In situ catalytic pyrolysis of lignocellulose using alkali-modified amorphous silica alumina.
Canadian pinewood was pyrolyzed at 450 °C in an Infrared oven and the pyrolysis vapors were converted by passing through a catalyst bed at 450 °C. The catalysts studied were amorphous silica alumina (ASA) containing alkali metal or alkaline earth metal species including Na, K, Cs, Mg and Ca. The catalysts effectiveness to reduce the bio-oil oxygen content, to enhance the bio-oil energy density and to change the liquid and gas product distribution were evaluated using different techniques including gravimetric analysis, elemental analysis, Karl-Fischer titration, GC/MS and micro-GC analysis. According to the results K/ASA found to be the most effective catalysts for conversion of hollocellulose (hemicellulose and cellulose)-derived vapors of pinewood while Cs/ASA catalyst was the most effective catalyst for conversion of lignin-derived vapors and production of hydrocarbons.
Catalytic Processes and Materials, Faculty of Science and Technology, MESA+, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands. m.zabeti@utwente.nl
M
M
Zabeti
T S
TS
Nguyen
L
L
Lefferts
H J
HJ
Heeres
K
K
Seshan
D000468:Alkalies / Q000737:chemistry*; D000537:Aluminum Oxide / Q000737:chemistry*; D000538:Aluminum Silicates / Q000737:chemistry*; D056804:Biofuels / Q000032:analysis; D018533:Biomass; D001709:Biotechnology / Q000379:methods*; D002170:Canada; D002264:Carboxylic Acids / Q000737:chemistry; D002384:Catalysis; D002586:Cesium / Q000737:chemistry; D008031:Lignin / Q000737:chemistry*; D008970:Molecular Weight; D010100:Oxygen / Q000737:chemistry; D028223:Pinus / Q000737:chemistry; D015203:Reproducibility of Results; D013696:Temperature; D013816:Thermodynamics; D014835:Volatilization
D000468:Alkalies; D000538:Aluminum Silicates; D056804:Biofuels; D002264:Carboxylic Acids; C036909:lignocellulose; D002586:Cesium; C049037:aluminosilicate; D008031:Lignin; D000537:Aluminum Oxide; D010100:Oxygen