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Melt Crystallization of Ammonium Dinitramide (ADN) Investigated by Means of X-ray Diffraction

: Herrmann, Michael; Förter-Barth, Ulrich; Heintz, Thomas

Fulltext urn:nbn:de:0011-n-6351225 (548 KByte PDF)
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Created on: 26.5.2021

Chemie- Ingenieur- Technik (2021), Online First, 6 pp.
ISSN: 0009-286X
ISSN: 1522-2640
Journal Article, Electronic Publication
Fraunhofer ICT ()
ammonium dinitramide; emulsion crystallization; In-situ-investigation; operando XRD; additives; crystallization; rockets

Ammonium dinitramide (ADN) is a promising oxidizing agent for solid rocket propellants. In situ XRD investigations of ADN and ADN suspensions have been performed in order to understand and refine the emulsion crystallization process for manufacturing spherical ADN particles (prills). The investigation revealed that the melt crystallization behavior depends on ADN quality, humidity, maximum temperature of temperature cycles, and suspension agents. Further investigations will focus on additives for controlling the mechanisms investigated, e.g., by seeding.