By use of operando spectroscopies under cycling reaction conditions, water is shown to hamper the redox dynamics realistic palladium oxide nanoparticles dispersed onto alumina and hydrophobic zeolite supports thereby lowering activity for total oxidation methane. Water adsorption forms hydroxyl ad-species that block methane oxygen dissociation seem prevent lattice take part in oxidation. The ma...

The extensive demand for cleaner environment is forcing the chemical industry to use less hazardous materials. In this regard, solid catalysts have lately attracted the attention of scientists and researchers around the world.1–8 By using sufficient amounts of these heterogeneous catalysts, their catalytic activity for ester formation can be equivalent to that of conventional homogeneous cataly...

Abstract Zn-doped NaA molecular sieves were prepared by hydrothermal method using zinc nitrate, sodium metaaluminate, silica sol, etc. as raw materials. The samples characterized XRD, SEM, FT-IR, etc., 300W xenon lamp the light source. Rhodamine B (RhB) was used target degradant for photocatalytic experiments its activity. results showed that ion doping increased number of active sites on sieve...

Glycerol hydrogenolysis represents one of the most promising technologies for future bio-refineries. In this context, kinetic modeling provides key quantitative assessment significance various reactions process development. However, as present, there are only limited studies on detailed glycerol conversion to 1,2-propanediol, ethylene glycol and other alcoholic products. work, a comprehensive s...

Piranha solution is a highly acidic mixture of sulfuric acid and hydrogen peroxide. The present study aimed at developing dimensionally stable anode (DSA), made titanium metal foil coated with Ruthenium Dioxide (RuO2), for the electrochemical oxidation peroxide in presence strong under ambient conditions. Results showed that piranha was fully degraded 5 h constant current 2 A (or density 0.32 A...

acetylene dose due to the high supply of hydrogen. Moreover, methane should not be formed, since there should not be any dissociation of acetylene on the surface. Figure 11 shows the result of an experiment in which the surface was precovered with a monolayer of hydrogen. The first dose of acetylene (0.2 X 1015 molecules of C2H2 cm-2) leads to an enormous increase in the hydrogen pressure and t...

Absolute ground state atomic hydrogen densities were measured, by the utilization of two-photon absorption laser induced fluorescence, in a low-pressure electron cyclotron resonance plasma as function nitrogen admixtures—0 to 5000 ppm. At admixtures 1500 ppm and higher, spectral distribution fluorescence changes from single Gaussian double distribution; this is due separate, nascent contributio...

A series of different M/TiO2 catalysts are prepared, where M = Au, Pt, Pd and Ag, with a 0.2 wt% loading, tested for activity as photocatalysts the water gas shift reaction, WGSR, using continuous flow, phase reactor. For both thermal (dark) photocatalytic (UV irradiated) WGSR best catalyst/photocatalyst is Au/TiO2. The kinetics studied function reactor temperature, Au loading concentrations CO...