Thermal decomposition of lignocellulosic biomass in the presence of acid catalysts.
Transformation of lignocellulosic biomass to biofuels involves multiple processes, in which thermal decomposition, hydrotreatment are the most central steps. Current work focuses on the impact of several solid acids and Keggin-type heteropolyacids on the decomposition temperature (Td) of pine wood and the characterization of the resulted products. It has been observed that a mechanical mixture of solid acids with pine wood has no influence on Td, while the use of heteropolyacids lower the Td by 100°C. Moreover, the treatment of biomass with a catalytic amount of H3PW12O40 leads to formation of three fractions: solid, liquid and gas, which have been investigated by elemental analysis, TGA, FTIR, GC-MS and NMR. The use of heteropolyacid leads, at 300°C, to a selective transformation of more than 50 wt.% of the holocellulose part of the lignocellulosic biomass. Moreover, 60 wt.% of the catalyst H3PW12O40 are recovered.
Université de Lyon, ICL, C2P2, UMR 5265 CNRS-ESCPE Lyon-UCBL, 43 bd du 11 Novembre 1918, 69616 Villeurbanne Cedex, France; Synthopetrol, 37 Rue des Mathurins, 75008 Paris 8, France.
Cherif
C
Larabi
Walid
W
al Maksoud
Kai C
KC
Szeto
Anne
A
Roubaud
Pierre
P
Castelli
Catherine C
CC
Santini
Jean J
JJ
Walter
D000143:Acids / Q000494:pharmacology*; D018533:Biomass; D002245:Carbon Dioxide / Q000032:analysis; D002248:Carbon Monoxide / Q000032:analysis; D002384:Catalysis / Q000187:drug effects; D005662:Furaldehyde / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry; D006358:Hot Temperature; D006868:Hydrolysis / Q000187:drug effects; D008031:Lignin / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D028223:Pinus / Q000737:chemistry / Q000187:drug effects; D013818:Thermogravimetry; D014934:Wood / Q000737:chemistry / Q000187:drug effects
D000143:Acids; C036909:lignocellulose; D002245:Carbon Dioxide; D002248:Carbon Monoxide; D008031:Lignin; D005662:Furaldehyde
Acidic support; Heteropolyacid; Pine wood; Thermal pretreatment; Thermolysis