...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems >THERMOCHEMICAL STUDY OF FERROCENE [French]
【24h】

THERMOCHEMICAL STUDY OF FERROCENE [French]

机译：二茂铁的热化学研究[法文]

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The thermochemical study of a purified ferrocene sample was carried out by combustion calorimetry and by differential thermal analysis. The combustion energy was determined by: - the classical method using an isoperibolic calorimeter with and without a rotating bomb from the amount of carbon dioxyde recovered after the reaction; - combustion calorimetry using about 10 mg of ferrocene and the CRMT rocking calorimeter. Comparison experiments were carried out to determine the value of the corrections to standard state. This value was also calculated directly using the energy contributions of the different constituents of the reacting system and a computer program conceived in the laboratory. Both of them are in good agreement. The values of the standard molar combustion energy resulting from this study are: -(5925 +/- 5) kJ mol(-1) (obtained by classical combustion calorimetry with a static bomb); -(5948 +/- 5) and -(5947 +/- 5) kJ mol(-1) (obtained by combustion calorimetry of small amounts of a substance and the CRMT rocking calorimeter; the first one using the comparaison experiments and the second one the computer program for calculating the value of the corrections to standard state). The second value was used to determine the following thermodynamic quantities: Delta(c)H(m) degrees(cr, 298.15 K) = -(5955 +/- 5) kJ mol(-1) Delta(f)H(m) degrees(cr, 298.15 K) = (179 +/- 5) kJ mol(-1) Delta(f)H(m) degrees(g, 298.15 K) = (253 +/- 5)kJ mol(-1) H(Fe -(c-C5H5)) = 325 kJ mol(-1) To our knowledge this study is the first one using the combustion calorimetry technique of a small amount of substance and the rocking CRMT calorimeter in the case of an organometallic compound. As mentioned in this paper, with regard to the classical combustion calorimetry which often presents great difficulties to be applied to the study of organometallic substances, this technique offers many advantages in this case. [References: 45]
机译：通过燃烧量热法和差热分析对纯化的二茂铁样品进行热化学研究。通过以下方法测定燃烧能：-使用等代谢量热计（带或不带旋转炸弹）的经典方法，由反应后回收的二氧化碳量确定; -使用约10mg的二茂铁和CRMT摇摆量热仪进行燃烧量热。进行比较实验以确定校正到标准状态的值。该值还直接使用反应系统不同组成部分的能量贡献和实验室中设想的计算机程序来计算。他们两个都非常同意。这项研究得出的标准摩尔燃烧能量值为：-（5925 +/- 5）kJ mol（-1）（通过经典燃烧量热法用静态炸弹获得）; -（5948 +/- 5）和-（5947 +/- 5）kJ mol（-1）（通过少量物质的燃烧量热法和CRMT摇摆量热仪获得;第一个使用比较实验，第二个一个计算机程序，用于计算校正到标准状态的值）。第二个值用于确定以下热力学量：Delta（c）H（m）度（cr，298.15 K）=-（5955 +/- 5）kJ mol（-1）Delta（f）H（m）度（cr，298.15 K）=（179 +/- 5）kJ mol（-1）Delta（f）H（m）度（g，298.15 K）=（253 +/- 5）kJ mol（-1） H（Fe-（c-C5H5））= 325 kJ mol（-1）据我们所知，本研究是使用少量物质的燃烧量热技术和摇摆式CRMT量热仪（对于有机金属化合物）的第一个研究。正如本文所提到的，关于经典燃烧量热法（通常在应用有机金属物质研究时常常会遇到很大的困难），这种技术在这种情况下具有许多优势。 [参考：45]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号