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- Title
Interaction of sodalite and cancrinite with NH<sub>4</sub>NO<sub>3</sub> solution. First case of low-temperature synthesis of buddingtonite.
- Authors
Stanimirova, Tsveta; Kirov, Georgi
- Abstract
Hydroxyl sodalite and sulfate cancrinite were synthesized from fly ash from TPP Varna, Bulgaria. The interaction of the two feldspathoids with NH4NO3 solution at 90 °C was investigated. Because of the reaction, sodalite is dissolved and ammonium feldspar (buddingtonite) is formed, which is the first case of low-temperature synthesis of this mineral. The interaction of cancrinite with NH4NO3 induces ion exchange and the formation of cancrinite with composition (NH4)5.4Na3.6(NO3)1.45(SO4)0.25(OH)0.05[Al6Si6O24]·2H2O, suggesting potential for the use of this form as a slow-acting fertilizer.
- Subjects
SODALITE; FLY ash; ION exchange (Chemistry); FELDSPAR
- Publication
Review of the Bulgarian Geological Society, 2023, Vol 84, Issue 3, p55
- ISSN
0007-3938
- Publication type
Article
- DOI
10.52215/rev.bgs.2023.84.3.55