Partial Reduction and Selective Transfer of Hydrogen Chloride on Catalytic Gold Nanoparticles

Oliver‐Meseguer, Judit; Doménech‐Carbó, Antonio; Boronat, Mercedes; Leyva‐Pérez, Antonio; Corma, Avelino

doi:10.1002/ange.201700282

Cited by 14 publications

(8 citation statements)

References 41 publications

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“…In a recent work from our group, a different reaction mechanism is proposed for hydrochlorination of alkynes on Au nanoparticles when working in the liquid phase. 542 Metallic Au nanoparticles supported on TiO 2 are proved to be the most active catalyst for hydrochlorination of phenylacetylene, while mononuclear Au complexes or subnanometric Au clusters are not active under the same conditions. According to the results presented, the activation of HCl is found to be the rate-limiting step, and its activation is more favorable on metallic Au surface.…”

Section: Comparison Of the Catalytic Behavior Of Single Atoms Nanoclmentioning

confidence: 99%

Metal Catalysts for Heterogeneous Catalysis: From Single Atoms to Nanoclusters and Nanoparticles

2018

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Metal species with different size (single atoms, nanoclusters, and nanoparticles) show different catalytic behavior for various heterogeneous catalytic reactions. It has been shown in the literature that many factors including the particle size, shape, chemical composition, metal–support interaction, and metal–reactant/solvent interaction can have significant influences on the catalytic properties of metal catalysts. The recent developments of well-controlled synthesis methodologies and advanced characterization tools allow one to correlate the relationships at the molecular level. In this Review, the electronic and geometric structures of single atoms, nanoclusters, and nanoparticles will be discussed. Furthermore, we will summarize the catalytic applications of single atoms, nanoclusters, and nanoparticles for different types of reactions, including CO oxidation, selective oxidation, selective hydrogenation, organic reactions, electrocatalytic, and photocatalytic reactions. We 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 (single atoms, nanoclusters, and nanoparticles) in a unifying manner.

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Section: Comparison Of the Catalytic Behavior Of Single Atoms Nanoclmentioning

confidence: 99%

Metal Catalysts for Heterogeneous Catalysis: From Single Atoms to Nanoclusters and Nanoparticles

2018

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“…The process is a textbook example of sacrificing environment for societal progress, due to the massive demand of polyvinyl chloride (PVC, > USD 45 billion market) in a number of sectors, mostly in building and construction. [23][24][25][26][27][28] At present, the monomer vinyl chloride (VCM) is produced from ethylene (ca. 65%) or acetylene (ca.…”

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confidence: 99%

Performance descriptors of nanostructured metal catalysts for acetylene hydrochlorination

et al. 2022

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Controlling the precise atomic architectures of supported metals is central to unlock their potential as heterogeneous catalysts, as recently exemplified for nanostructured platinum and ruthenium systems in acetylene hydrochlorination, a key industrial technology for vinyl chloride production. This opens the possibility to build on historically established activity correlations. Here, we derive quantitative activity, selectivity, and stability descriptors, accounting for the metal-dependent speciation and host effects. To achieve this, we generate a platform of Au, Pt, Ru, Ir, Rh, and Pd single atoms and nanoparticles supported on functionalized carbons and assess their evolution during synthesis and under reaction conditions. Combining kinetic, transient and chemisorption analyses with modelling, we identify the acetylene adsorption energy as a speciation-sensitive activity descriptor, further determining the catalyst's selectivity with respect to coke formation.The stability of the different metal nanostructures is governed by the interplay between single atomsupport interaction and the chlorine affinity, promoting redispersion or agglomeration, respectively.

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“…A previous work by Corma et al demonstrated that Au NPs were a highly efficient catalyst for the nucleophilic addition of HCl to terminal alkynes. 56 Therefore, this reaction was selected as a model reaction here due to the involvement of high HCl concentration which highlights the necessity to use an acid stable catalyst. We aim to study whether the hollow MOF-801 shell can enable size selective catalyst between a small alkyne, 4-ethynyltoluene (EL), and a bulky alkyne, 1-ethynylnaphthalene (EN).…”

Section: Resultsmentioning

confidence: 99%

A robust hollow metal–organic framework with enhanced diffusion for size selective catalysis

Zhao

Wang

et al. 2022

Chem. Sci.

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Partial Reduction and Selective Transfer of Hydrogen Chloride on Catalytic Gold Nanoparticles

Cited by 14 publications

References 41 publications

Metal Catalysts for Heterogeneous Catalysis: From Single Atoms to Nanoclusters and Nanoparticles

Metal Catalysts for Heterogeneous Catalysis: From Single Atoms to Nanoclusters and Nanoparticles

Performance descriptors of nanostructured metal catalysts for acetylene hydrochlorination

A robust hollow metal–organic framework with enhanced diffusion for size selective catalysis

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