2013
DOI: 10.1016/j.fuel.2011.04.003
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Production of ketones from pyroligneous acid of woody biomass pyrolysis over an iron-oxide catalyst

Abstract: Catalytic upgrading of pyroligneous acid, by-product from slow pyrolysis of woody biomass for char production, was carried out using zirconia-supported iron-oxide catalysts under a steam atmosphere at temperatures ranging from 623 to 723 K, and the effect of ZrO 2 content in the ZrO 2 -FeO X catalysts on catalytic activity and ketone yields was investigated. It was demonstrated that hydroxyacetone and carboxylic acids (acetic and propionic acids) in the pyroligneous acid were converted into aliphatic ketones (… Show more

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Cited by 74 publications
(52 citation statements)
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“…Moreover, metal oxides have been utilized in the decomposition of glycerol [20,21], cacao pod husks [22], 10 lignin [23], pyroligneous acid [24], and ethanol fermentation stillage [25] to give useful materials. Compared with AR, the concentration of heavy components such as VR (vacuum residue) and asphaltenes is much higher in bitumen, which means that carbonaceous residues and coke are easily formed during its decomposition.…”
Section: Introductionmentioning
confidence: 99%
“…Moreover, metal oxides have been utilized in the decomposition of glycerol [20,21], cacao pod husks [22], 10 lignin [23], pyroligneous acid [24], and ethanol fermentation stillage [25] to give useful materials. Compared with AR, the concentration of heavy components such as VR (vacuum residue) and asphaltenes is much higher in bitumen, which means that carbonaceous residues and coke are easily formed during its decomposition.…”
Section: Introductionmentioning
confidence: 99%
“…Organic bonds such as C-C, H-O, C-H, and C-O bonds in lignocellulosic biomass are decomposed by various reactions including dehydration, hydrolysis, oxidation, decarboxylation, and depolymerization to produce pyrolysis vapors, tar, gaseous products, and water vapor (Mansur et al 2013).…”
Section: Introductionmentioning
confidence: 99%
“…In our previous research concerning conversion of pyroligneous acid solution using ZrO2 _ FeOx, the decrease in catalytic activity was observed due to the deposition of alkalline metals on the catalyst 19) . In contrast, almost complete glycerol conversions were obtained for ZrO2 _ FeOx and all alkali metal-supported ZrO2 _ FeOx catalysts.…”
Section: )mentioning
confidence: 95%
“…Acetol (hydroxyacetone), formed by dehydration of glycerol, was mainly converted to carboxylic acids and ketones. Carboxylic acids are selectively converted into ketones over ZrO2-FeOx 19) , in which two molecules of carboxylic acids react to produce one molecule of ketone and CO2. Therefore, carboxylic acids and ketones were considered to be consecutively produced from acetol over the catalyst.…”
Section: Effect Of the W/f Value On Product Yields Andmentioning
confidence: 99%
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