Published June 2019
| Version v1
Journal article
Synthesis and phase structure of (Cs0.8-xBa0.4+x)(Al1.6+x3+Ti6.4-x4+)O16 ceramics using sol-spray pyrolysis route for immobilizing radioactive cesium
Creators
- 1. Southwest University of Science and Technology, Mianyang (China). School of National Defense Science and Technology
- 2. Tsinghua University, Beijing (China). Institute of Nuclear and New Energy Technology
Description
In this paper, a sol-spray pyrolysis route was employed to fabricate (Cs, Ba)-hollandite ceramic waste forms. The high-phase purity (Cs0.-8-xBa0.4+x)(Al1.6+xTi6.4-x)O16 (0 ≤ x ≤ 0.4) ceramics were synthesized at 1050 °C using the produced powders by sol-spray pyrolysis. The results show that all samples show tetragonal hollandite with rod morphology. Additionally, the sintered (Cs, Ba)-hollandite ceramics exhibit a good chemical durability. The normalized release rates of Cs and Ba were < 10-2 g m-2 d-1 after 14 days. These results indicate that hollandite ceramics are promising candidate for immobilizing radioactive cesium. (author)
Additional details
Publishing Information
- Journal Title
- Journal of Radioanalytical and Nuclear Chemistry
- Journal Volume
- 320
- Journal Issue
- 3
- Journal Page Range
- p. 733-739
- ISSN
- 0236-5731
- CODEN
- JRNCDM
INIS
- Country of Publication
- Hungary
- Country of Input or Organization
- Hungary
- INIS RN
- 50055080
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- BARIUM; CERAMICS; CESIUM; HOLLANDITE; PYROLYSIS; RADIOACTIVE WASTE PROCESSING; SYNTHESIS; WEAR RESISTANCE
- Descriptors DEC
- ALKALI METALS; ALKALINE EARTH METALS; CHEMICAL REACTIONS; DECOMPOSITION; ELEMENTS; MANAGEMENT; MECHANICAL PROPERTIES; METALS; MINERALS; OXIDE MINERALS; PROCESSING; RADIOACTIVE WASTE MANAGEMENT; THERMOCHEMICAL PROCESSES; WASTE MANAGEMENT; WASTE PROCESSING
Optional Information
- Notes
- 42 refs.