Laser pyrolysis of carbon-nitrogen gas-phase compounds: An attempted approach to carbon nitride formation
✍ Scribed by R. Alexandrescu; S. Cojocaru; A. Crunteanu; S. Petcu; R. Cireasa; I. Voicu; I. Morjan; D. Fatu; F. Huisken
- Book ID
- 104107384
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 565 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0008-6223
No coin nor oath required. For personal study only.
✦ Synopsis
We describe the possibility to synthesize carbon nitride fine powder by laser pyrolysis of acetylene/nitrous oxide/ammonia mixtures. The powders were produced in a flow reactor by varying the relative concentrations of the sensitizers (SF&H.,).
The kinetics of the reaction was monitored by IR spectrophotometry of the exhaust gases. The powder crystallinity and bond structure was studied by X-ray diffraction (XRD) and IR transmission spectrometry, respectively. The majority of XRD data suggests the presence of the predicted aand g-C,N, structures, with a concentration depending on starting conditions. The presence of C-N bonded phases seems relevant. Under the present conditions, the slight contamination of powders by SF, decomposition products could not be avoided.