US EPA

1225979 

Journal Article 

Kinetic Modeling of Methanol-to-Olefin Reaction over ZSM-5 in Fluid Bed 

Kaarsholm, M; Rafii, B; Joensen, F; Cenni, R; Chaouki, J; Patience, GS 

2009 

Yes 

Industrial and Engineering Chemistry Research
ISSN: 0888-5885
EISSN: 1520-5045 

American Chemical Society, Box 3337 Columbus OH 43210 USA 

49 

1 (Nov 23 

29-38 

The methanol to olefins reaction has been studied in a small scale fluidized bed reactor over a phosphorus modified ZSM-5 catalyst. The product distribution was relatively insensitive to either feed rate or inlet gas composition. It was more sensitive to temperature with a significant increase in light olefins when the temperature was increased from 400 to 550 C. A model based on the hydrocarbon pool mechanism is proposed in which olefins form through reversible reactions with a high molecular weight hydrocarbon species in catalyst pores and intersections. Agreement between the model and the product distribution of the olefinic species is good throughout the temperature interval investigated. Further experimental work is required to adequately characterize the paraffin and C6+ fractions. 

Hydrocarbons; Model Studies; Temperature; Fluidized Beds; Kinetics; Catalysts; Pores; Inlets; Pools; 2009)