Low-temperature thermal decomposition of large single crystals of ammonium perchlorate

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• 作者：Dorota Majda ; Alex ; er Korobov ; Urszula Filek ; Bogdan Sulikowski ; Paul Midgley ; David Vowles ; Jacek Klinowski
• 关键词：PCOS ; Steroids ; Insulin resistance ; Molecular ; Ovary
• 刊名：Chemical Physics Letters
• 出版年：2008
• 期刊代码：7_00092614
• 类别：ph
• 出版时间：20 March 2008
• 卷：454
• 期：4-6
• 页码：233-236
• 文件大小：833 K

摘要

Similarities and differences in the thermal behaviour of deuterated and nondeuterated ammonium perchlorate provide insights into the mechanism of its thermal decomposition. Thermal decomposition of NH₄ClO₄ and ND₄ClO₄ always begins in the bulk of the crystals. In both cases decomposition stops when the degree of conversion is about 30%, giving porous products which undergo the same phase transition as the parent single crystals. Thermal decomposition of the deuterated sample is slower, the volume fraction of pores appears to be lower and the sample has a small quantity of ‘snow’ on the surface. These effects are best rationalized as caused by proton transfer at the intersections of dislocations in the bulk of the crystals.