Comparison of attrition test methods: ASTM standard fluidized bed vs jet cup

Attrition resistance is one of the key design parameters for catalysts used in fluidized-bed and slurry phase types of reactors. The ASTM fluidized-be d test has been one of the most commonly used attrition resistance evaluati on methods; however, it requires the use of 50 g samples-a large amount for catalyst development studies. Recently a test using the jet cup requiring only 50 g samples has been proposed, in the present study, two series of sp ray-dried iron catalysts were evaluated using both the ASTM fluidized-bed t est and a test based on the jet cup to determine this comparability. It is shown that the two tests give comparable results. This paper, by reporting a comparison of the jet-cup test with the ASTM standard, provides a basis f or utilizing the more efficient jet cup with confidence in catalyst attriti on studies.