Mechanocatalytic Depolymerization of Cellulose With Perfluorinated Sulfonic Acid Ionomers
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چکیده
منابع مشابه
Mechanocatalytic Depolymerization of Cellulose With Perfluorinated Sulfonic Acid Ionomers
Here, we investigated that the mechanocatalytic depolymerization of cellulose in the presence of Aquivion, a sulfonated perfluorinated ionomer. Under optimized conditions, yields of water soluble sugars of 90-97% were obtained using Aquivion PW98 and PW66, respectively, as a solid acid catalyst. The detailed characterization of the water soluble fraction revealed (i) the selective formation of ...
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Low molecular weight cellulose propionate (CP) segments were synthesized by HBr hydrolysis under esterification conditions using either a commercial CP with residual hydroxyl groups (DSOH ca. 0.4) or a tripropionate (CTP). The hydrolysis using CTP yielded segments having a minimum DP of as low as 7, whereas the hydrolysis of the commercial CP resulted in segments having a minimum DP of 50. Diff...
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Catalytic activities of eight sulfonic acid group functionalized ionic liquids in water were compared for the hydrolysis of Sigmacell cellulose (DP ~ 450) in the 150-180°C temperature range by measuring total reducing sugar (TRS) and glucose produced. The catalytic activity of acidic ionic liquids with different cation types decreases in the order imidazolium > pyridinium > triethanol ammonium ...
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A solvent-free process was developed for the direct production of lactic acid from glucose in a mechanocatalytic process in the presence of Ba(OH)2, and a moderate lactic acid yield of 35.6% was obtained. Glucose conversion and lactic acid formation were favorable at higher catalyst/glucose mass ratios. However, at relatively lower catalyst/glucose mass ratios, they were greatly inhibited, and ...
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ژورنال
عنوان ژورنال: Frontiers in Chemistry
سال: 2018
ISSN: 2296-2646
DOI: 10.3389/fchem.2018.00074