Until now, the major problem of methane conversion is to break the very strong C-H bond. It is possible by employing some catalytic methods. However, the formation of carbon powder diminishes the catalytic performance. The use of a gliding arc, described in this work, has two objectives: the hydrogen production and other syngas such as acetylene, and the treatment of the green house gas methane. A good approximation model describing the chemical processes concerning the methane decomposition is described, first by the interaction of key radicals such as CH3 and H, followed by chemical reactions involving other hydrocarbons. Furthermore, the experimental results demonstrated the ability of the gliding arc to accelerate chemical reactions at low temperatures while decreasing energetic cost.
Atomic Layer Epitaxy growth of optoelectronic semiconductors ZnTe, CdTe and CdxZn1-x Te and CdSe films is achieved by using a novel isothermal closed space sublimation system. The quality of the films and the Atomic Layer Epitaxy regime was confirmed by X-Rays and electron diffraction, Transmission Electron Microscope observations and composition measurement of the ternary CdxZn1-x Te alloys. The difference in vapor pressures between the elemental source and the growing surface is the driven force for the growth; this difference being zeroed once the surface is completely. ZnTe growth is regulated at 1 ML/cycle while CdTe is regulated at 0.5 ML/cycle.
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