Documents disponibles écrits par cet auteur

Ammonium polyphosphate with crystalline form V by ammonium dihydrogen phosphate process / Gousheng Liu in Industrial & engineering chemistry research, Vol. 49 N° 12 (Juin 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 12 (Juin 2010) . - pp. 5523–5529 Titre : Ammonium polyphosphate with crystalline form V by ammonium dihydrogen phosphate process Type de document : texte imprimé Auteurs : Gousheng Liu, Auteur ; Xinchun Liu, Auteur ; Jianguo Yu, Auteur Année de publication : 2010 Article en page(s) : pp. 5523–5529 Note générale : Chemistry engineering Langues : Anglais (eng) Mots-clés : Ammonium  polyphosphate  Crystalline  form  V  Condensation  water-solubility Résumé : Ammonium polyphosphate (APP) with crystalline form V (APP-V) was prepared through the reaction of ammonium dihydrogen phosphate and urea at high temperature and under dry ammonia atmosphere. Effects such as raw material ratios, ammoniation, condensation temperature, and condensation time were examined. Its water-solubility was tested and compared with those of industrial APP-I and APP-II. FTIR, XRD, and TGA techniques were used to characterize this product. The thermal degradation of APP-V was examined and compared with that of APP-I and APP-II; the molecular structure of this APP-V was speculated and discussed. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100453a [article] Ammonium polyphosphate with crystalline form V by ammonium dihydrogen phosphate process [texte imprimé] / Gousheng Liu, Auteur ; Xinchun Liu, Auteur ; Jianguo Yu, Auteur . - 2010 . - pp. 5523–5529. Chemistry engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 12 (Juin 2010) . - pp. 5523–5529 Mots-clés : Ammonium  polyphosphate  Crystalline  form  V  Condensation  water-solubility Résumé : Ammonium polyphosphate (APP) with crystalline form V (APP-V) was prepared through the reaction of ammonium dihydrogen phosphate and urea at high temperature and under dry ammonia atmosphere. Effects such as raw material ratios, ammoniation, condensation temperature, and condensation time were examined. Its water-solubility was tested and compared with those of industrial APP-I and APP-II. FTIR, XRD, and TGA techniques were used to characterize this product. The thermal degradation of APP-V was examined and compared with that of APP-I and APP-II; the molecular structure of this APP-V was speculated and discussed. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100453a

A novel process to prepare ammonium polyphosphate with crystalline form II and its comparison with melamine polyphosphate / Gousheng Liu in Industrial & engineering chemistry research, Vol. 49 N° 23 (Décembre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 23 (Décembre 2010) . - pp. 12148–12155 Titre : A novel process to prepare ammonium polyphosphate with crystalline form II and its comparison with melamine polyphosphate Type de document : texte imprimé Auteurs : Gousheng Liu, Auteur ; Wenyan Chen, Auteur ; Jianguo Yu, Auteur Année de publication : 2011 Article en page(s) : pp. 12148–12155 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : 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 [article] A novel process to prepare ammonium polyphosphate with crystalline form II and its comparison with melamine polyphosphate [texte imprimé] / Gousheng Liu, Auteur ; Wenyan Chen, Auteur ; Jianguo Yu, Auteur . - 2011 . - pp. 12148–12155. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 23 (Décembre 2010) . - pp. 12148–12155 Mots-clés : 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