Paper details

Title:

Modification of Alumina-Supported Ni-Catalyst by MgO and CeO2 for Tar Elimination in Steam Gasification of EFB

Author(s):

Kuchonthara, P., Krerkkaiwan, S., Butnark, S., Vitidsant, T.

Document(s):

Abstract:

This work attempted to imitate a base oxide of dolomite, MgO, on the surface of alumina supported Ni­catalyst. In addition, CeO2 was considered to suppress the coking on Ni­catalyst. Experiments were carried out in a drop­tube fixed bed reactor. Empty fruit brunch (EFB), waste from palm oil manufacturing, was employed as biomass feedstock. Catalysts were prepared by a wet impregnation method. The effect of each oxide was investigated on the performance of catalyst in terms of activity and catalyst lifetime. Furthermore, influence of calcination temperature during catalyst preparation was examined. The results with different catalysts were compared and discussed. Characterization of prepared catalysts was also performed using XRD technique in order to provide additional information for discussion. The results indicated that modification of NiO/Al2O3 with MgO and CeO2 obviously enhanced tar elimination and increased gas production. Calcination temperature during catalyst preparation was found to significantly affect on catalyst activity. The lower calcined temperature was likely desirable for the CeO2­modified catalyst rather than the MgO­modified catalyst in terms of hydrogen production. In addition, the characterization results revealed that the modified catalysts exhibited higher Ni dispersion and lower sintering than unmodified catalyst.

Keywords:

catalytic conversion, gasification, tar removal

Topic:

Biomass Conversion Technologies for Heating, Electricity and Chemicals                  

Subtopic:

Gasification for synthesis gas production

Event:

19th European Biomass Conference and Exhibition

Session:

VP2.4.13

Pages:

1574 - 1576

ISBN-13:

978-88-89407-55-4

ISBN-10:

88-89407-55-7

Paper DOI:

10.5071/19thEUBCE2011-VP2.4.13

Price:

FREE