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

Title: Alkene Hydrosilylation on Oxide-Supported Pt-Ligand Single–Site Catalysts

Journal Article · · ChemCatChem

Heterogeneous single-site catalysts (SSCs), widely regarded as promising next-generation catalysts, blend the easy recovery of traditional heterogeneous catalysts with desired features of homogeneous catalysts: high fraction of active sites and uniform metal centers. We previously reported the synthesis of Pt-ligand SSCs through a novel metal-ligand self-assembly method on MgO, CeO2, and Al2O3 supports (J. Catal. 2018, 365, 303–312). Here, we present their applications in the industriallyrelevant alkene hydrosilylation reaction, with 95% yield achieved under mild conditions. As expected, they exhibit better metal utilization efficiency than traditional heterogeneous Pt catalysts. The comparison with commercial catalysts (Karstedt and Speier) reveals several advantages of these SSCs: higher selectivity, less colloidal Pt formation, less alkene isomerization/hydrogenation, and better tolerance towards functional groups in substrates. Despite some leaching, our catalysts exhibit satisfactory recyclability and the single-site structure remains intact on oxide supports after reaction. Pt single-sites were proved to be the main active sites rather than colloidal Pt formed during the reaction. An induction period is observed in which Pt sites are activated by Cl detachment and replacement by reactant alkenes. The most active species likely involves temporary detachment of Pt from ligand or support. Catalytic performance of Pt SSCs is sensitive to the ligand and support choices, enabling fine tuning of Pt sites. This work highlights the application of heterogeneous SSCs created by the novel metal-ligand self-assembly strategy in an industrially-relevant reaction. It also offers a potential catalyst for future industrial hydrosilylation applications with several improvements over current commercial catalysts.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States); Indiana Univ., Bloomington, IN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
Grant/Contract Number:
AC02-06CH11357; SC0016367
OSTI ID:
1563148
Alternate ID(s):
OSTI ID: 1515798; OSTI ID: 1772577
Journal Information:
ChemCatChem, Vol. 11, Issue 12; ISSN 1867-3880
Publisher:
ChemPubSoc EuropeCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

References (84)

