Y-Zeolite catalysts have the potential to promote the
shape-selective conversion of glucose to oxygenated
hydrocarbons at fairly low temperature (100 to 130°C).
Reaction of glucose solution with H-Y Zeolite catalyst
powder was carried out in a well-mixed batch reactor. This
reaction was studied as a function of reaction time (0 to 24
hours), temperature (100 to 130°C), catalyst loading (10:1
to 1:1 glucose:Y-Zeolite), and initial glucose concentration
(12% to 58% g glucose/g solution). Unreacted glucose and
reaction products were analyzed by HPLC.
The dehydration of glucose solution by H-Y Zeolite
catalyst powder resulted in 90% conversion at 2:1 glucose:
H-Y Zeolite and 130°C. At these conditions, maximum
levulinic acid and formic acid yields were 15% and 30%
respectively.
A pseudo first-order process was used to estimate the
apparent rate constant for glucose conversion at various
temperatures. From the Arrhenius equation, the apparent
activation energy was estimated as 22.06 kCal/mole for
glucose solution initially at 12% weight.
Based on the product distribution data, a reaction
model for glucose dehydration to HMF, levulinic acid, and
formic acid in Y-Zeolite catalysts was proposed. / Graduation date: 1992
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/36668 |
| Date | 26 June 1991 |
| Creators | Lourvanij, Khavinet |
| Contributors | Rorrer, Gregory L. |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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