Kinetics of the entire methanol to olefins process over SAPO-34 catalyst

Abstract

The kinetics of the entire process of the SAPO-34 catalyst for the transformation of methanol into olefins in the 400-450 °C range has been established by using the experimental data obtained in an isothermal fixed bed reactor. The model considers the activity change of SAPO-34 zeolite with time on stream. The activity of the catalyst consists of two parts: the stabilisation activity (while methanol is fully transformed) and the deactivation activity (while methanol is not all transformed). According to the activity of the catalyst, this study measured the evolution of each olefin with time on stream respectively.