Several methods are employed to conduct attrition testing, each offering unique insights into the mechanical durability of catalyst particles. Common techniques include:
1. Jet-Cup Testing: In this method, catalyst particles are subjected to high-velocity gas jets, simulating the conditions in fluidized bed reactors. The extent of particle breakage and the generation of fines are measured. 2. Rotary Drum Testing: Catalyst particles are placed in a rotating drum, where they are subjected to continuous tumbling. The generation of fines is measured periodically to assess the attrition resistance. 3. Fluidized Bed Testing: This technique involves fluidizing the catalyst particles in a gas stream. The particles are subjected to collision and abrasion, and the fines generated are quantified.
