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Esterification of levulinic acid to ethyl levulinate over bimodal micro–mesoporous H/BEA zeolite derivatives

Paper ID Volume ID Publish Year Pages File Format Full-Text
50439 46794 2014 4 PDF Available
Title
Esterification of levulinic acid to ethyl levulinate over bimodal micro–mesoporous H/BEA zeolite derivatives
Abstract

•NaOH treatment to H/BEA zeolite yielded its bimodal micro–mesoporous derivative.•Enhanced esterification of renewable levulinic acid (LA) to ethyl levulinate (EL).•H/BEA0.10 exhibited maximum LA conversion of 40 % with 98 % EL selectivity.•Mesoporosity, crystallinity & acidity of zeolite play crucial role in EL synthesis.

A series of bimodal micro–mesoporous H/BEA zeolite derivatives were prepared by the post-synthesis modification of H/BEA zeolite by NaOH (0.05 M–1.2 M) treatment. Samples were characterized by powder XRD, low temperature nitrogen adsorption/desorption, temperature programmed desorption of ammonia and ICP. The mesopore formation was found to play a crucial role in liquid phase esterification of levulinic acid with ethanol. The enhanced catalytic activity of a bimodal micro–mesoporous H/BEA zeolite derivative (H/BEA0.10) prepared by treatment with 0.1 M NaOH can be mainly attributed to the high mesoporosity coupled with better preserved crystallinity and acidic properties.

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Keywords
H/BEA zeolite; Post-synthesis modification; Mesoporosity; Esterification; Ethyl levulinate
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Esterification of levulinic acid to ethyl levulinate over bimodal micro–mesoporous H/BEA zeolite derivatives
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 43, 5 January 2014, Pages 188–191
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
You save - $31
Price after discount Only $4.95
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