Abstract: Alumina is the most commonly used catalyst support. As a crucial component of catalysts, its properties directly influence the reaction performance of the catalyst.The common extrusion process for preparing technical alumina supports involves multiple steps including raw material pretreatment, shaping, and heat treatment. The process parameters at each step significantly affect the properties of the final support. This review summarizes the influence of the phase structure of the precursor pseudo-boehmite on support properties, and systematically analyzes the regulatory mechanisms of various process conditions on support strength and pore structure during extrusion. On this basis, the key role of mathematical models in analyzing particle mixing behavior, optimizing drying and calcination processes, and establishing process-structure-performance relationships is discussed. By constructing mathematical model to establish a visual correlation between operational parameters and support,table production can be ensured while further improving support quality, providing a reference for achieving the transformation of the support production process from "empirical regulation" to "data-driven" development.

Key words: alumina support, pseudo boehmite, mathematical model, heat treatment, extrusion molding