Effects of coking on the transport properties of H-mordenite*1

摘要: Abstract An experimental study of the relationships between coke content, catalyst activity, and intraparticle diffusivity is reported for cumene cracking on a commercial H-mordenite. Coking conditions were varied from 230 to 350 °C at space velocities 0.20 0.65 wt/hr/wt time stream up 6 hr. Effective diffusivities catalysts found decrease by over factor 2 during coking process are nonlinearly related level, independent temperature coking. Under strong diffusion limitation, this change in alters catalytic effectiveness proportion square root ratio, ( D eff 0 ) 1 .