In practical applications, the adsorption capacity of activated alumina often varies significantly under different operating conditions. So, precisely which factors influence the adsorption capacity of activated alumina? I. Specific Surface Area and Pore Structure Activated alumina possesses an abundance of micropores and mesopores; its adsorption capacity stems primarily from its vast internal surface area. Generally […]

I. Observing Color Changes Observing color changes is one of the most intuitive methods for determining whether potassium permanganate-impregnated activated alumina requires replacement. Fresh potassium permanganate-impregnated activated alumina typically appears purplish-red or deep purple; this coloration is due to the potassium permanganate loaded onto its surface. During the process of adsorbing and oxidizing harmful gases, the potassium […]

In modern hydrogen peroxide production, a variety of other adsorbents—such as silica gel, molecular sieves, and activated carbon—are also available on the market for use in similar processes. This paper presents a comparative analysis of activated alumina versus these adsorbents, examining them across three key dimensions: performance, application, and cost, with the aim of assisting […]