A new dimorphic copper selenite bromide, Cu5(SeO3)4Br2 was obtained via chemical transport reactions. α-Cu5(SeO3)4Br2, monoclinic (1m) and β-Cu5(SeO3)4Br2, triclinic (1a) polymorphs were produced simultaneously upon reaction of amorphous, partially dehydrated copper selenite and copper bromide...

The oxidative carbonylation of alcohols to prepare corresponding dialkyl carbonates was investigated using alkali metal methylselenite [MSeO2(OCH3)] and alkali metal selenites (M2SeO3, M = Li, Na, K, Cs) as catalysts. Of various alcohols tested, methanol and 2-methoxyethanol (MEG) are found to b...

Cu(II) cations in the presence of diamine ligands such as tetramethylethylendiamine (TMEDA) react with Na2SeO3 to produce the heteroleptic selenite copper compound of formula [Cu3(TMEDA)3(SeO3)2(H2O)4](NO3)2. In the cationic moiety two copper atoms are linked by two selenite anions through the O...

In this work, luminescence properties of Tb3+/Sm3+ co-doped lead borate glasses are examined in details. Luminescence spectra of rare earths were measured under different excitation wavelengths. Characteristic luminescence bands corresponding to electronic transitions of terbium and samarium ion...

Fully amorphous lead borate glasses triply doped with Dy3+/Tb3+/Eu3+ were synthesized and next studied using optical spectroscopy. The characteristic luminescence bands originating to electronic transitions of Dy3+/Tb3+/Eu3+ ions were observed under direct excitation of Dy3+. Moreover, the influ...

The fluorometric measurement of butaperazine following its extraction from human plasma by a three step procedure and a buffer wash to eliminate interfering metabolites is described. Procedures confirming the specificity and reproducibility of the method were done, and a sensitivity of 20 ng/ml ...

A novel coprecipitation process was developed to prepare lignin/silica hybrids using sodium metasilicate and alkali lignin (AL) from pulping black liquor. AL was first modified by quaternization to synthesize quaternized alkali lignin (QAL). The QAL/SiO2 hybrids with different contents of lignin...

The thermal behavior of a mixture of sodium metasilicate, aluminum hydroxide and silicagel has been studied. The mixture was intended for the NaP zeolite synthesis; the atomic ratio of Si:Al was 2:1. To intensify heterophase processes in suspensions, the ultrasonic treatment with a frequency of ...

Sodium metasilicate pentahydrate (SMP), a type of hardening-accelerator, was widely used in cement slurry to enhance its early strength. In this study, we found that SMP had an novel ability to adjust the compatibility between 2-Acrylamido-2-Methyl Propane Sulfonic Acid (AMPS)-based Fluid Loss A...

Synthesis of dense magnesium aluminate spinel using a single stage solid oxide reaction is difficult owing to volume expansion associated with spinel formation. In the present work, reaction sintered magnesium aluminate spinel was prepared using commercial grade oxide in a single stage solid oxi...

The authors focused on a mixture of magnesium nitrate hexahydrate as a base material and magnesium chloride hexahydrate as an additive to store and utilize urban waste heat from emerged co-generation systems, typically available at temperatures of 60–90 °C. The second paper revealed that this ...

The objective of this study is effective utilization of urban waste heat from emerging co-generation systems, typically available at temperatures of 60–100 °C. The authors investigated latent heat storage by materials with phase change temperatures in the above range, and focused on a mixture ...

The processes of electrochemical deposition of magnesium oxide/hydroxide on glassy carbon (GC) electrode from magnesium nitrate hexahydrate melt have been investigated. A novel procedure predicting a possibility of direct formation of magnesium oxide during electrodeposition from the nitrate mel...

Single crystals of the congruently melting equimolar mixture of magnesium nitrate hexahydrate and nickel nitrate hexahydrate have been grown. The compound crystallizes in a structure foreign to both components, namely in the monoclinic cobalt nitrate hexahydrate structure. The cations are locate...

The role of London dispersion forces in crystalline magnesium nitrate hexahydrate [Mg(NO3)2·6H2O] has been investigated using terahertz spectroscopy and solid-state density functional theory modeling. The solid-state simulations were augmented with semi-empirical London dispersion corrections a...

A series of glass specimen [Na2WO4.2H2O]1−x[Fe2O3]x with x = 0, 0.10, 0.15, 0.20 and 0.25 were prepared. The infrared absorption spectra of these sodium tungstate dihydrate glass specimens containing iron oxide have been studied as a function of iron oxide. It was found that the addition of Fe2O...

A single crystal of monoclinic sodium dichromate dihydrate was investigated by FTIR-spectroscopy in the spectral region of 4000–80 cm−1. On the measured reflection spectra dispersion analysis was performed to gain the oscillator parameters of the transition dipole moments of Na2Cr2O7·2H2O and ...

Temperature-dependent vibrational (Raman and infrared) spectroscopy and X-ray diffraction studies have been performed on polycrystalline Na2WO4⋅2H2O and Na2MoO4⋅2H2O crystals. Raman data at low temperature 13–300 K for sodium tungstate Na2WO4⋅2H2O was compared with the sodium molybdate Na2MoO4⋅...

A key hydrolysis product of vanadocene dichloride was isolated and structurally characterized. The oligomeric character of the species precludes its detection by classical EPR spectroscopic tools. A detailed study of the with high purity reagents disproves appearance of Cp2V(OH)2, which was post...

A class of vanadium complexes were prepared and investigated for their antiproliferative effects by MTT assay. The structure-activity relationship was extensively studied through the ligand variation. The results showed that the synthetic vanadium complexes demonstrated moderate to good antiprol...