Bifunctional Materials for the Catalytic Conversion of Cellulose into Soluble Renewable Biorefinery Feedstocks
作者： Damian Reyes-Luyanda , Josseant Flores-Cruz , Pedro J. Morales-Pérez , Luis G. Encarnación-Gómez , Fengyuan Shi
DOI: 10.1007/S11244-012-9791-5
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摘要: The combination of Bronsted acidity with metallic functionality in a mesoporous catalyst offers potential pathway for the conversion cellulose into sugar alcohols that may be used as sustainable source renewable biorefinery feedstock. Supported Ru catalysts were prepared by evaporative deposition on various ordered silicas (SBA-15) different functionalities and characterized using multiple experimental techniques. catalytic performance supported was compared to corresponding supports Ru/C. We studied effects functional group loading, reaction time temperature activity products yield bifunctional monitoring production sugars high-pressure batch reactor. Sorbitol is main product obtained hydrolysis glucose followed reduction. Secondary include sugars, ethylene glycol glycerol. silica increases an increase acid loading addition allows control selectivity towards alcohols. Ruthenium arenesulfonic acid-functionalized (Ru/SBA-15S) displays best performance. Ru/SBA-15S more hydrothermally stable than SBA-15, but loses significant fraction its surface area, crystallinity, after prolonged exposure water at 483 K.
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