论文部分内容阅读
催化剂的热脱附法已被广泛用来研究催化剂的表面非均匀性和活性中心分布,它还可以从能量的角度研究催化剂与吸附质之间的吸附形态和吸附键的强弱。热脱附法可在等温下进行,亦可用程序升温的方法进行。采用阶跃升温,使催化剂在等温下进行热脱附,得到的数据容易分析和处理,结果比较准确,但由于实现阶跃升温比较困难,目前国内外大都使用程序升温法进行热脱附。
The thermal desorption of catalyst has been widely used to study the surface heterogeneity and active center of the catalyst. It can also study the adsorption morphology and the bond strength between the catalyst and the adsorbate from the energy point of view. Thermal desorption method can be carried out in isothermal, can also be used to program temperature methods. Adopting stepwise temperature increasing, the catalyst is desorbed at isothermal temperature. The obtained data are easy to analyze and process. The result is more accurate. However, it is difficult to raise the temperature step by step. At present, thermal desorption is mostly used at home and abroad.