Steam reforming of biomass gasification tar using benzene as a model compound over various Ni supported metal oxide catalysts.
The steam reforming of benzene as a model compound of biomass gasification tar was carried out over various Ni/metal oxide catalysts. The effects of the support, temperature, Ni-precursor, Ni loading and reaction time were examined, and their catalytic performance was compared with that of a commercial Ni catalyst. Among the Ni/metal oxide catalysts used, 15 wt% Ni/CeO(2)(75%)-ZrO(2)(25%) showed the highest catalytic performance owing to its greater redox characteristics and increased surface area, irrespective of the reaction temperature. The catalytic activity of 15 wt% Ni/CeO(2)(75%)-ZrO(2)(25%) was higher than that of the commercial Ni catalyst. Moreover, the catalyst activity was retained due to its excellent resistance to coke deposition even after 5h. The Ni-precursor played a critical role in the catalytic activity. With the exception of nickel nitrate, all the Ni-precursors (chloride and sulfate) caused deactivation of the catalyst.
Faculty of Environmental Engineering, University of Seoul, Seoul, Republic of Korea.
Hyun Ju
HJ
Park
Sung Hoon
SH
Park
Jung Min
JM
Sohn
Junhong
J
Park
Jong-Ki
JK
Jeon
Seung-Soo
SS
Kim
Young-Kwon
YK
Park
D001554:Benzene / Q000737:chemistry*; D018533:Biomass; D002245:Carbon Dioxide / Q000032:analysis; D002248:Carbon Monoxide / Q000032:analysis; D002384:Catalysis; D002563:Cerium / Q000737:chemistry; D002849:Chromatography, Gas / Q000379:methods; D005740:Gases / Q000032:analysis; D006358:Hot Temperature; D006859:Hydrogen / Q000032:analysis; D007700:Kinetics; D008670:Metals / Q000737:chemistry*; D008697:Methane / Q000032:analysis; D008956:Models, Chemical; D009532:Nickel / Q000737:chemistry*; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry*; D013227:Steam; D013499:Surface Properties; D013638:Tars / Q000737:chemistry*; D015040:Zirconium / Q000737:chemistry
D005740:Gases; D008670:Metals; D010087:Oxides; D013227:Steam; D013638:Tars; D002245:Carbon Dioxide; D002563:Cerium; C030583:ceric oxide; D009532:Nickel; D002248:Carbon Monoxide; D006859:Hydrogen; D015040:Zirconium; D001554:Benzene; D008697:Methane; C028541:zirconium oxide