Effect of Ammonia on Preparation of Ammonium Polyphosphate
Ammonium polyphosphate (APP) was prepared by process of diammonium hydrogen phosphate at different ammonia atmosphere. XRD techniques were used to characterize the crystalline form of this product. Results showed that ammonium had significant effect on the crystalline form of prepared ammonium polyphosphate. The results were informative for controllable preparation ammonium polyphosphate in industrial production.
G. S. Liu and X. Z. Duan, "Effect of Ammonia on Preparation of Ammonium Polyphosphate", Advanced Materials Research, Vols. 228-229, pp. 828-831, 2011