Kinetics of sorption of 1,3 di-isopropyl benzene and 1,3,5 tri-isopropyl benzene in Nay Crystals, Alumina Matrix and FCC catalyst particles by zero length column method

The kinetics of sorption of 1,3 di-isopropyl benzene and 1,3,5 tri-isopropyl benzene in NaY crystals, alumina matrix particles, and FCC catalyst particles was examined. Both molecules had highly nonlinear equilibrium adsorption properties in all three adsorbents and the observed K values were approximately 105. On NaY crystals, the diffusivities were micropore controlled, with 1,3,5 tri-isopropyl benzene having a percolation threshold, indicating possible cracking. The alumina particles with varying size distribution were macropore controlled. The FCC catalysts diffusivities reported were micropore controlled in the long time region. However, the short time region was probably macropore controlled. This is an abstract of a paper presented at the AIChE Annual Meeting and Fall Showcase (Cincinnati, OH 10/30/2005-11/4/2005).