Chemical transport
The phenomenon of chemical transport (chemical transport reaction) is based on a chemical equilibrium reaction in which at least two gaseous components, the so-called transport medium and the gas phase complex , as well as a solid or liquid component (the substance to be transported) are involved. If the balance is not "extreme", that is, if the direction of the moderate temperature variation chemical reaction can change, can be divided into special vessels that two different temperature zones contain (transport vessels), fabrics far below its boiling point or sublimation point on the Transport the gas phase from one zone to the other.
Chemical transport was first introduced in the 1950s by Harald Schäfer ( University of Münster ) as a method for crystal synthesis and crystal growth and treated theoretically in this context.
Applications
- Metal cleaning and material coating: Van Arkel de Boer process , Mond process
- Halogen lamps
- CVD process
literature
- Harald Schäfer: Chemical transport reactions . Verlag Chemie 1962.
- Michael Binnewies : Chemistry in incandescent lamps . In: Chemistry in Our Time . tape 20 , no. 5 , 1986, pp. 141-145 , doi : 10.1002 / ciuz.19860200502 .
- Michael Binnewies, Robert Glaum, Marcus Schmidt, Peer Schmidt: Chemical transport reactions . De Gruyter, 2011, ISBN 978-3-11-024896-8 .