The thermal decomposition of methane is a technique used to manufacture hydrogen gas and carbon black. The physical properties of carbon black produced by the thermal decomposition of methane (TDM) in the O2-deficient gas products of two premixed flames (propane- or methane-air) were investigate...

Gasification of carbon black, an ash-free carbon feed, was performed with K2CO3 and either CaCO3 or BaCO3 as catalysts to examine their interaction. Mixtures were prepared by low-energy ball-milling, and then gasified with CO2 at 750–850 °C in a thermogravimetric analyzer. At temperatures belo...

Different varieties of carbon black (CB) filled rubber materials were prepared. Transmission electron microscopy was used to explore the morphology of the fillers. It shows that the connective structure of carbon black is the main factor resulting in the thermal conductivity enhancement of rubbe...

Atmospheric black carbon concentrations were measured at two urban sites (Mexico City and Monterrey), one suburban site (Juriquilla) and one high-altitude site (Altzomoni) in Mexico during 2015 and part of 2016. Black carbon concentrations were compared against other criteria gases finding a str...

Alumina fiber was fabricated by an anodic oxidation process from pure aluminum or a chemical dissolution process from porous alumina. In the experiments, porous alumina layer was firstly formed on the surface of pure aluminum by anodic oxidation process in phosphoric acid electrolyte. The alumin...

Lithium-ion batteries prepared with ceramic, powder-coated electrode separators exhibit improved safety and performance characteristics compared to those with polymeric separators prone to thermal runaway. However, electrode-coated alumina separators are thinner and more flexible than standalone...

Mechanically robust alumina ceramics with low shrinkage were successfully prepared via gelcasting using Isobam as the gelling agent and pre-sintered alumina powder as the raw material for the first time. The influence of amount of pre-sintered alumina powder and powder's pre-sintering tempe...

Alumina and alumina/SWCNT nanocomposites have been sintered by spark plasma sintering, obtaining relative densities higher than 99%. Microstuctural characterization revealed a grain microstructure in the submicron range, where alumina/SWCNT nanocomposites exhibited a good CNTs dispersion thought...

Thermal and hydrothermal stabilities of solvent deficient derived pure alumina (PA) as well as silica-doped aluminas (SDA) with three different dopant concentrations (5, 15, 27% by weight) have been investigated for changes in phase and pore structure after calcination at high temperatures under...

Crystal phases of Na+-β/β"-alumina electrolytes prepared by vapor-phase synthesis to resolve problems associated with solid-state reaction (i.e., Na2O loss at high sintering temperature and limitation to reducing the thickness) were analyzed. Na+-β/β"-alumina/YSZ composite was prepared by α...

The incorporation of refractory hard particles in alumina-based composites may inhibit grain growth of the matrix, contributing significantly to improve the mechanical properties of the composite. Al2O3-NbC nanocomposites were uniaxially hot-pressed at 1500 °C in an inert atmosphere and their m...

Aluminum monoxide (AlO) and a nonstoichiometric alumina (n-alumina) with its chemical composition similar to that of AlO were proposed theoretically for a promising low-loss plasmonic material. However, they were rarely studied due to the high thermodynamic instability. Recently, n-aluminas with...

Meso-porous structure of alumina has a narrow pore size distribution, high specific surface area with good thermal stability compared to conventional alumina. Meso-porous alumina is characterized by surface area ∼800 m2/g and pore size from 2.0 to 10 nm. This review focuses on the different pre...

The poor cycling stability of antimony during a repeated sodium ion insertion and desertion process is the key issue, which leads to an unsatisfactory application as an anode material in a sodium-ion battery. Addressed at this, we report a facile two-step method to coat antimony nanoparticles wi...

In this study, sodium metal hybrid capacitors (SMHCs) composed of a metal anode and capacitive cathode are reported for the first time. The sodium metal anode was designed using catalytic carbon nanotemplates (C-CNTPs) and exhibited highly reversible sodium metal plating/stripping behaviors with...

In the current study, hydrogen fluoride (HF) adsorption onto the sodium fluoride pellets is modeled. For this purpose a two-dimensional, non-isothermal model was developed and the governing equations were solved numerically. The contributions of diffusion transport in axial and radial directions...

In uranium conversion industry, the fluorine is used as chemical raw material gas to produce UF4 and UF6 while its purity is very important. In this study, the adsorption process of hydrogen fluoride, as an impurity in the process of fluorine production, on sodium fluoride pellets is experimenta...

UV–Vis absorption spectroscopy and quantum chemistry are employed to study the spectral features of a new organoboron dye ortho-hydroxy dibenzoylmethanatoboron difluoride (OHDBMBF2). The compound shows promise for the detection of hydrated ammonia thanks to the ability to interact with proton a...

Ammonium hydrogen difluoride (NH4HF2) was used as a fluorinating agent for the fluorination of hydroxyapatite. The process was carried out at room temperature by pH cycle method, at 80 °C by reflux method and at 900 °C by solid state reaction. The products obtained in all the three methods wer...

Cross-linked polymer particles containing centers of molecular recognition of toluene and prepared in the presence of luminophoric bromine-containing or hydroxyl-containing derivatives of 1,3-diphenyl-β-diketonate boron difluoride using styrene, methacrylic acid, ethylene glycol dimethacrylate ...