Highly oxidizing nitrate radicals (NO3˙) are easily accessed from readily available nitrate salts by visible light photoredox catalysis using a purely organic dye as the catalyst and oxygen as the terminal oxidant. The interaction of the excited catalyst and nitrate anions was studied by spectroscopic methods to elucidate the mechanism, and the method was applied to the NO3˙ induced oxidation o...

A three dimensional (3D) hierarchical silver supported tungsten oxide flower-like microsphere catalyst has been fabricated using a cationic surfactant CTAB. It was found that the crystal-splitting mechanism plays a key role in the formation of this flower-like structure. This catalyst was proved to be highly effective in the liquid phase selective oxidation of m-xylene to isophthalic acid.

A mesoporous PtCu catalyst modified with a Ru submonolayer is successfully synthesized by a facile electrochemical process of electrodeposition, dealloying and Ru underpotential deposition. The material has a large specific surface area comparable to nanoparticles (11 m(2) g(-1)) and exhibits a promising catalyst activity for the methanol oxidation reaction.

A surprisingly high and stable current was observed after the peak current on the PdHoOx/C catalyst indicating the diminished poisoning effect. Moreover, the novel PdHoOx/C catalyst exhibited excellent catalytic activity and stability for formic acid oxidation due to the large electrochemical surface area and electronic effect.

Ca-doped cerium phosphate (CeCaPO(4)) has been newly developed and successfully used as catalyst support with superior ion-exchanged property and oxygen activation ability. Ru(3+) exchanged CeCaPO(4) is identified as an efficient catalyst for aerobic oxidation of alcohols with the highest TOF (∼408 h(-1)) reported so far on supported Ru catalysts.

Aerobic oxidation of alcohols in the liquid phase proceeded smoothly in the presence of nanoporous gold catalyst. The catalyst is reusable multiple times without leaching and loss of the catalytic activity. The reaction was applied successfully to a flow system. Adsorptions of O(2) and 1-phenylethanol into the AuNPore were confirmed by TDS analysis.

An embedded catalyst for the oxidative dehydration of glycerol, featuring iron oxide (FeO(x)) domains on the surface of an iron orthovanadate (FeVO₄) phase, is developed. Catalytic reactions are conducted in a fixed-bed reactor at 300 °C with a feed composition N₂/O₂/H₂O/glycerol=66.6:1.7:30.3:1.5. Catalytic results show that the catalyst exhibits a better performance than an FeO(x) catalyst pr...

Recently, the authors described the catalytic elimination of nitrogen oxide from crm hydrogen [1], in the course of which a secondary contamination of gas with cark dioxide occurred in a plant in Slovakia. This fact stimulated the authors to study th undesirable reaction, i.e. oxidation of carbon monoxide by oxygen. The oxidation of carbon monoxide with respect to industrial usage has been stud...

Nickel-iron oxides/hydroxides are among the most active electrocatalysts for the oxygen evolution reaction. In an effort to gain insight into the role of Fe in these catalysts, we have performed operando Mössbauer spectroscopic studies of a 3:1 Ni:Fe layered hydroxide and a hydrous Fe oxide electrocatalyst. The catalysts were prepared by a hydrothermal precipitation method that enabled catalyst...

When Au is subdivided to the nanoscale its reactivity changes from an inert nature to one of incredible reactivity which is not replicated by other catalysts. When dispersed onto metal oxides such as TiO2, nano-Au has shown high reactivities for a multitude of reduction and oxidation reactions of industrial importance with potential and current uses such as, CO oxidation, NO x reduction, purifi...