| Titre : | A novel process to prepare ammonium polyphosphate with crystalline form II and its comparison with melamine polyphosphate (2011) |
| Auteurs : | Gousheng Liu, Auteur ; Wenyan Chen, Auteur ; Jianguo Yu, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 49 N° 23, Décembre 2010) |
| Article en page(s) : | pp. 12148–12155 |
| Note générale : | Chimie industrielle |
| Langues : | Anglais |
| Tags : | Ammonium polyphosphate Crystalline |
| Résumé : | P4O10 is highly deliquescent and reactive; techniques using non-P4O10 process are not only required for environmental protection, but also for consideration of safety and cost in industrial-scale production. A non-P4O10 process to prepare ammonium polyphosphate with crystalline form II (APP-II) was proposed by heating the mixture of diammonium hydrogen phosphate (DAP) and melamine under wet ammonia. Its water solubility, FT-IR, XRD, and 31P NMR spectra were compared with those of commercial APP-II and melamine polyphosphate (MPoly), and interesting results were obtained. Thermogravometric analysis (TGA) showed the synthesized APP-II had better thermal stability than commercial APP-II. The reaction mechanism and molecular structure for the subject compound were investigated and discussed in detail. |
| DEWEY : | 660 |
| ISSN : | 0888-5885 |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie1014102 |