Platinum(II) Complexes with Thioether-Functionalized Benzimidazolin-2-ylidene Ligands: Synthesis, Structural Characterization, and Application in Hydroelementation Reactions journal December 2013
Catalytically Active Single-Atom Sites Fabricated from Silver Particles journal March 2012
Asymmetric hydrogenation, transfer hydrogenation and hydrosilylation of ketones catalyzed by iron complexes journal January 2009
The effect of metal colloid morphology on catalytic activity: Further proof of the intermediacy of colloids in the rhodium-catalyzed hydrosilylation reaction journal May 1991
Study of polysiloxanes containing epoxy groups journal September 2000
Highly Active and Selective Platinum(0)-Carbene Complexes. Efficient, Catalytic Hydrosilylation of Functionalised Olefins journal October 2004
Fluorosilicones as High Temperature Elastomers journal November 1971
Regioselective Synthesis of Multifunctional Hybrid Polysiloxanes Achieved by Pt−Nanocluster Catalysis journal April 2005
Pt-Ni alloy catalysts for highly selective anti-Markovnikov alkene hydrosilylation journal May 2018
Expanded ring N-heterocyclic carbene complexes of zero valent platinum dvtms (divinyltetramethyldisiloxane): Highly efficient hydrosilylation catalysts journal January 2011
Polyether synthesis: From activated or metal-free anionic ring-opening polymerization of epoxides to functionalization journal June 2013
Ligand-tailored single-site silica supported titanium catalysts: Synthesis, characterization and towards cyanosilylation reaction journal January 2015
Catalytically Active Single-Atom Sites Fabricated from Silver Particles journal March 2012
Preparation and Molecular and Electronic Structures of Iron(0) Dinitrogen and Silane Complexes and Their Application to Catalytic Hydrogenation and Hydrosilation journal October 2004
Homogeneous Catalysis. II. The Mechanism of the Hydrosilation of Olefins Catalyzed by Group VIII Metal Complexes 1 journal January 1965
Rational Design of a Well-Defined Soluble Calcium Hydride Complex journal May 2006
Isolated, well-defined organovanadium( iii ) on silica: single-site catalyst for hydrogenation of alkenes and alkynes journal January 2017
Single-atom catalysis of CO oxidation using Pt1/FeOx journal July 2011
Discovering Partially Charged Single-Atom Pt for Enhanced Anti-Markovnikov Alkene Hydrosilylation journal May 2018
Lewis Acid-Assisted Anionic Ring-Opening Polymerization of Epoxide by the Aluminum Complexes of Porphyrin, Phthalocyanine, Tetraazaannulene, and Schiff Base as Initiators journal April 1994
First Titanium-Catalyzed a nti -1,4-Hydrosilylation of Dienes journal November 2005
Ein stabiler “Single-site”-Palladiumkatalysator für Hydrierungen journal July 2015
Olefin Isomerization and Hydrosilylation Catalysis by Lewis Acidic Organofluorophosphonium Salts journal November 2013
Dense organic catalytic membranes for fine chemical synthesis journal February 2000
Use of functionalized PEG with 4-aminobenzoic acid stabilized platinum nanoparticles as an efficient catalyst for the hydrosilylation of alkenes journal March 2013
New Bis(dialkynyldisiloxane)triplatinum(0) Cluster: Synthesis, Structure, and Catalytic Activity in Olefin-Hydrosilylation Reactions journal September 2012
Palladium- and platinum-catalyzed coupling reactions of allyloxy aromatics with hydridosilanes and hydridosiloxanes: Novel liquid crystalline/organosilane materials journal December 1994
Diethyl sulfide stabilization of platinum-complex catalysts for hydrosilylation of olefins journal July 2011
A Facile Preparation and Polymerization of 1,1-Difunctionalized Disiloxanes journal July 1996
Cyanoethylation of Trichlorosilane. II. α-Addition journal March 1956
Redox-active on-surface polymerization of single-site divalent cations from pure metals by a ketone-functionalized phenanthroline journal February 2015
Ir-catalyzed hydrosilylation reaction of allyl acetate with octakis(dimethylsiloxy)octasilsesquioxane and related hydrosilanes journal February 2014
On the mechanism of metal colloid catalyzed hydrosilylation: proposed explanations for electronic effects and oxygen cocatalysis journal August 1990
A Strategy for the Synthesis of Well-Defined Iron Catalysts and Application to Regioselective Diene Hydrosilylation journal September 2010
Theoretical Study of Platinum(0)-Catalyzed Hydrosilylation of Ethylene. Chalk−Harrod Mechanism or Modified Chalk−Harrod Mechanism journal June 1998
The Addition of Silicon Hydrides to Olefinic Double Bonds. Part II. The Use of Group VIII Metal Catalysts journal February 1957
Poly(vinylsilane): a precursor to silicon carbide. 1. Preparation and characterization journal May 1991
Chiral Bis(pyridylimino)isoindoles: A Highly Modular Class of Pincer Ligands for Enantioselective Catalysis journal June 2008
Pentacarbonyliron(0) photocatalyzed reactions of trialkylsilanes with alkenes journal March 1977
