Liquefaction of Lignocellulosic Biomass with Dioxane/Polar Solvent Mixtures in the Presence of an Acid Catalyst

Sung Phil Mun; El Barbary M. Hassan

Journal of Industrial and Engineering Chemistry, Vol.10, No.3, 473-477, May, 2004

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Liquefaction of Lignocellulosic Biomass with Dioxane/Polar Solvent Mixtures in the Presence of an Acid Catalyst

Sung Phil Mun^†, and El Barbary M. Hassan¹

Division of Forest, College of Agriculture and Life Sciences, Chonbuk National University, Chonju 561-756, Korea
¹Cellulose and Pape Department, National Research Center, Tahrir Street, Dokki Cairo, Egypt

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Pine (Pinus densiflora) and poplar (Populus alba × glandulosa) woods are liquefied by dioxane/ polar solvent mixtures in the presence of mineral or organic sulfonic acid catalysts. Mixing 6.7- 40% of water with dioxane remarkably improved the liquefaction; this observation may be due to the hydrolysis effect and enhanced solubility of the liquefied material in the solvent. A similar improvement in the liquefaction also was observed when using other highly polar solvents, such as methanol, ethanol, and ethylene glycol (EG). Organic sulfonic acids, e.g., p-toluenesulfonic acid (PTSA), methanesulfonic acid (MSA), and naphthalenesulfonic acid (NSA), were slightly more effective as catalysts for the liquefaction than were mineral acids. More than 95% liquefaction was achieved within 30 min at 160 ~ 170 ℃, even when liquifying softwood.

Keywords:pine wood;poplar wood;liquefaction;dioxane;organic sulfionic acid

[References]

Alma MH, Yoshioka M, Yao Y, Shiraishi N, Wood Sci. Technol., 30, 39 (1996)
Alma MH, Yoshioka M, Yao Y, Shiraishi N, Wood Sci. Technol., 32, 297 (1998)
Kurimoto Y, Shirakawa K, Yoshioka M, Shiraishi N, FRI Bull.(176), 163 (1992)
Kurimoto Y, Doi S, Tamura Y, Holzforschung, 53, 617 (1999)
Kurimoto Y, Takeda M, Koizumi A, Yamauchi S, Doi S, Tamura Y, Bioresour. Technol., 74(2), 151 (2000)
Yamada T, Ono H, Bioresour. Technol., 70(1), 61 (1999)
Mun SP, Hassan EBM, Yoon TH, J. Ind. Eng. Chem., 7(6), 430 (2001)
Mun SP, Hassan EM, J. Korean Wood Sci. Technol., (Mokchae Konghak), 30, 66 (2002)
Mun SP, Hassan EM, Biomass Bioenerg., submitted (2003)
Hassan EM, Mun SP, J. Ind. Eng. Chem., 8(4), 359 (2002)
Yao Y, Yoshioka M, Shiraishi N, Mokuzai Gakkaishi, 40, 176 (1994)
Sarkanen KV, Ludwig CH, Lignins, Occurrence, Formation, Structure, and Reactions, Wiley-Interscience, p. 168, U.S.A. (1971)
Mun SP, Lu JL, Rhee JM, J. Korean Forestry Energy, 21, 1 (2002)
Mun SP, Lu JL, Rhee JM, J. Korean Forestry Energy, 21, 18 (2002)

[Referenced By]

[1] Alma MH, Yoshioka M, Yao Y, Shiraishi N, Wood Sci. Technol., 30, 39 (1996)

[2] Alma MH, Yoshioka M, Yao Y, Shiraishi N, Wood Sci. Technol., 32, 297 (1998)

[3] Kurimoto Y, Shirakawa K, Yoshioka M, Shiraishi N, FRI Bull.(176), 163 (1992)

[4] Kurimoto Y, Doi S, Tamura Y, Holzforschung, 53, 617 (1999)

[5] Kurimoto Y, Takeda M, Koizumi A, Yamauchi S, Doi S, Tamura Y, Bioresour. Technol., 74(2), 151 (2000)

[6] Yamada T, Ono H, Bioresour. Technol., 70(1), 61 (1999)

[7] Mun SP, Hassan EBM, Yoon TH, J. Ind. Eng. Chem., 7(6), 430 (2001)

[8] Mun SP, Hassan EM, J. Korean Wood Sci. Technol., (Mokchae Konghak), 30, 66 (2002)

[9] Mun SP, Hassan EM, Biomass Bioenerg., submitted (2003)

[10] Hassan EM, Mun SP, J. Ind. Eng. Chem., 8(4), 359 (2002)

[11] Yao Y, Yoshioka M, Shiraishi N, Mokuzai Gakkaishi, 40, 176 (1994)

[12] Sarkanen KV, Ludwig CH, Lignins, Occurrence, Formation, Structure, and Reactions, Wiley-Interscience, p. 168, U.S.A. (1971)

[13] Mun SP, Lu JL, Rhee JM, J. Korean Forestry Energy, 21, 1 (2002)

[14] Mun SP, Lu JL, Rhee JM, J. Korean Forestry Energy, 21, 18 (2002)