Download Adsorbed Layers on Surfaces. Part 5: Adsorption of molecules by K. Christmann (auth.), H.P. Bonzel (eds.) PDF

By K. Christmann (auth.), H.P. Bonzel (eds.)

Surface technology is known as a comparatively younger medical self-discipline, all for the actual and chemical homes of phenomena on fresh and coated strong surfaces, studied less than numerous stipulations. The adsorption of atoms and molecules on sturdy surfaces is, for instance, this kind of , hooked up with kind of drastic alterations of all floor homes. An adsorption occasion is usually saw in nature and located to be of technical value in lots of commercial methods. for that reason, floor technological know-how is interdisciplinary by way of its very nature, and as such an enormous middleman among basic and utilized research.

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Additional resources for Adsorbed Layers on Surfaces. Part 5: Adsorption of molecules on metal, semiconductor and oxide surfaces

Example text

This has been employed in the early days of surface science mainly for powders [55Tra], later for gas adsorption on thin metallic (polycrystalline) films vapor-deposited from a central cathode filament consisting of the film material in question onto the inner surface of glass bulbs [70Wed]. The calorimetrically determined heats of adsorption are integral quantities, unless one admits small gas pulses and follows the development of the released heats, a procedure which requires an utmost sensitivity.

Stateresolved; vibrational heating observed H2 permeation expts. 85Kub rotat. and vibrat. stateresolved; vibrational heating observed expts. 1 Adsorbate properties of hydrogen on solid surfaces [Ref. p. 4 Dissociative (atomic) hydrogen adsorption The values listed in the table below were obtained by various methods at different adsorption temperatures; usually, the crystallographic structure of the surfaces in question was determined by LEED, the chemical cleanliness was controlled by Auger electron spectroscopy, XPS, or other techniques.

1 Adsorbate properties of hydrogen on solid surfaces [Ref. p. 8 (H2) Exponent n of cosΘ distribution Experimental technique Remarks Ref. MB expts expts. performed at 100 K with H2 and D2 80Mat SHG expts. expts. 3 TDS; angular distribution + TOF mass spectrometry 5 angular distribution + TOF mass spectrometry of desorption 8 angular distribution + TOF mass spectrometry of desorption 10 supersonic MB expts. angular dep. 5 angular distribution of desorption; supersonic MB expts. seeded MB expts. 8 supersonic MB expts.

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