Add time:08/15/2019         Source:sciencedirect.com

Although ammonium perchlorate, widely used as a rocket propellant, has been extensively investigated for many years, the mechanism of its thermal decomposition at low temperatures remains controversial. Examination of the thermal behaviour of large crystals of partly and completely deuterated ammonium perchlorate by DSC, SEM, TG and QMS reveals that the rates of thermal decomposition depend on the degree of deuteration and decrease in the sequence N[H/D]4ClO4 >  NH4ClO4 >  ND4ClO4.

► Deuteration alters the thermal behaviour of ammonium perchlorate. ► Rates of thermal decomposition decrease in the sequence N[H/D]4ClO4 > NH4ClO4 > ND4ClO. ► Results support the hypothesis of proton transfer at the intersection of dislocations.

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