کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4910664 1427730 2017 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of tin (II) sulfide: Determination of the reaction kinetics through calorimetric techniques
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Synthesis of tin (II) sulfide: Determination of the reaction kinetics through calorimetric techniques
چکیده انگلیسی


- SnS is widely quoted in the literature of patents as a friction material.
- The reaction between Sn and S is extremely rapid and highly exothermic.
- Sulfur adsorption on Tin may lead to the formation of Sulfur Dioxide.
- Constitutive model parameters can be estimated carrying out cheap calorimetric tests.
- Several reserves in changing the stoichiometric ratio of the starting materials

In the last ten years, the search for new application materials has become one of the “must” in the field of powder technology. Particularly, as regards solid lubricants, concerns in the use of compounds containing Lead and Antimony have been raised, since the former is classified as a carcinogen and the second such as a suspect one. Therefore, as consequence of both more and more stringent law requirements for environmental emissions and low impact on human health, safe and cheap materials are strongly demanded. As the sake of example, Tin (II) Sulfide, SnS, has been widely tested and found to be not only technically superior with respect to other alternatives but also safer from the environmental point of view. Despite these properties, its development has been limited by the relatively high synthesis costs compared to its competitors.The aim of this work is to determine the kinetics of a safe “dry” batch process for the production of SnS using only cheap calorimetric techniques. The results obtained from this study (synthesized in a series of equations describing the dynamics of the process) have shown that a simple but complete calorimetric analysis is able to overcome the main criticality that characterizes a dry synthesis involving Sulfur and Tin: that is, the difficulty in the reactor temperature control (danger of thermal runaway) due to the extremely fast and high exothermicity of the reaction and the low thermal capacity of the reacting mixture.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Powder Technology - Volume 311, 15 April 2017, Pages 416-425
نویسندگان
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