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International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.28 SNIP: 0.421 CiteScore™: 0.9

ISSN Print: 2150-766X
ISSN Online: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.2011002679
pages 549-560

X-RAY CRYSTALLOGRAPHY AND THERMOLYSIS OF AMMONIUM PERCHLORATE AND PROTONATED HEXAMETHYLENETETRAMINE PERCHLORATE PREPARED BY NEWER METHODS. PART 69

Dinesh Kumar
Department of Chemistry, Deen Dayal Upadhyay (DDU) Gorakhpur University, Gorakhpur 273009, India
I. P. S. Kapoor
Department of Chemistry, Deen Dayal Upadhyay (DDU) Gorakhpur University, Gorakhpur 273009, India
Gurdip Singh
Department of Chemistry, Deen Dayal Upadhyay (DDU) Gorakhpur University, Gorakhpur 273009, India
Roland Frohlich
Institut fur Organische Chemie, Universitat Munster, D-48149 Munster, Germany

ABSTRACT

When hexamethylenetetramine (HMTA) was treated with cupric perchlorate at room temperature, protonation at one of the N atoms, it yielded protonated HMTA perchlorate (PHMTAP), C6H13ClN4O4 . It crystallizes in a monoclinic crystal system with the P21/n space group. On the other hand, when HMTA was treated with 20% perchloric acid in the absence of cupric perchlorate, the resulting product was ammonium perchlorate (AP), which crystallizes in an orthorhombic crystal system with the Pnma space group. Both PHMTAP and AP have been characterized by X-ray crystallography using a Nonius Kappa charge coupled device diffractometer. Thermolysis has been carried out by thermogravimetric, differential thermal analysis, ignition/explosion delay, and burning-rate measurements. The results have shown that PHMTAP salt was thermally less stable than AP.


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