CO2-laser as an energy source for high temperature syntheses at different pressures with preparation examples from the chemistry of oxo compounds
Abstract
A survey is conducted of the currently used methods for the generation of high temperatures in the chemical laboratory. It is found that a high performance carbon-dioxide laser is the best heat source for the considered preparation procedure. The new synthesis technique is used for the preparation of compounds at normal pressure in air. The preparation of single crystals of SrCr2O4 and the high-temperature modification of CaCr2O4 is described. Only microcrystalline powder is obtained in attempts to prepare BeFe2O4 and BeAlFeO4. An employment of the new technique under conditions involving the use of a protective gas under normal pressure is also discussed, taking into account difficulties concerning a preparation of SrFe2O4 in the form of single crystals and the preparation of SrFe7Al5O19. Attention is also given to the preparation of single crystals of SrNiO2 in an autoclave with a window which is transparent for laser rays.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1976
- Bibcode:
- 1976PhDT........46P
- Keywords:
-
- Carbon Dioxide Lasers;
- Chemical Reactions;
- High Temperature Research;
- Metal Oxides;
- Radiation Chemistry;
- Thermochemistry;
- Alkaline Earth Oxides;
- Atmospheric Pressure;
- Autoclaves;
- Crystallography;
- High Pressure;
- Microcrystals;
- Oxygen;
- Point Sources;
- Single Crystals;
- Solids;
- Lasers and Masers