Intrinsic kinetics of the thermal decomposition of sodium bicarbonate

Yee Lin Wu, Shin Min Shih

研究成果: Article同行評審

19 引文 斯高帕斯(Scopus)

摘要

The intrinsic kinetics of the thermal decomposition of NaHCO3 to Na2CO3 has been studied by non-isothermal thermogravimetric analysis. NaHCO3 powder of 47 μm mean particle size was heated to decomposition at three constant heating rates (1.25, 2.5, and 5° C min-1) in flowing nitrogen. The range in which the decomposition occurred was about 360-450 K. A graphical method and Friedman's method were both used to analyze the experimental data: close agreement was obtained. The reaction rate showed a first-order dependence on the amount of unreacted NaHCO3 and the values for the activation energy and pre-exponential factor were 25.3 kcal mol-1 (105.8 kJmol-1) and 6.7 × 1012 min-1, re- spectively.

原文English
頁(從 - 到)177-186
頁數10
期刊Thermochimica Acta
223
發行號C
DOIs
出版狀態Published - 1993 8月 28

All Science Journal Classification (ASJC) codes

  • 儀器
  • 凝聚態物理學
  • 物理與理論化學

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