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Advanced in conversion of hemicellulosic biomass to furfural and upgrading to biofuels. Catal Sci Tech 2:2025-2036

Catalysis Science & Technology (Impact Factor: 5.43). 10/2012; DOI: 10.1039/c2cy20235b

ABSTRACT

Recent approaches to furfural synthesis from hemicellulosic biomass and pentose sugars with both homogeneous and solid acidic catalysts have been summarized by addressing the associated sustainability issues. The features of deconstruction of hemicellulosic biomass by acid hydrolysis to produce pentose sugar feedstock for furfural have been discussed in brief. Several strategies including solvent extraction in a biphasic process, application of surface functionalized materials such as acidic resins, mesoporous solids and mechanistic insight in limited cases are discussed. The present status of the promising furfural platform in producing second generation biofuels (furanics and hydrocarbon) is reviewed. The performances of each catalytic system are assessed in terms of intrinsic reactivity and selectivity toward furfural production. Overall, this minireview attempts to highlight the scope of further developments for a sustainable furfural process and upgrading to fuels.

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    • "However, it is apparent that use of acidic heterogeneous catalyst i.e. solid acid catalyst is advantageous over homogeneous acid catalysts. But, most of the solid acid catalyst (sulfonated mesoporous silica, sulfonated carbon, heteropoly acid, ion-exchanged resin, sulfonated metal oxide, zeolite etc.) used for furfural synthesis fails to remain stable under hydrothermal reaction conditions due to their less stability [3] [4]. Additionally, use of edible sugar is not practically good option since it may create food crisis and also, it has to be obtained from profusely available hemicellulose part of lignocellulosic biomass. "
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    • "Dias,A.S.,Pillinger,M.,&Valente,A.A.(2005).Dehydrationof xyloseintofurfuralovermicro-mesoporoussulfonicacidcatalysts.J. Catal.,229,414-423.http://dx.doi.org/10.1016/j.jcat.2004.11.016. [18]Dutta,S.,De,S.,Saha,B.,&Alam,M.I.(2012a).Advancesincon- versionofhemicellulosicbiomasstofurfuraland "
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    • "An experimental design of factorial 2 4À1 was carried out to optimize hydrolysis conditions (Table S2). The limits for hydrolysis conditions, especially the temperature below 100 °C, were chosen to restrict the xylose dehydration into furfural as described in recent reviews [25] [30] [32] [41] [42]. "
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