The observation of Manchot? that sodium pentacyano-ammineferroate2 I absorbs oxygen has led Baudisch and his coworkers3 to study the catalytic action of this salt, as well as of its water analogue II, in the oxidation of pyrimidines and purines. The present authors have previously reported in this journal4 on the nature of the oxidation products obtained. In the present paper the problem is con...

A new catalyst composed of Pd nanoparticles supported on MgO has been prepared by the room temperature NaBH(4) reduction of Na(2)PdCl(4) in methanol in the presence of the support. TEM measurements reveal well-dispersed Pd particles of mean diameter 1.7 nm attached to the MgO surface. Further characterization was achieved by ICP-AES, XPS, XRD, H(2) pulse chemisorption and H(2)-TPR. The new cata...

A novel photocatalyst based on TiO2-PANI composite supported on small pieces of cork has been reported. It was prepared by simple impregnation method of the polyaniline (PANI)-modified TiO2 on cork. The TiO2-PANI/Cork catalyst shows the unique feature of floating on the water surface. The as-synthesized catalyst was characterized by X-ray diffraction (XRD), scanning electron micrograph (SEM), t...

Controlled synthesis of both single-walled carbon nanotube and carbon nanowire networks using the same CVD reactor and Fe/Al(2)O(3) catalyst by slightly altering the hydrogenation and temperature conditions is demonstrated. Structural, bonding and electrical characterization using SEM, TEM, Raman spectroscopy, and temperature-dependent resistivity measurements suggest that the nanotubes are of ...

This article reviews the surface science of the heterogeneous olefin polymerization catalysts. The specific focus is on how to prepare and characterize stereochemically specific heterogeneous model catalysts for the Ziegler-Natta polymerization. Under clean, ultra-high vacuum conditions, low-energy electron irradiation during the chemical vapor deposition of model Ziegler-Natta catalysts can be...

A novel and facile synthetic method for h-BN films from borazine oligomer (B3N3H4)x precursors has been developed. This method only includes spin-coating of borazine oligomer onto nickel catalysts and a subsequent annealing step. Large areal and highly crystalline h-BN films were obtained. The stoichiometric B/N ratio of borazine oligomer precursor was preserved in the final h-BN product such t...

Type of packings and characteristics of their geometry can affect the flow behavior in the reactive distillation columns. KATAPAK SP is one the newest modular catalytic structured packings (MCSP) that has been used in the reactive distillation columns, recently. However, there is not any study on the hydrodynamics of this packing by using computational fluid dynamics. In the present work, a 3D ...

Abstract A nickel ferrite was prepared by a liquid‐phase method and used as an oxygen evolution catalyst in anion exchange membrane electrolyser. complete physicochemical characterization of the performed through X‐ray diffraction (XRD), Transmission electron microscopy (TEM) photoelectron spectroscopy (XPS). Then, deposited spray coating technique onto Fumasep® FAA3‐50 anion‐exchange to realiz...

A combination of characterization techniques has been employed to obtain a full description of the structure and chemical state of a series of Co-W/SiO2 catalysts used for the production of single-walled carbon nanotubes (SWNT) by CO disproportionation at 750-950 °C. The state of Co and W on a series of silica-supported catalysts has been investigated using extended X-ray absorption fine struct...

1359-0286/$ see front matter 2011 Elsevier Ltd. A doi:10.1016/j.cossms.2011.06.001 ⇑ Corresponding authors. Addresses: Departmen Vanderbilt University, Nashville, TN 37235, USA Materials Science and Engineering, Lehigh Univer USA(C.J. Kiely). E-mail addresses: [email protected] (W (C.J. Kiely). The performance of catalyst materials are usually governed by the precise atomic structure and c...