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Article
Open AccessSelective formation of acetate intermediate prolongs robust ethylene removal at 0 °C for 15 days
Efficient ethylene (C2H4) removal below room temperatures, especially near 0 °C, is of great importance to suppress that the vegetables and fruits spoil during cold-chain transportation and storage. However, no ...
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Article
Open AccessAnti-inflammatory effect of gold nanoparticles supported on metal oxides
Gold (Au) can be deposited as nanoparticles (NPs) smaller than 10 nm in diameter on a variety of metal oxide (MOx) NPs. Au/MOx have high catalytic performance and selective oxidation capacity which could have ...
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Article
Open AccessBulk tungsten-substituted vanadium oxide for low-temperature NOx removal in the presence of water
NH3-SCR (selective catalytic reduction) is important process for removal of NOx. However, water vapor included in exhaust gases critically inhibits the reaction in a low temperature range. Here, we report bulk W-...
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Article
Open AccessBoosting the catalysis of gold by O2 activation at Au-SiO2 interface
Supported gold (Au) nanocatalysts have attracted extensive interests in the past decades because of their unique catalytic properties for a number of key chemical reactions, especially in (selective) oxidation...
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Chapter
Gold Nanoparticles for Oxidation Reactions: Critical Role of Supports and Au Particle Size
Supported gold nanoparticles (Au NPs) exhibit unique catalytic properties for the oxidation of organic compounds. The catalytic activities and the selectivities of the supported Au catalysts largely depend on ...
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Article
Open AccessRemarkable active-site dependent H2O promoting effect in CO oxidation
The interfacial sites of supported metal catalysts are often critical in determining their performance. Single-atom catalysts (SACs), with every atom contacted to the support, can maximize the number of interf...
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Article
Open AccessPopulation and hierarchy of active species in gold iron oxide catalysts for carbon monoxide oxidation
The identity of active species in supported gold catalysts for low temperature carbon monoxide oxidation remains an unsettled debate. With large amounts of experimental evidence supporting theories of either g...
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Article
Ethanol Oxidation in Water Catalyzed by Gold Nanoparticles Supported on NiO Doped with Cu
Ethanol oxidation in water by molecular oxygen on supported gold nanoparticles (NPs) has been investigated at a temperature as low as 120 °C. Among various base metal oxide supports, NiO provided the highest c...
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Article
Catalytically highly active top gold atom on palladium nanocluster
Different mechanistic processes explaining the catalytic activities of supported gold catalysts have been proposed. Au–Pd colloidal nanoclusters are now shown to exhibit high catalytic activity owing to an abu...
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Article
Gas-phase propene epoxidation over coinage metal catalysts
Propene oxide (PO) is a very important bulk chemical and is produced on a scale of about 7.5 million tons per year. In industry, PO is produced via multiple reaction steps in the liquid phase, using hazardous ...
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Article
One-step synthesis of magnetically recyclable Au/Co/Fe triple-layered core-shell nanoparticles as highly efficient catalysts for the hydrolytic dehydrogenation of ammonia borane
Magnetically recyclable Au/Co/Fe core-shell nanoparticles (NPs) have been successfully synthesized via a one-step in situ procedure. Transmission electron microscope (TEM), energy dispersive X-ray spectroscopic (...
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Article
Sequential HAADF-STEM observation of structural changes in Au nanoparticles supported on CeO2
Sequential high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) was used to clarify the detailed process of structural changes in Au/CeO2 catalysts found in our previous TEM observ...
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Article
Synthesis of Acetoaldehyde, Acetic Acid, and Others by the Dehydrogenation and Oxidation of Ethanol
Following gradual shift of primary resources from fossil towards renewable ones in chemical industry, biomass based ethanol has been attracting growing interests as a fuel to replace gasoline and as a chemical...
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Article
Open AccessOne-potN-alkylation of primary amines to secondary amines by gold clusters supported on porous coordination polymers
Gold clusters and nanoparticles were deposited on the three kinds of porous coordination polymers (PCP5), MOF-5, CPL-2, and AI-MIL53 by the solid grinding method. The size of Au particles depended on the kinds...
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Article
Low-temperature oxidation of CO catalysed by Co3O4 nanorods
Tricobalt tetraoxide (Co3O4) has been much investigated as a potential catalyst for the low-temperature oxidation of carbon monoxide, useful for example in automotive emission control. Although this material is a...
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Article
TEM and STEM study of the Au nano-particles supported on metal oxides
The Au nano-particles are deposited on the metal oxide substrate, TiO2 and CeO2, and the structure of the Au particles and Au-metal oxide interface was observed by TEM and HAADF-STEM. It was found that the growth...
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Article
Open AccessTheoretical study of H2O and O2 adsorption on Au small clusters
Hybrid Density functional calculations have been carried out for Au10, Au10-H2O, Au10-O2, and Au10-H2 O-O2 model clusters. The results show that all the Au10 clusters examined have a weak interaction with H2O and...
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Article
Gas-phase radical generation by Ti oxide clusters supported on silica: application to the direct epoxidation of propylene to propylene oxide using molecular oxygen as an oxidant
A new catalytic system consisting of titanium oxide clusters supported on silica was found for radical production at relatively low temperature (~573 K). The clusters give rise to selective oxidation products,...
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Article
Analytical TEM Observation of Gold Nano-Particles on Cerium Oxide
The structure of Au nano-particles supported on CeO2 was investigated by using an analytical transmission electron microscope (TEM). The shape change of Au particles was observed during TEM observation, such as s...
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Article
Gold rush
The chemical industry would be transformed if selective oxidation of hydrocarbons could be achieved efficiently using cheap and clean oxygen from the air. Doing that with gold as a catalyst is a method gaining...
