Catalytic hydrothermal pretreatment of corncob into xylose and furfural via solid acid catalyst.

Selectively catalytic hydrothermal pretreatment of corncob into xylose and furfural has been developed in this work using solid acid catalyst (SO4(2-)/TiO2-ZrO2/La(3+)). The effects of corncob-to-water ratio, reaction temperature and residence time on the performance of catalytic hydrothermal pretreatment were investigated. Results showed that the solid residues contained mainly lignin and cellulose, which was indicative of the efficient removal of hemicelluloses from corncob by hydrothermal method. The prepared catalyst with high thermal stability and strong acid sites originated from the acid functional groups was confirmed to contribute to the hydrolysis of polysaccharides into monosaccharides followed by dehydration into furfural. Highest furfural yield (6.18 g/100g) could be obtained at 180°C for 120 min with 6.80 g/100g xylose yield when the corncob/water ratio of was 10:100. Therefore, selectively catalytic hydrothermal pretreatment of lignocellulosic biomass into important platform chemicals by solid acids is considered to be a potential treatment for biodiesel and chemical production.

[1]  J. Parajó,et al.  Bioethanol production from hydrothermally pretreated Eucalyptus globulus wood. , 2010, Bioresource technology.

[2]  Zhen Huang,et al.  Effect of torrefaction on structure and fast pyrolysis behavior of corncobs. , 2013, Bioresource technology.

[3]  M. Ojeda,et al.  Cyclopentyl methyl ether: a green co-solvent for the selective dehydration of lignocellulosic pentoses to furfural. , 2012, Bioresource technology.

[4]  G. Tompsett,et al.  Design of solid acid catalysts for aqueous-phase dehydration of carbohydrates: The role of Lewis and Bronsted acid sites , 2011 .

[5]  M. Delwiche,et al.  Methods for Pretreatment of Lignocellulosic Biomass for Efficient Hydrolysis and Biofuel Production , 2009 .

[6]  Ling-Ping Xiao,et al.  Hydrothermal carbonization of lignocellulosic biomass. , 2012, Bioresource technology.

[7]  Juan Carlos Serrano-Ruiz,et al.  Efficient microwave-assisted production of furfural from C5 sugars in aqueous media catalysed by Brönsted acidic ionic liquids , 2012 .

[8]  J. Labidi,et al.  Furfural production from corn cobs autohydrolysis liquors by microwave technology , 2013 .

[9]  M. Himmel,et al.  Deposition of Lignin Droplets Produced During Dilute Acid Pretreatment of Maize Stems Retards Enzymatic Hydrolysis of Cellulose , 2007, Biotechnology progress.

[10]  D. Vlachos,et al.  Conversion of Xylose to Furfural Using Lewis and Brønsted Acid Catalysts in Aqueous Media , 2012 .

[11]  R. Sun,et al.  Hydrothermal treatment and enzymatic hydrolysis of Tamarix ramosissima: evaluation of the process as a conversion method in a biorefinery concept. , 2013, Bioresource technology.

[12]  Shijie Liu,et al.  Efficient Production of Furan Derivatives from a Sugar Mixture by Catalytic Process , 2012 .

[13]  Michael E Himmel,et al.  Cellulose crystallinity index: measurement techniques and their impact on interpreting cellulase performance , 2010, Biotechnology for biofuels.

[14]  Jie Zhang,et al.  Fatty acid methyl ester synthesis catalyzed by solid superacid catalyst /ZrO2-TiO2/La3+ , 2010 .

[15]  Wm. Curtis Conner,et al.  Kinetics of furfural production by dehydration of xylose in a biphasic reactor with microwave heating , 2010 .

[16]  A. Frenkel,et al.  Insights into the interplay of Lewis and Brønsted acid catalysts in glucose and fructose conversion to 5-(hydroxymethyl)furfural and levulinic acid in aqueous media. , 2013, Journal of the American Chemical Society.

[17]  Ung-Jin Kim,et al.  X-ray diffraction study on the thermal expansion behavior of cellulose Iβ and its high-temperature phase , 2010 .

[18]  Bryan Bals,et al.  Evaluation of ammonia fibre expansion (AFEX) pretreatment for enzymatic hydrolysis of switchgrass harvested in different seasons and locations , 2010, Biotechnology for biofuels.

[19]  Martyn Pillinger,et al.  Modified versions of sulfated zirconia as catalysts for the conversion of xylose to furfural , 2007 .

[20]  Ke-fu Chen,et al.  Characterization of the pretreatment liquor of biomass from the perennial grass, Eulaliopsis binata, for the production of dissolving pulp. , 2013, Bioresource technology.

[21]  S. Kent Hoekman,et al.  Hydrothermal Carbonization (HTC) of Lignocellulosic Biomass , 2011 .

[22]  Amie D. Sluiter,et al.  Determination of Structural Carbohydrates and Lignin in Biomass , 2004 .

[23]  P. Fardim,et al.  Topochemical pretreatment of wood biomass to enhance enzymatic hydrolysis of polysaccharides to sugars. , 2013, Bioresource technology.

[24]  Martyn Pillinger,et al.  Exfoliated titanate, niobate and titanoniobate nanosheets as solid acid catalysts for the liquid-phase dehydration of d-xylose into furfural , 2006 .

[25]  James A. Dumesic,et al.  Production of 5-hydroxymethylfurfural and furfural by dehydration of biomass-derived mono- and poly-saccharides , 2007 .

[26]  Xiaomin Li,et al.  Effect of hydrothermal pretreatment on properties of bio-oil produced from fast pyrolysis of eucalyptus wood in a fluidized bed reactor. , 2013, Bioresource technology.

[27]  Héctor A. Ruiz,et al.  Hydrothermal processing, as an alternative for upgrading agriculture residues and marine biomass according to the biorefinery concept: A review , 2013 .

[28]  Seung-Jin Oh,et al.  Co-production of furfural and acetic acid from corncob using ZnCl2 through fast pyrolysis in a fluidized bed reactor. , 2013, Bioresource technology.

[29]  Hongbing Yu,et al.  Solid acids as catalysts for the conversion of D-xylose, xylan and lignocellulosics into furfural in ionic liquid. , 2013, Bioresource technology.

[30]  Wei Weiqi,et al.  Combination of liquid hot water pretreatment and wet disk milling to improve the efficiency of the enzymatic hydrolysis of eucalyptus. , 2013, Bioresource technology.

[31]  Ayhan Demirbas,et al.  Relationships between lignin contents and heating values of biomass , 2001 .

[32]  J. Parajó,et al.  Hydrothermal processing of rice husks: effects of severity on product distribution , 2008 .

[33]  R. Sahu,et al.  A one-pot method for the selective conversion of hemicellulose from crop waste into C5 sugars and furfural by using solid acid catalysts. , 2012, ChemSusChem.