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3.426  Articles
1 of 344 pages  |  10  records  |  more records»
Monoclinic tungsten oxide (WO3) nanoplates were synthesized via a two-step simple process: acid precipitation at room temperature to prepare WO3.H2O nanoplates and annealing at high temperature (400 and 500 oC) in ambient air to obtain WO3 nanoplates. The... see more

Tungsten heavy alloys are considered as two phase composites with 88 to 97 wt% tungsten interspersed in a matrix of relatively low melting elements such as nickel, iron and cobalt. The mechanical properties of these alloys are greatly influenced by the mi... see more

Titanium silicalite (TS-1) is known as an active material catalyst in the epoxidation reaction. In this study, tungsten oxides (WO3) with various loading amount have been supported on the TS-1 to increase of the catalytic activity of the TS-1 material. Th... see more

The purpose of this study was to investigate influences of temperature on the conversion of ammonium tungstate pentahydrate (ATP) powder to tungsten trioxide (WO3) particles with controllable sizes, crystallinities, and physicochemical properties. In this... see more

Phenol is an organic material in batik waste that must be processed before disposal because it is carcinogenic and can reduce dissolved oxygen levels. The method used to treat phenol is Advanced Oxidation Process (AOPs). The AOPs method is a waste treatme... see more

The reaction of ethanol oxidation on copper-tungsten oxide catalysts has been studied. It has been shown that the main products of ethanol oxidation reaction on tungsten-copper oxide catalysts are acetaldehyde, ethylene, and carbon dioxide. It has been fo... see more

X-ray diffraction phase analysis of samples performed on a DRON-6 diffractometer has shown that the processes of CaWO4 transition to WC and W2C had the highest probability in the temperature range of 1,173–1,473 K. The end-product CaWO4, thermally treated... see more

This work is a continuation of the article "Surface reactions with participation of oxides of molybdenum and tungsten", published in the previous issue of the journal. The influence of the electric field and the pressure of oxygen in the gas phase on the ... see more

Aluminium doped Zinc Oxide (AZO) seed layers were deposited on Fluorine doped Tin Oxide (FTO) substrates using a spin coating technique. These were then immersed in growth solutions of zinc nitrate, hexamethylenetetramine and distilled water to develop na... see more

1 of 344 pages  |  10  records  |  more records»