Methods for transforming rare earth (RE) sulfate into chloride mainly include extraction process with organophosphonic mono-acids or aliphatic acids and precipitation process with ammonium bicarbonate (NH4HCO3). In this paper, alkylphenoxy carboxylic acids(HAs) of p-dodecylphenoxy acetic acid(HA...

Trace amounts of iron impurity in manganese sulfate solution will seriously affect the quality of manganese products if it is not purified. In this study, we utilized mechanically activated CaCO3 to remove iron from manganese sulfate solution by co-grinding CaCO3 with manganese sulfate solution ...

Iron hydroxysulphate phases, such as hydronium jarosite and basic ferric sulphate, precipitate with hematite, which reduces the hematite quality and its potential for marketing. The factors of temperature, time, initial ferric and Zn2+ concentrations, and amount of hematite seed that have either...

An investigation on Bi-Th alloys was performed using X-ray and metallographic analyses and measurements of the heats of formation. The crystal structures of Th3Bi4 (c128, Th3P4 type) and ThBi2(tP6, Cu2Sb type) were confirmed; moreover two phases with an hP16, Mn5Si3-type structure and a cP2, CsC...

Hydrolysis and speciation of aluminium sulfate octadecahydrate Al2(SO4)3·18H2O was studied by electrospray time of flight mass spectrometry (ESI TOF MS). Several novel polymeric species were determined. Highly charged polymers, characterized by other methods, such as the Keggin cation [Al13O4(O...

Due to the diversity of in situ hydrolyzed aluminum species and discrepancy in the binding sites of humic acid (HA), the mechanisms involved in HA removal were significantly different in inorganic particle removal. Based on the background, the coagulation behavior of in situ and performed hydrol...

Copper sulfate is presented as a viable draw solute in forward osmosis (FO) for brackish water desalination. In this study, the osmotic pressure of copper sulfate was calculated as a function of concentration. An investigation into the osmotic pressure revealed that copper sulfate draw solution ...

The hydrogen production by reaction of aluminum foils and powders with KOH aqueous alkaline solutions was studied. Effect of different physical factors on the specific hydrogen production rate was analyzed. The efficiency of activation of aluminum by copper was examined. Three variants of contac...

The present work describes an investigation of a chemical process for the recovery of copper and iron from malachite ore. For the dissolution of copper and iron, H2SO4 was employed as well as H2O2 as an oxidizing agent. The effects of reaction temperature and time, acid concentration, liquid-to-...

The aim of present study was to formulate and evaluate a self-microemulsifying drug delivery systems (SMEDDS) containing lovastatin and to further explore the ability of porous Neusilin® US2 tablet as a solid carrier for SMEDDS. SMEDDS formulations of varying proportions of peceol, cremophor RH ...

Control and optimization of the physical properties of a drug substance (DS) are critical to the development of robust drug product manufacturing processes and performance. A lack of isolatable, for example, crystalline, DS solid forms can present challenges to achieving this control. In this st...

Solid lipid-based drug delivery systems combine the advantages of solid dosage forms and the solubilizing potential of lipophilic vehicles. In spite of the fact that many methods were proposed for the solidification of liquid lipid formulations, there is no data on the application of the fluid-b...

In this present work, the delafossite type CuCr1-xFexO2 (x = 0–1) nanopowder was prepared by a self-combusted glycine nitrate process used for the steam reforming of methanol (SRM). The effectiveness of hydrogen production was upgraded by the preparation of CuCr1-xFexO2 (x = 0–1). The prepared...

The solid-state structures of 1′,1‴-biferrocenediboronic acid (1) were elucidated by X-ray crystallography, to obtain insight into controlling the structures of hydrogen-bonded (H-bonded) assemblies from a functional organobimetallic building block. Four solvated crystal forms of 1 were newly o...

In this work, two new para-xylyl linked bis-imidazolium Ionic Liquids (DILs), namely [p-C6H4(CH2ImMe)2][Cl−]2 and [p-C6H4(CH2ImMe)2+][BF4−]2, are prepared from imidazolium salts using a simple procedure in two steps.A computational study of the conformers of [p-C6H4(CH2ImMe)2], performed by mean...

Metalloid element doping is a novel strategy to improve the properties of hydrogen permeable membranes. Herein, phosphorus doping was applied to enhance the hydrogen separation performance of lanthanum tungstate membrane for the first time. The effects of P content on the hydrogen permeability o...

Hydrogen-rich cation radicals of 2′-deoxycytidine dinucleotide, (dCC + 2H)+●, were generated by electron transfer dissociation of their doubly charged complexes with crown ethers and found to be stable in the gas phase. The (dCC + 2H)+● ions were calculated to be formed with ca. 280 kJ mol-1 ...

Intramolecular hydrogen bonding interactions together with non-covalent cation-π interactions of the Na+ cation in 4-substituted-8-hydroxyquinolines were investigated using quantum mechanical calculations to know results of reciprocal effects of these interactions. Also, cation-π interactions ...

In the present work, NaBH4 based hydrogen storage materials, 3NaBH4-(x)YF3-(1-x)GdF3 composites, were prepared via mechanical ball milling with different values of x (2/3, 1/2, 1/3). The de-/rehydrogenation thermodynamic and kinetic behaviors of 3NaBH4-(x)YF3-(1-x)GdF3 composites were systematic...

The hydrogen evolution reaction (HER) is an ideal model to explore the effect between the activity and the surface vacancy of catalysts. Compared to the anion vacancy, the cation vacancy is more challenging to selectively generate due to the large formation energy, and the serious lack of insigh...