| Summary: | A series of Sm-CeO<sub>2</sub>/Beta composites with various Beta contents were prepared by an incipient impregnation method, followed by calcination at 650 °C. They were characterized by XRD, N<sub>2</sub> adsorption, SEM, NH<sub>3</sub>-TPD, CO<sub>2</sub>-TPD and <sup>27</sup>Al MAS NMR. The Sm-CeO<sub>2</sub>/Beta bifunctional catalysts exhibit eminent catalytic performances in the selective conversion of ethanol to propylene. In particular, the Sm-CeO<sub>2</sub>/10%Beta catalyst with 10% Beta zeolite gives the highest C<sub>3</sub>H<sub>6</sub> yield of 59.3%. A good match between Sm-CeO<sub>2</sub> and Beta accounts for its optimal result.
|
|---|