Grafted with Polyhedral Oligomeric Silsesquioxanes journal March 2006
Platinum Oxide (PtO 2 ): A Potent Hydrosilylation Catalyst journal June 2002
Poly(vinylsilane): a precursor to silicon carbide. 1. Preparation and characterization journal May 1991
First Titanium-Catalyzed a nti -1,4-Hydrosilylation of Dienes journal November 2005
Platinum(II) Complexes with Thioether-Functionalized Benzimidazolin-2-ylidene Ligands: Synthesis, Structural Characterization, and Application in Hydroelementation Reactions journal December 2013
Single-atom catalysis of CO oxidation using Pt1/FeOx journal July 2011
“A posteriori” modification of carbosilane dendrimers and dendrons: their activation in core and branch positions journal January 2005
A molecular Pd( ii ) complex incorporated into a MOF as a highly active single-site heterogeneous catalyst for C–Cl bond activation journal January 2014
Platinum nanoparticles in suspension are as efficient as Karstedt's complex for alkene hydrosilylation journal January 2015
Fabrication, characterization, and stability of supported single-atom catalysts journal January 2017
Comparative single atom heterogeneous catalysts (SAHCs) on different platforms: a theoretical approach journal January 2017
Sulfate promotion of selective catalytic reduction of nitric oxide by ammonia on ceria journal January 2019
Asymmetric hydrogenation, transfer hydrogenation and hydrosilylation of ketones catalyzed by iron complexes journal January 2009
A stable 16-electron iridium(iii) hydride complex grafted on SBA-15: a single-site catalyst for alkene hydrogenation journal January 2013
Hydrosilylation catalysis by an earth alkaline metal silyl: synthesis, characterization, and reactivity of bis(triphenylsilyl)calcium journal January 2014
Redox-active on-surface polymerization of single-site divalent cations from pure metals by a ketone-functionalized phenanthroline journal February 2015
Selective and Efficient Platinum(0)-Carbene Complexes As Hydrosilylation Catalysts journal October 2002
Cyanoethylation of Trichlorosilane. II. α-Addition journal March 1956
A Facile Preparation and Polymerization of 1,1-Difunctionalized Disiloxanes journal July 1996
Fluorosilicones as High Temperature Elastomers journal November 1971