In order to solve the shortcomings of MoO

3

/γ-Al

2

O

3

catalyst for sulfur-resistant methanation

a segmented plasma fluidized bed reactor was designed

where plasma discharge zone and the fluidization zone were separated under higher discharge power. At the bed height of 30 mm

the gas velocity of 0.10 m·s

-1

can provide a better fluidization state. The suitable discharge results can be achieved when the input power is 27 W and the discharge interval is 2.0 mm. With the extension of catalyst plasma treatment time

the conversion of CO decreases

but the selectivity of CH

4

increases. Combined with N

2

physical adsorption-desorption

XRD

TEM

Raman

TGA and TPR characterization

it was found that the active components of the catalyst are uniformly dispersed on the γ-Al

2

O

3

support. After plasma treatment

tetrahedral Mo species was used as the active center

and the interaction between Mo and the carrier was strengthened. It provides a novel approach for preparing catalyst with dielectric barrier discharge (DBD) fluidized bed reactor.