A wet chemical preparation of MgO with the (111) facet as the primary surface has recently been reported and with alternating layers of oxygen anions and magnesium cations, this material shows unique chemical and physical properties. The potential to utilize the MgO(111) surface for the immobilization of metal particles is intriguing because the surface itself offers a very different environmen...

Compared with pristine polymers, bionanocomposites derived from biopolymers and inorganic nanoparticles have significantly improved electrical/magnetic properties, mechanical properties, thermal stability, gas barrier properties, and fire retardance. In this study, poly(lactic acid) (PLA) nanocomposites were prepared by in situ melt polycondensation of L-lactic acid with different loading ratio...

The nature of source rocks of basaltic magmas plays a fundamental role in understanding the composition, structure and evolution of the solid earth. However, identification of source lithology of basalts remains uncertainty. Using a parameterization of multi-decadal melting experiments on a variety of peridotite and pyroxenite, we show here that a parameter called FC3MS value (FeO/CaO-3*MgO/SiO...

We have studied the elasticity and pressure-density equation of state of MgO in diamond cells to 55 GPa and have doubled the previous pressure limit of accurate elasticity determinations for crystals. Integrating single-crystal velocity data from Brillouin scattering measurements and density data from polycrystalline x-ray diffraction, we obtained the three principal elastic tensor elements (C(...

The aim of the current work is the synthesis and characterization of metallic Zr nanoparticles. The preparation is carried out by using the RAPET method (Reaction under Autogenic Pressure at Elevated Temperatures) developed in our lab. The RAPET reaction of commercial ZrO(2) with Mg powder was carried out in a closed stainless steel cell, at 750 °C. On completion of the reaction, the additional...

Abstract The reaction mechanism of plasma‐catalytic ammonia synthesis is not fully understood. MgO supported Ru, Co, Pt, Pd, Cu and Ag catalysts are tested in a DBD plasma at temperature between room 500 °C power 3.8 W 6.4 W. resulting production the presence catalyst can be distinguished into (1) temperature‐independent plasma‐based synthesis, (2) temperature‐dependent synthesis. Turn‐over‐fre...

β-Si3N4 whiskers were synthesized by using a moderately low-temperature heat-treatment process, with the aid of low weight fraction multiple aids (Y2O3-MgO). The synthesis conditions and aspect ratio adjusted changing MgO content in composite additive system, heat treatment temperature holding time. phase composition morphology analyzed XRD SEM, respectively. transformation could be completed a...

A relatively simple model, the associate species model, is being applied to nuclear waste glass compositions in order to accurately predict behavior and thermodynamic activities in the material. In the model, the glass is treated as a supercooled liquid, with the liquid species allowed to exist below their melting point. The approach requires an initial assembly of binary and ternary oxide liqu...

A Ni/meso-MgO catalyst with high surface area and small Ni nanoparticles was synthesized and investigated for hydrogen production by steam reforming of phenol for the first time. Compared to conventional Ni/MgO, the Ni/meso-MgO catalyst showed higher catalytic activity and stability. X-ray Diffraction, N2 adsorption, hydrogen temperature programmed reduction, transmission electron microscopy an...

In the present paper, effect of La2O3 (0.25, 0.5 and 1 wt.%) addition on phase stability, porosity, density, hardness, fracture toughness, compressive strength brittleness index hydroxyapatite modified with wt.% MgO was investigated. Hydroxyapatite (HA) without additives sintered at 1300?C has mixture dominant beta-tricalcium phosphate (?-TCP), alpha-tricalcium (?-TCP) calcium oxide (CaO) phase...