Journal ArticleDOI
Solvent-Free Oxidation of Primary Carbon-Hydrogen Bonds in Toluene Using Au-Pd Alloy Nanoparticles
Lokesh Kesavan,Ramchandra Tiruvalam,Mohd Hasbi Ab. Rahim,Mohd Izham Saiman,Dan I. Enache,Robert Leyshon Jenkins,Nikolaos Dimitratos,Jose Antonio Lopez-Sanchez,Stuart Hamilton Taylor,David W. Knight,Christopher J. Kiely,Graham J. Hutchings +11 more
TLDR
It is reported here that supported gold-palladium nanoparticles on carbon or TiO2 are active for the oxidation of the primary carbon-hydrogen bonds in toluene and related molecules, giving high selectivities to benzyl benzoate under mild solvent-free conditions.Abstract:
Selective oxidation of primary carbon-hydrogen bonds with oxygen is of crucial importance for the sustainable exploitation of available feedstocks. To date, heterogeneous catalysts have either shown low activity and/or selectivity or have required activated oxygen donors. We report here that supported gold-palladium (Au-Pd) nanoparticles on carbon or TiO2 are active for the oxidation of the primary carbon-hydrogen bonds in toluene and related molecules, giving high selectivities to benzyl benzoate under mild solvent-free conditions. Differences between the catalytic activity of the Au-Pd nanoparticles on carbon and TiO2 supports are rationalized in terms of the particle/support wetting behavior and the availability of exposed corner/edge sites.read more
Citations
More filters
Journal ArticleDOI
Metal Catalysts for Heterogeneous Catalysis: From Single Atoms to Nanoclusters and Nanoparticles.
Lichen Liu,Avelino Corma +1 more
TL;DR: This Review will compare the results obtained from different systems and try to give a picture on how different types of metal species work in different reactions and give perspectives on the future directions toward better understanding of the catalytic behavior of different metal entities in a unifying manner.
Journal ArticleDOI
Multifunctional metal–organic framework catalysts: synergistic catalysis and tandem reactions
TL;DR: In this review, the applications of MOFs with multiple active sites in synergistic organic catalysis, photocatalysis and tandem reactions are discussed and proposed mechanisms are presented in detail.
Journal ArticleDOI
Designing bimetallic catalysts for a green and sustainable future
Meenakshisundaram Sankar,Nikolaos Dimitratos,Nikolaos Dimitratos,Peter J. Miedziak,Peter P. Wells,Peter P. Wells,Christopher J. Kiely,Graham J. Hutchings +7 more
TL;DR: A specific objective of this review article is to motivate researchers to synthesize some of the "designer" bimetallic catalysts with specific nanostructures, inspired from recent advances in the area of materials chemistry, and to utilize them for the transformation of biomass derived materials that are very complex and pose different challenges compared to those of simple organic molecules.
Journal ArticleDOI
Oxide Defect Engineering Enables to Couple Solar Energy into Oxygen Activation
Ning Zhang,Xiyu Li,Huacheng Ye,Shuangming Chen,Huanxin Ju,Daobin Liu,Yue Lin,Wei Ye,Chengming Wang,Qian Xu,Junfa Zhu,Li Song,Jun Jiang,Yujie Xiong +13 more
TL;DR: It is reported that defect engineering on oxide catalyst can serve as a versatile approach to bridge light harvesting with surface reactions by ensuring species chemisorption.
Journal ArticleDOI
Nano-Gold Catalysis in Fine Chemical Synthesis
TL;DR: This poster presents a probabilistic procedure to characterize the response of the immune system to x-ray diffraction and three different types of deposits are confirmed to be Na6(CO3), Na4(SO4) and Na2(SO3).
References
More filters
Journal ArticleDOI
Solvent-Free Oxidation of Primary Alcohols to Aldehydes Using Au-Pd/TiO2 Catalysts
Dan I. Enache,Jennifer K. Edwards,Philip Landon,Benjamin Solsona-Espriu,Albert Frederick Carley,Andrew A. Herzing,Masashi Watanabe,Christopher J. Kiely,David W. Knight,Graham J. Hutchings +9 more
TL;DR: It is shown that Au/Pd-TiO2 catalysts give very high turnover frequencies (up to 270,000 turnovers per hour) for the oxidation of alcohols, including primary alkyl alcohols and the addition of Au to Pd nanocrystals improved the overall selectivity.
Journal ArticleDOI
Nanoporous Gold Catalysts for Selective Gas-Phase Oxidative Coupling of Methanol at Low Temperature
TL;DR: Nanoporous Au, prepared by the dealloying of AuAg alloys, is a new catalyst with a stable structure that is active without any support that catalyzes the selective oxidative coupling of methanol to methyl formate with selectivities above 97% and high turnover frequencies at temperatures below 80°C.
Book
Metal-catalyzed Oxidations of Organic Compounds: Mechanistic Principles and Synthetic Methodology Including Biochemical Processes
Roger A. Sheldon,Jay K. Kochi +1 more
Journal ArticleDOI
Switching Off Hydrogen Peroxide Hydrogenation in the Direct Synthesis Process
Jennifer K. Edwards,Benjamín Solsona,Edwin Ntainjua N,Albert Frederick Carley,Andrew A. Herzing,Andrew A. Herzing,Christopher J. Kiely,Graham J. Hutchings +7 more
TL;DR: It is shown that acid pretreatment of a carbon support for gold-palladium alloy catalysts switches off the decomposition of H2O2, and the acid-pretreated catalysts give high yields of H 2O2 with hydrogen selectivities greater than 95%.
Journal ArticleDOI
The soluble methane mono-oxygenase of Methylococcus capsulatus (Bath). Its ability to oxygenate n-alkanes, n-alkenes, ethers, and alicyclic, aromatic and heterocyclic compounds.
TL;DR: Methane mono-oxygenase of Methylococcus capsulatus (Bath) catalyses the oxidation of various substituted methane derivatives including methanol and, in some of its catalytic properties, apparently resembles the analogous enzyme from Methylomonas methanica but differs from those found in Methylosinus trichosporium and M methylomonas albus.