Showing papers in "Journal of Catalysis in 2006"

TL;DR: The most active catalysts were formed when Fe was added to the support before the pyrolysis; however, samples in which Ni or no metal was added still showed increased activity for oxygen reduction compared with untreated carbon as mentioned in this paper.

TL;DR: In this article, the authors investigated the sintering inhibition mechanism of Pt in a Pt/ceria-based oxide catalyst under oxidizing condition at high temperature using X-ray absorption analysis.

TL;DR: In this article, an ion exchange resin (Amberlyst), H2SO4(aq), and HCl(aq) was used for glycerol hydrogenation.

TL;DR: Au catalysts with different metallic particle sizes and supported on silica, alumina, titania, zirconia, ceria, and niobia were prepared, and the reduced catalysts were characterized by EXAFS spectroscopy.

TL;DR: In this paper, a chemical model for the phosphorus-zeolite interaction is proposed in which the framework aluminum pairs are stabilized by extra-framework cationic species formed by protonation of orthophosphoric acid, and the influence of isolated versus pairs of aluminum on activity and selectivity after steaming is discussed.

TL;DR: In this article, the authors report on the mechanism of the PROX reaction on Pt/CeO2 catalyst, using catalytic tests, in situ DRIFTS, high-pressure XPS, HRTEM, and TDS techniques.

TL;DR: In this article, a computational screening approach was used to design a new metal alloy catalyst for the methanation reaction (CO+3H2 → CH4 + H2O).

TL;DR: In this paper, a set of complementary experimental methods characterizing Au/α-Fe2O3 catalysts, demonstrating that cationic gold plays a crucial role in catalyzing CO oxidation at 298 K, as well as in the hydrogenation of crotonaldehyde.

TL;DR: In this paper, the role of the electronics and geometry of the reactant as well as the pore dimensions, topology, and adsorption properties of the catalyst on the rate of desulfurization were studied.

TL;DR: In this article, the metal-silica interaction and catalytic behavior of Cu-promoted Fe-Mn-K/SiO 2 catalysts were investigated by temperature-programmed reduction/desorption (TPR/TPD), differential thermogravimetric analysis, in situ diffuse reflectance infrared Fourier transform analysis, and Mossbauer spectroscopy.

TL;DR: In this paper, the use of gold on promoting PGM catalysts for the selective oxidation of various primary alcohols under mild conditions was investigated, and it was found that using these bimetallic catalysts instead of monometallic ones caused a significant change in activity in the liquid phase oxidation of alcohols.

TL;DR: In this paper, the structure sensitivity of 1-pentyne over various palladium catalysts was studied under various conditions, and the effect of carbon dissolution in the crystal lattice near the surface was evidenced by high-resolution transmission electron microscopy.

TL;DR: In this paper, the kinetics of acetic acid esterification with methanol were investigated using a commercial Nafion/silica nanocomposite catalyst (SAC-13) and H 2 SO 4, respectively.

TL;DR: In this paper, the oxidation of sulfur-containing compounds in diesel was conducted in emulsion oxidative system composed of diesel under mild conditions, and the catalytic oxidation reactivity of sulfurcontaining compounds was found to be in the following order: benzothiophene < 5-methylbenzothiophenes < dibenzothiopenes < 4,6-dimethyldibenzethiophene, and their derivatives.

TL;DR: A series of iron-based Fischer-Tropsch catalysts, either pure or promoted with Ce or Mn, were subjected to different activation treatments with H2, CO, or H2/CO as mentioned in this paper.

TL;DR: In this paper, the effects of the CeO2 support properties on the catalyst properties and performance of bimetallic Ni?Rh/CeO2 catalysts for the oxidative steam reforming (OSR) of ethanol for hydrogen production and fuel cell applications were examined.

TL;DR: In this article, the effect of the primary particle size of titanium dioxide on the reducibility of Pt/TiO2 catalysts by carbon monoxide and hydrogen was investigated using temperature-programmed reduction (TPR) techniques and in situ Raman and Fourier transform infrared spectroscopy (FTIR).

TL;DR: In this article, the photocatalytic reaction of nitric oxide (NO) on TiO 2 and transition metal-loaded M (Cu, V, and Cr)/TiO 2 catalysts was studied using in situ FTIR spectroscopy under UV irradiation.

TL;DR: In this article, a new class of catalytic materials based on nickel for the oxidative dehydrogenation of ethane to ethylene was developed, which exhibited high activity in ethane ODH and very high selectivity (∼90% ethene selectivity) at low reaction temperature.

TL;DR: In this paper, the effect of the manganese dioxide phase on the catalytic activity of pure-phase α-MnO 2 and β-mNO 2 nanowires/nanorods were synthesized through an easy solution-based hydrothermal method.

TL;DR: In this article, the size dependence of activity in gold catalysts was examined, and it was concluded that the observed decrease in activity with increasing particle size beyond 2 nm is controlled by the population of low-coordinate sites, rather than by size-dependent changes in overall electronic structure of the nanoparticle.

TL;DR: In this paper, a series of NiO−SiO2−Al2O3 catalysts were synthesized by the sol-gel method and the nature of Ni species on the support and their interaction with the support was studied.

TL;DR: In this paper, a Ni{sub 2}P catalyst supported on a high surface area SiO-sub 2 (350 m{sup 2} g{sub -1}) was prepared by temperature-programmed reduction and its structural and surface properties were studied.

TL;DR: In this article, a thin quartz capillary connected to a quadrupole mass spectrometer was moved through the catalyst with a spatial resolution of ∼0.3 mm, and the experimental profiles reveal complete O 2 conversion within 2 mm of the catalyst entrance for all C/O ratios and flows.

TL;DR: In this article, the impact of carboxylic acid chain length on the kinetics of liquid-phase acid-catalyzed esterification was investigated, and the reaction rate decreased as the number of carbons in the linear alkyl chain increased for both H 2 SO 4 and SAC-13.

TL;DR: In this article, the authors determined the surface reactivity of two Pt catalysts with average particle sizes of 2.4 nm (fresh) and 7.0 nm (sintered).

TL;DR: In this article, the performance of the CuZSM5 catalyst in the urea selective catalytic reduction (SCR) process was examined under a simulated feed gas stream containing 10% water at a temperature range of 600-800°C.

TL;DR: In this article, an autothermal reforming of methanol, ethylene glycol, and glycerol and their solutions in water was examined over platinum-and rhodium-based catalysts supported on alumina foams at a contact time of ∼10 ms.

TL;DR: In this paper, homogeneous deposition-precipitation on either a silica or carbon nanofiber (CNF) support of cobalt from basic solution using ammonia evaporation was studied and compared with conventional deposition from an acidic solution using urea hydrolysis.

TL;DR: In this paper, a two-component cocatalyst consisting of Cr and another transition metal was examined in an attempt to improve the photocatalytic activity of (Ga1−xZnx) for overall water splitting.