scispace - formally typeset
Search or ask a question
Journal ArticleDOI

Thermal behaviour of urea nitrate

16 Jun 1982-Thermochimica Acta (Elsevier)-Vol. 55, Iss: 3, pp 359-362
About: This article is published in Thermochimica Acta.The article was published on 1982-06-16. It has received 5 citations till now. The article focuses on the topics: Urea nitrate.
Citations
More filters
Journal ArticleDOI
TL;DR: In this article, the decomposition of urea nitrate and guanidine nitrate was determined with isothermal heating followed by quantification of both remaining nitrate, and remaining base.
Abstract: The decompositions of urea nitrate (UN) and guanidine nitrate (GN) are determined with isothermal heating followed by quantification of both remaining nitrate and remaining base. Activation energies determined for UN were 158 and 131 kJ/mol with the preexponential factors being 1.39 × 1012 s−1 and 2.66 × 109 s−1 for nitrate and urea, respectively. These pairs of Arrhenius constants predict decomposition rates less than a factor of two apart. For GN the activation energies were 199 and 191 kJ/mol with the preexponential factors being 1.94 × 1015 s−1 and 3.20 × 1014 s−1 for nitrate and guanidine, respectively. These pairs of Arrhenius constants predict identical decomposition rates. Literature values for ammonium nitrate decomposition indicate that it should decompose somewhat slower than UN and faster than GN. DSC also indicates this ordering but suggested that UN is substantially less stable than was observed in the isothermal experiments. Decomposition products, both gaseous and condensed, are reported f...

45 citations


Cites background from "Thermal behaviour of urea nitrate"

  • ...UN [9,18,22,23] and GN [20,21] also produce primarily gases, but condensed-phase residue has also been reported (Table 6)....

    [...]

Journal ArticleDOI
TL;DR: In this paper, the decomposition of urea nitrate (UN) was studied using adiabatic and non-isothermal calorimetry techniques, and gas species released were identified and quantified in situ using TG-infrared spectroscopy/mass spectrometry and molar proportions of these gases were evaluated.

29 citations

Journal ArticleDOI
TL;DR: Aging and degradation of urea nitrate below the melting point, at 100°C, was studied by using thermal analysis and spectroscopic methods including IR, Raman, 1 H and 13 C NMR techniques as discussed by the authors.

12 citations

Journal ArticleDOI
TL;DR: In this paper, a mild and efficient method for the cleavage of oximes to carbonyl compounds using readily available urea nitrate in acetonitrile-water (95:5), under microwave irradiation within 2 min, in good yields is reported.
Abstract: A new mild and efficient method for the cleavage of oximes to carbonyl compounds using readily available urea nitrate in acetonitrile-water (95:5), under microwave irradiation within 2 min, in good yields is reported

5 citations

References
More filters
Journal ArticleDOI
TL;DR: In this paper, the preparation, characterization and thermal behaviour of morpholinium perchlorate are reported, followed by XRD, IR, TG, DTA and mass spectral techniques.

10 citations

Journal ArticleDOI
TL;DR: In this paper, the preparation, characterization and thermal behavior of ethylenediammonium perchlorate has been described, followed by XRD, IR, TG, DTA and MS techniques.

9 citations