Synthesis and characterization of UV-curable polydimethylsiloxane epoxy acrylate journal June 2003
Fluorosilicones as High Temperature Elastomers journal April 1971
Selective and Efficient Platinum(0)-Carbene Complexes As Hydrosilylation Catalysts journal October 2002
Fabrication, characterization, and stability of supported single-atom catalysts journal January 2017
Catalytic Hydrosilylation of Alkenes by a Ruthenium Silylene Complex. Evidence for a New Hydrosilylation Mechanism journal November 2003
Platinum Oxide (PtO 2 ): A Potent Hydrosilylation Catalyst journal June 2002
New fluorinated polysiloxanes containing an ester function in the spacer. I. Synthesis and characterization journal July 1994
Peroxide-Catalyzed Addition of Trichlorosilane to 1-Octene journal January 1947
Rational Design of a Well-Defined Soluble Calcium Hydride Complex journal May 2006
Recent advances in catalytic hydrosilylation journal March 1993
Platinum(II)-bis-(N-heterocyclic carbene) complexes: synthesis, structure and catalytic activity in the hydrosilylation of alkenes journal August 2011
Chemical Substituent Effects on Morphological Transitions in Styrene−Butadiene−Styrene Triblock Copolymer Grafted with Polyhedral Oligomeric Silsesquioxanes journal March 2006
Highly Efficient B(C 6 F 5 ) 3 -Catalyzed Hydrosilylation of Olefins journal March 2002
Selective Formic Acid Dehydrogenation on Pt-Cu Single-Atom Alloys journal December 2016
A Stable Single-Site Palladium Catalyst for Hydrogenations journal July 2015
Hydrosilylation catalyzed by metal colloids: a relative activity study journal March 1990
Two- and Three-Electron Oxidation of Single-Site Vanadium Centers at Surfaces by Ligand Design journal June 2015
Heterogeneously supported pseudo-single atom Pt as sustainable hydrosilylation catalyst journal May 2018
One-Pot Pyrolysis to N-Doped Graphene with High-Density Pt Single Atomic Sites as Heterogeneous Catalyst for Alkene Hydrosilylation journal September 2018
Hydrosilylation catalysis by an earth alkaline metal silyl: synthesis, characterization, and reactivity of bis(triphenylsilyl)calcium journal January 2014
In Situ Determination of the Active Catalyst in Hydrosilylation Reactions Using Highly Reactive Pt(0) Catalyst Precursors journal April 1999
Recent advances and actual challenges in late transition metal catalyzed hydrosilylation of olefins from an industrial point of view journal July 2011
Novel liquid crystalline resins based on MQ siloxanes journal November 2006
Single-Atom Pd 1 /Graphene Catalyst Achieved by Atomic Layer Deposition: Remarkable Performance in Selective Hydrogenation of 1,3-Butadiene journal August 2015
Platinum nanoparticles in suspension are as efficient as Karstedt's complex for alkene hydrosilylation journal January 2015
Synthesis and photocrosslinking of benzyl acrylate substituted polydimethylsiloxanes journal October 2000
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
Asymmetric Catalysis of Epoxide Ring-Opening Reactions journal June 2000
Platinum Catalysis Revisited—Unraveling Principles of Catalytic Olefin Hydrosilylation journal January 2016
Synthesis of platinum single-site centers through metal-ligand self-assembly on powdered metal oxide supports journal September 2018
Pt-catalyzed hydrosilylation of ethylene. A theoretical study of the reaction mechanism journal September 1999
Selective propane dehydrogenation with single-site CoII on SiO2 by a non-redox mechanism journal February 2015
Redox Isomeric Surface Structures Are Preferred over Odd-Electron Pt 1+ journal September 2018
Effect of triarylphosphane ligands on the rhodium-catalyzed hydrosilylation of alkene: Rhodium-catalyzed hydrosilylation of styrene journal January 2014
Chiral Bis(pyridylimino)isoindoles: A Highly Modular Class of Pincer Ligands for Enantioselective Catalysis journal June 2008
Silicone waxes—synthesis via hydrosilylation in homo- and heterogeneous systems journal September 2006
Comparative single atom heterogeneous catalysts (SAHCs) on different platforms: a theoretical approach journal January 2017
Redox-Active On-Surface Assembly of Metal–Organic Chains with Single-Site Pt(II) journal July 2014
Rhenium-mediated dehydrogenative silylation and highly regioselective hydrosilylation of nitrile substituted olefins journal January 2014
Platinum-catalyzed hydrosilylation of alkynes journal October 1991
Platinum-catalyzed hydrosilylation - colloid formation as the essential step journal November 1986
The New Tetrafunctional π Acceptor Ligand 3,6-Bis(2′-pyrimidyl)-1,2,4,5-tetrazine (bmtz): Diruthenium Complexes of bmtz and of its 1,4-Dihydro Form journal January 1995
“A posteriori” modification of carbosilane dendrimers and dendrons: their activation in core and branch positions journal January 2005
First Titanium-Catalyzed anti-1,4-Hydrosilylation of Dienes. journal April 2006