The electron transfer reaction across the 1,6-dichlorohexane (1,6-DCH)|water (W) interface where bis(pentamethylcyclopentadienyl)iron(II/III) ([FeII/III(C5Me5)2]0/+) as the organic redox couple in 1,6-DCH is present in excess has been studied by cyclic voltammetry. The 1,6-DCH|W interface gave a...

The 1H NMR spectra of a series of thirty substituted methyl π-(tricarbonyl-chromium)benzoates (and the corresponding free ligands) have been recorded and analysed. A comparison of the chemical shifts of the aromatic protons in the complex and ligand often allows conclusions regarding the prefer...

The electrocatalytic oxidation of ferrocene (Fc) at neutral pH in aqueous solution has been studied over thin films of electroactive sulfonated polyaniline (SPAN) by cyclic voltammetry. Strong adsorption of the oxidised species (ferrocenium ion) on the polymer arises as the explanation for the n...

We report DFT calculations of the redox potential for the ferrocenium/ferrocene couple in acetonitrile. This system is generally used as an internal reference for non-aqueous solutions and is commonly used for redox potential determination of metal complexes. The set of functionals evaluated inc...

The heats of reaction of arene, cycloheptatriene, and cyclooctatetraene complexes of molybdenum tricarbonyl with pyridine yielding (py)3Mo(CO)3 have been measured by solution calorimetry. Reaction of toluene molybdenum tricarbonyl with cyclopentadiene yielding HMo(CO)3C5H5 and with tetrahydrofur...

Photolytic reaction of pentacarbonyl [(methoxy)(methyl)carbene] chromium(0) with tricarbonyl(cycloheptatriene) chromium(0) afforded an isomeric mixture of bicyclo[4.2.1]nonanone products.

Isochronal annealing studies of ytterbium-implanted cadmium telluride and ytterbium-implanted zinc telluride have been made by monitoring the cathodoluminescence emission spectra at 77 K. The Yb3+ ions become optically active after annealing at 130°C and 220°C in cadmium telluride and zinc tel...

p-Pb0.925Yb0.075Te:Te and n-Pb0.925Yb0.075Te powders were used in a standard synthesized solid-state microwave method to fabricate thermally evaporated thin films. The composition and microstructure of the films were studied by using X-ray diffraction and field emission scanning electron microsc...

X-ray Absorption Fine Structure (XAFS) measurements were performed on uniformly doped PbTe:Yb (1.3 at.%) at all elemental absorption edges and the analysis of the results has provided precise information on the local structure around each atom. From the near edge part of the absorption spectra i...

Single crystal samples of lead-telluride doped with Ytterbium were made using the Bridgman method. Far infrared reflectivity spectra in the temperature range from 10 to 300 K were measured. Analysis of the experimental spectra was made using a fitting procedure based on the model of plasma-phono...

Monometallic indium-doped Pt/Al2O3catalysts for n-heptane reforming were studied using the low-temperature adsorption of nitrogen, XRD, NH3-TPD, and H2-TPR. The introduction of indium at the step of aluminum hydroxide peptization increases SBET of the produced alumina and decreases its size of c...

In this work a novel strategy for bio-methane production and magnesium chloride waste valorization is addressed. The proposed process is a potential alternative path to the already existing biogas upgrading technologies by carbon dioxide mineralization into valuable magnesium carbonate. The main...

Formulating active pharmaceutical ingredients (APIs) in the amorphous state can increase their apparent aqueous solubility and dissolution rate and consequently improve their bioavailability. This study demonstrates, for the first time, the ability to stabilize an API in the amorphous state usin...

Magnesium slag, an industrial byproduct containing high contents of CaO and MgO, was activated with CO2 to prepare calcium carbonate binders via accelerated carbonation. The mechanical strength, microstructure, and volume stability of the carbonate binders were investigated. Results show that ca...

Mesoporous magnesium carbonate (MMC) was synthesized and tested for its ability to separate CO2 from N2. The pure gas CO2 uptake of MMC was around 1.5 mmol/g at 101 kPa, 0 °C. The N2 uptake under the same conditions was less than 0.1 mmol/g. Al(NO3)3, Al2O3, K2CO3 and KNO3 were introduced into ...

We report the template-free, low-temperature, environment-friendly synthesis of amorphous magnesium carbonate nanoparticles (AMN). Scanning electron microscopy and transmission electron microscopy show that AMN consist of small nanoparticles approximately 20–65 nm in diameter. Drying temperatur...

The tensile creep behavior of a Lu-doped silicon nitride was studied in the temperature range 1400–1550 °C with test periods of up to 10 200 h. Strain rates were 3–4 orders of magnitude less than those for Yb-doped grades of silicon nitride under the same conditions, suggesting a potential fo...

Copper-base active metal interlayers were used to bond in situ reinforced silicon nitride (Honeywell AS800) at 1317 K for 5 and 30 min in vacuum. The joints were characterized using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), electron back scattered diffraction (EBS...

Various silicon nitride materials were fabricated by pressureless sintering using lutetia and alumina as sintering additives. Densification behavior, microstructure, strength and formation of secondary crystalline phases were investigated. The combination of Lu2O3/Al2O3 sintering aids can promot...

A heat-resistant SiC ceramic was developed from submicron β-SiC powders using a small amount (1 wt.%) of AlN–Lu2O3 additives at a molar ratio of 60:40. Observation of the ceramic using high-resolution transmission electron microscopy (HRTEM) showed a lack of amorphous films in both homophase (...