介绍了电子自平衡微量热天平及其在催化剂研究中的应用。着重分析探讨了热天平中反应器的几种形式与结构。利用实验室研制的三套管下皿式反应器,适用于不同气氛下的反应体系(一般有腐蚀性的气体),可进行原位观察催化剂重量的变化与相应尾气组成的变化。当把Ni系催化剂用于烃类—蒸汽转化反应时,可有效地直接获得催化剂上的积炭、消炭过程及其活性的关系,进而可回归得到相虚的动力学方程。 The electron self-balance microcalorimeter and its application in catalyst research are introduced. Focus on the analysis of thermobalance in the reactor several forms and structures. The three-tube-under-plate reactor developed by the laboratory is suitable for the reaction system under different atmospheres (generally corrosive gas), and can observe in situ changes in the catalyst weight and the corresponding tail gas composition. When Ni catalyst is used in the hydrocarbon-steam reforming reaction, the relationship between carbon deposition on the catalyst and carbon elimination process and its activity can be effectively obtained directly, and the kinetic equation of phase imaginary can be regressed.