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Reaction Rates for the Partial Dehydration of Glucose to Organic Acids in Solid‐Acid, Molecular‐Sieving Catalyst Powders
Author(s) -
Lourvanij Khavinet,
Rorrer Gregory L.
Publication year - 1997
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/(sici)1097-4660(199705)69:1<35::aid-jctb685>3.0.co;2-9
Subject(s) - catalysis , chemistry , dehydration , formic acid , yield (engineering) , mesoporous material , organic acid , inorganic chemistry , organic chemistry , nuclear chemistry , materials science , biochemistry , metallurgy
Molecular‐sieving catalysts have the potential to promote the production of oxygenated hydrocarbons from glucose. A kinetic model for the partial dehydration of glucose to organic acids by micro‐ and mesoporous aluminosilicate catalysts was developed. Kinetic parameters were estimated from glucose conversion and product yield versus time data at 150°C for HY‐zeolite, aluminum‐pillared montmorillonite, MCM‐20 and MCM‐41 catalyst powders of 0·5 mmol H + g −1 solid‐acid activity. Rate constants for the partial dehydration of glucose to 5‐hydroxymethylfurfural (HMF) and the rehydration and cleavage of HMF to formic acid and 4‐oxopentanoic acid were maximized at catalyst pore diameters of 10–30 Å. The final organic acid product yields were low, less than 60% of theoretical for formic acid and 10% of theoretical for 4‐oxopentanoic acid, due to significant coke formation. © 1997 SCI.