Renewable Energy Biomass Fuels

Review of Novel Catalysts for Biomass Tar Cracking and Methane Reforming

Authors: Gerber, Mark A.
 
Abstract: A review of the literature was conducted to examine the performance of catalysts other than conventional nickel catalysts, and alkaline earth and olivine based catalysts for treating hot raw product gas from a biomass gasifier to convert methane and tars into synthesis gas. Metal catalysts other than Ni included precious metals Rh, Ru, Ir, Pt, and Pd, as well as Cu, Co, and Fe in limited testing. Nickel catalysts promoted with Rh, Zr, Mn, Mo, Ti, Ag, or Sn were also examined, as were Ni catalysts on Ce2O3, TiO2, ZrO2, SiO2, and La2O3. In general, Rh stood out as a consistently superior metal catalyst for methane reforming, tar cracking, and minimizing carbon buildup on the catalyst. Ru and Ir also showed significant improvement over Ni for methane reforming. Ceria stood out as good support material and particularly good promoter material when added in small quantities to another support material such as alumina, zirconia, or olivine. Other promising supports were lanthana, zirconia, and titania.
Publication Date: 10 Oct 2007
Report numbers: PNNL-16950
DOE Contract number: AC05-76RL01830
Resource Type: Technical Report
Research Organizations: Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
Sponsoring Organizations: USDOE
Country of Publication: United States
Language: English
Keywords relating to this report:
BIOMASS
BUILDUP
CARBON
CATALYSTS
METHANE
NICKEL
OLIVINE
PERFORMANCE
PROMOTERS
SYNTHESIS GAS
TAR
TESTING

Subjects:
Related subjects:
CATALYST, METHANE REFORMING, SYNTHESIS GAS