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International Journal of Energetic Materials and Chemical Propulsion

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ISSN Печать: 2150-766X

ISSN Онлайн: 2150-7678

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 0.7 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 0.7 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.1 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00016 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.18 SJR: 0.313 SNIP: 0.6 CiteScore™:: 1.6 H-Index: 16

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PYROLYSIS STUDIES OF THE BURNING MECHANISMS OF HIGH-NITROGEN COMPOUNDS

Том 5, Выпуск 1-6, 2002, pp. 22-30
DOI: 10.1615/IntJEnergeticMaterialsChemProp.v5.i1-6.40
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Краткое описание

The chemical origin of the burning rate differences of 5-ammo-1H-tetrazole (5-ATZ) and its hydrohalide (HCl, HBr, HI) salts were revealed by flash pyrolysis at 350°C, 400°C and 450°C by T-jump/FTIR spectroscopy. Comparison of the products indicated that two global decomposition channels exist. The first channel is dissociation of the salt to form HX and 5-ATZ followed by decomposition of neutral 5-ATZ. The second channel involves decomposition of the [5-ATZH]+ ion directly. The ratio of these two channels depends on the compound. The 5-ATZ channel is favored over the [5-ATZH]+ channel in the order HCl > HBr > HI, which is the trend of the pK, values of these acids. This information enables both the ordering of the burning rates as a function of pressure as well as the trend in the pressure dependence to be rationalized. Similar studies on the azo and hydraza-bridged amino- and nitrofurazans reveal that the hydraza linkage converts to the azo linkage early in the decomposition sequence and before the remainder of the compound decomposes. This leads to the prediction that the azo and hydraza-bridged compounds may have similar burning rates.

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