应用化学 ›› 1990, Vol. 0 ›› Issue (1): 88-90.

• 研究简报 • 上一篇    下一篇

三甲醇丙烷-季戊四醇固体溶液的热容和相变焓

张志英, 杨孟林   

  1. 西北大学热化学研究所 西安 710069
  • 收稿日期:1989-05-12 修回日期:1989-07-12 出版日期:1990-02-10 发布日期:1990-02-10
  • 基金资助:
    国家自然科学基金

HEAT CAPACITY AND PHASE TRANSITION ENTHALPY OF TRIMETHYLOLPROPANE-PENTAERYTHRITOL SOLID SOLUTION

Zhang Zhiying, Yang Menglin   

  1. Thermochemistry Institute, Northwestern University, Xi'an 710069
  • Received:1989-05-12 Revised:1989-07-12 Published:1990-02-10 Online:1990-02-10

摘要: 前曾报道季戊四醇在461.60K有一个固-固相变,其相交含为41.37kJmol-1[1]。但是,作为低温储能材料,该物质的相变温度偏高。从有关固-固相变储能材料的热力学研究中,我们发现三甲醇丙烷-季戊四醇固体溶液具有较低的固-固相变温度。本文测定了三甲醇丙烷-季戊四醇(摩尔比60:40)固体溶液的相变热参数和热容。

关键词: 三甲醇丙烷, 季戊四醇, 热容, 相变焓

Abstract: The heat capacity of the solid solution of trimethylolpropane and pentaerythritol(60:40 mol%)was measured by means of an automated adiabatic calorimeter. A solid-solidtransition and a melting transition of the solid solution were found at 330.51 K and433.0 K with the transition enthalpies of 9.72 and 5.76 kJmol-1, respectively.

Key words: trimethylolpropane, pentaerythritol, heat capacity, phase transition enthalpy