Somerization of 1-hexene to 2-hexene occurred in a laboratory reactor over rhodium particles supported on alumina at 150°c and atmospheric pressure. the reaction was a first- order in 1-hexene with a rate constant of 0.15 s'. find the largest pellet size that can be used in an industrial reactor to achieve 75% of the maximum rate. additional data: pore radius of the alumina : 10 nm molecular diffusivity : 0.050 cm's! tortuosity : 4 porosity : 0.5