Abstract:

Advanced Physical Chemistry Lab is a mandatory course for undergraduate students majored in chemistry at our university, in which the preparation and characterization of catalysts is an indispensable part. This study improves upon the original "The Analysis of the Acid Property of Materials by NH₃-TPD Method" and "Measurement of Catalytic Activity and Selectivity of the Catalyst" experiments. The original experiments involve the effect of reaction temperatures and reaction times on the catalytic activity and selectivity of a single catalyst, as well as the principles of NH₃-TPD methods and the measurement of the acidic properties of materials. Conversely, the improved experiment focuses on the connection between the acidic properties and pore structure of the catalytic performance by comparing the catalytic performance of three different catalysts under the same reaction conditions. In addition, the improved experiment takes advantages of the results of the N₂ physical adsorption experiment, so that students can comprehensively understand the preparation, modification, and characterization technology of catalysts and have a clearer understanding of the factors affecting the catalytic performance of catalysts. The purpose is to enable students to integrate the theoretical knowledge in related courses and have a deeper understanding of the principle of zeolite β, which plays a catalytic role in the transformation of large reactants.

Key words: Zeolite β, Acid property, Porous structure, Isomerization of α-pinene