PROCESS FOR PRODUCTION OF PROPYLENE

摘要

Disclosed is a process for producing propylene from a hydrocarbon raw material containing ethylene at a high concentration efficiently and steadily. Specifically disclosed is a process for producing propylene by catalytically converting a hydrocarbon raw material containing ethylene at a concentration of more than 50 mass% with a zeolite-containing catalyst that meets the following requirements (1) to (3): (1) the catalyst contains an intermediate-pore zeolite having a pore size of 5 to 6.5 Å; (2) the intermediate-pore zeolite has a SiO/AlOratio ranging from 20 to 300 by mole; and (3) the acid amount as measured based on the amount desorbed at a high temperature in a thermal desorption spectrum of ammonia (also referred to as the 'TPD acid amount') is 20 to 350 μmol/g-zeolite.