Acidic character of metal-loaded amorphous and crystalline silica-aluminas determined by XPS and adsorption calorimetry

Article Abstract:

The acid character of metal ion loaded zeolite and silica-alumina samples was pictured by means of the XPS technique which was combined with microcalorimetry. Co, Cu and Ni ions were loaded on ZSM-5 and SiO2-Al2O3 by three different procedures. These were impregnation, ion exchange and solid-state ion-exchange. High values of the 2 p3/2 XPS bands of the metal ions were presented by the samples prepared by ion exchange of the two matrixes.

Metal ions, Acidity function

---

Influence of the preparation method on the surface characteristics and activity of boron-nitride supported noble metal catalysts

Article Abstract:

Study is presented to show how variations in the preparation method of boron-nitride-supported noble metal catalysts may influence the surface characteristics of the active phase and consequently the potential applications as catalysts for oxidation reactions. The catalytic performances of these materials are tested in the total oxidation of methane in lean conditions.

All Other Basic Inorganic Chemical Manufacturing, Boron & Compounds, Industrial inorganic chemicals, not elsewhere classified, Electric properties, Chemical reactions, Boron compounds, Nitrides

---

Surface-controlled gas-phase deposition and characterization of highly dispersed vanadia on silica

Article Abstract:

Vanadyl triisopropoxide precursor was verified to be an appropriate precursor for the synthesis of highly dispersed V2O5/SiO2 materials by the gas-phase atomic layer deposition (ALD) technique. The controlled and reproducible chemisorption-based growth of vanadia on silica occurred in a temperature range from 363 to 393 K.

Industrial sand, Silica & Silica Sand, Industrial Sand Mining, Structure, Vanadium compounds

Similar abstracts:

• Abstracts: The characterization of photoinduced chirality in a liquid-crystalline azo polymer on irradiation with circularly polarized light
• Abstracts: Hydrocarbon sensing mechanism of surface ruthenated tin oxide: an in situ IR, ESR, and adsorption kinetics study
• Abstracts: Fractal dimension of cellulose powders analyzed by multilayer BET adsorption of water and nitrogen. Structural changes in phase transitions of nylon model compounds.1.transition behavior of model compounds of R-NHCO-R' type
• Abstracts: Structural characterization of self-organized TiO(sub 2) nanoclusters studied by small angle neutron scattering
• Abstracts: Characterization of the tryptophan residues of human placental ribonuclease inhibitor and its complex with bovine pancreatic ribonuclease A by steady-state and time-resolved emission spectroscopy

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.