Radiation effects on thermal decomposition of ammonium perchlorate

Dedgaonkar, V. G.; Sarwade, D. B.

doi:10.1007/bf02166144

Cited by 7 publications

(3 citation statements)

References 5 publications

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“…20 Differential thermal analysis (DTA) and TGA methods were used predominantly; more recently, Dedgaonkar and Sarwade utilized the FTIR technique. 21 Ivanov et al exploited broadband ultraviolet (UV) light to produce dislocations and radiolysis products such as chlorate ions (ClO 3 − ) that may alter the mechanism(s) of the lowtemperature decomposition of ammonium perchlorate (NH 4 ClO 4 ). 22,23 Contrary to the thermal degradation experiments, much less attention has been paid to the radiolytic decomposition of ammonium perchlorate (NH 4 ClO 4 ) that could also explain why it affects its thermal degradation; these works mainly exploited γand X-ray irradiation as summarized in Table 1.…”

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confidence: 99%

“…Attempts were also made to shed light on the effect of irradiation on the thermal decomposition of ammonium perchlorate with energetic particles; these experiments applied primarily X-ray, γ-rays, , and neutrons . Differential thermal analysis (DTA) and TGA methods were used predominantly; more recently, Dedgaonkar and Sarwade utilized the FTIR technique . Ivanov et al exploited broadband ultraviolet (UV) light to produce dislocations and radiolysis products such as chlorate ions (ClO 3 – ) that may alter the mechanism(s) of the low-temperature decomposition of ammonium perchlorate (NH 4 ClO 4 ). , …”

Section: Introductionmentioning

confidence: 99%

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Electron Radiolysis of Ammonium Perchlorate: A Reflectron Time-of-Flight Mass Spectrometric Study

et al. 2017

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Thin films of ammonium perchlorate (NHClO) were exposed to energetic electrons at 5.5 K to explore the radiolytic decomposition mechanisms. The effects of radiolysis were monitored on line and in situ via Fourier transform infrared spectroscopy (FTIR) in the condensed phase along with electron impact ionization quadrupole mass spectrometry (EI-QMS) and single-photon photoionization reflectron time-of-flight mass spectrometry (PI-ReTOF-MS) during the temperature-programmed desorption (TPD) phase to probe the subliming molecules. Three classes of molecules were observed: (i) nitrogen bearing species [ammonia (NH), hydroxylamine (NHOH), molecular nitrogen (N), nitrogen dioxide (NO)], (ii) chlorine carrying molecules [chlorine monoxide (ClO), chlorine dioxide (ClO), dichlorine trioxide (ClO)], and (iii) molecular oxygen (O). Decay profiles of the reactants along with the growth profiles of the products as derived from the infrared data were fit kinetically to obtain a reaction mechanism with the initial steps involving a proton loss from the ammonium ion (NH) yielding ammonia (NH) and the decomposition of perchlorate ion (ClO) forming chlorate ion (ClO) plus atomic oxygen. The latter oxidized ammonia to hydroxylamine and ultimately to nitrogen dioxide. Molecular oxygen and nitrogen were found to be formed via recombination of atomic oxygen and multistep radiolysis of ammonia, respectively.

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confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electron Radiolysis of Ammonium Perchlorate: A Reflectron Time-of-Flight Mass Spectrometric Study

et al. 2017

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“…Strong bands in the region of 1600-1650 cm -1 for all the complexes may be assigned to C¼N of the Schiff-bases. Bands at 1091 and 623 cm -1 for 4 are assigned to the stretching and bending frequencies of ClO À 4 [28]. Electronic spectra of 1-4 exhibit an intense band at 310 nm and 390-395 nm, assigned to -*/n-* transitions [29].…”

Section: Synthesis and Characterizationmentioning

confidence: 99%

Synthesis, characterization, and fluorescence properties of dinuclear cadmium(II) complexes

Roy

2009

Journal of Coordination Chemistry

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Four dinuclear cadmium(II) complexes, [Cd 2 (L 1 )( 2 -Cl)Cl 2 ] (1), [Cd 2 (L 2 )( 2 -Cl)Cl 2 ] (2), [Cd 2 (L 3 )( 2 -Cl)Cl 2 ] (3), and [Cd 2 (L 4 ) 3 ClO 4 ] (4), where HL 1 ¼ 4-methyl-2,6-bis(1-(2-piperidinoethyl)iminomethyl)-phenol, HL 2 ¼ 4-methyl-2,6-bis(1-(2-pyrrolidinoethyl)iminomethyl)-phenol, HL 3 ¼ 4-methyl-2,6-bis(1-(2-morpholinoethyl)iminomethyl)-phenol and HL 4 ¼ 4-methyl-2,6-bis(cyclohexylmethyl)iminomethyl)-phenol, were synthesized. They were characterized by elemental analysis, FT-IR, UV-Vis, fluorescence and electronspray ionization mass spectroscopy. Complexes 1 and 4 were also characterized by single crystal X-ray analysis. The cadmiums atoms in 1 are linked by 2 -chloride in a distorted square pyramidal geometry, whereas cadmium atom in 4 is in a distorted octahedral environment. The complexes show emission bands around 500 nm with excitation at 395 nm.

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Studies on gamma radiolysis of microcrystalline ammonium perchlorate

Dedgaonkar

Sarwade

1995

Journal of Radioanalytical and Nuclear Chemistry Letters

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Radiation effects on thermal decomposition of ammonium perchlorate

Cited by 7 publications

References 5 publications

Electron Radiolysis of Ammonium Perchlorate: A Reflectron Time-of-Flight Mass Spectrometric Study

Electron Radiolysis of Ammonium Perchlorate: A Reflectron Time-of-Flight Mass Spectrometric Study

Synthesis, characterization, and fluorescence properties of dinuclear cadmium(II) complexes

Studies on gamma radiolysis of microcrystalline ammonium perchlorate

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