Supercapacitor technology is an extremely timely area of research with fierce international competition to develop cost-effective, environmentally friendlier EC electrode materials that have real world application. Herein, nitrogen-doped carbons with large specific surface area, optimized micropore structure and surface chemistry have been prepared by means of an environmentally sound hydrother...

A highly dense Ni59Zr20Ti16Si2Sn3 partial amorphous metallic coating, about 500mm thick, was fabricated by means of HVAF (High Velocity Air Fuel) thermal spraying. Amorphous alloy powders produced by using gas atomization were used for HVAF thermal spraying to produce an amorphous metallic coating. Microstructural investigation showed that crystallization and oxidation occurred during thermal s...

ABSTRACT. The effect of acetic acid and ethanol as polar aqueous solvents on sulfuric with hydrogen peroxide an oxidant was studied. A small amount these significantly improved the copper leaching recovery. parameters such temperature, stirring speed, H2O2 concentration, solid/liquid ratio, H2SO4 concentration particle size were examined. About 76.33% highest Cu extraction gained 2 M H2O2, 600 ...

Alkaloids are aromatic hydrocarbons with nitrogen as heteroelements in the ring structure that responsible for bonding metal surface and help to reduce corrosion of metals such mild steel (MS) an acidic medium. In this study, alkaloid Rhynchostylis retusa (RR) was extracted by solvent extraction method confirmed chemical test well FTIR spectroscopic test. Extracted alkaloids were tested green i...

We show that the binary homogeneous nucleation (BHN) of H2SO4-H2O can be treated as quasi-unary nucleation of H2SO4 in equilibrium with H2O vapor. A scheme to calculate the evaporation coefficient of H2SO4 molecules from H2SO4-H2O clusters is presented and a kinetic model to simulate the quasi-unary nucleation of H2SO4-H2O is developed. In the kinetic model, the growth and evaporation of sulfur...

Atmospheric nucleation rates have been shown to be dependent on sulphuric acid (H2SO4) concentration (Weber et al. 1996, Sihto et al., 2006; Riipinen et al., 2007; Kuang et al., 2009). However, laboratory experiments on H2SO4-nucleation have failed to reproduce ambient observations (e.g. Wyslouzil et al., 1991; Viisanen et al, 1997; Ball et al, 1999; Young et al 2008). Very recently Sipilä et a...

Sulfuric acid aerosols occur in the ambient particulate mode due to atmospheric conversion from sulfur dioxide (SO2). This paper describes the response of the rabbit tracheobronchial tree to daily exposures to sulfuric acid (H2SO4) aerosol, relating physiological and morphological parameters. Rabbits were exposed to filtered air (sham control) or to submicrometer-sized H2SO4 at 250 micrograms/m...

Graphene-supported (40-x) wt% Pd x wt% Co (0≤x≤13.33) alloys/composites have been prepared by a microwave-assisted polyol reduction method and been investigated for their structural and electrocatalytic properties for the oxygen reduction reaction (ORR) in 0.5 M H2SO4 at 298 K. The study demonstrated that the bimetallic Pd-Co composite nanoparticles are, in fact, alloy nanoparticles with fcc cr...

Nano silica-H2SO4 is an efficient and mild catalysis system for the regeneration of aldehyde from aldoximes. Ketoximes are converted to amides by Beckmann rearrangement in the presence of nano silica-H2SO4. The reactions are carried out in solvent-free conditions under microwave irradiation (600 W) within 50-120 sec in good yields.