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A novel approach for 1,2-propylene glycol production from biomass-derived lactic acid

Paper ID Volume ID Publish Year Pages File Format Full-Text
34337 45018 2015 6 PDF Available
Title
A novel approach for 1,2-propylene glycol production from biomass-derived lactic acid
Abstract

•Efficient hydrothermal conversion of lactic acid to 1,2-propylene glycol over CuO was reported.•The use of CuO promoted 1,2-propylene glycol production from lactic acid with high selectivity and high yield.•In situ formed hydrogen by the oxidation of Zn in water is effective for the transformation than added gases hydrogen.

A novel and efficient process for the production of 1,2-propylene glycol with high productivity and high selectivity from biomass-derived lactic acid over CuO was investigated. As a result, CuO exhibited a high catalytic activity while Zn acted as a reductant for the conversion of lactic acid to 1,2-propylene glycol. Among the various reaction parameters, such as catalysts, reductants, temperature, water filling and reaction time we investigated, a 93% yield of 1,2-propylene glycol in the presence of 0.83 mmol lactic acid, 5 mmol CuO and 30 mmol Zn with 35% water filling at 250 °C for 2 h was achieved. In addition, a carbon balance at optimum reaction conditions by TOC indicated that approximately 99% lactic acid was converted into liquid products in the transformation. In situ formed hydrogen by the oxidation of Zn in water is effective for the transformation compared to added gases hydrogen. The proposed mechanism for the conversion of lactic acid to 1,2-propylene glycol over CuO is also discussed.

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Keywords
Biomass; Lactic acid; 1,2-Propylene glycol; CuO; Hydrothermal reactions
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A novel approach for 1,2-propylene glycol production from biomass-derived lactic acid
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 50, Issue 5, May 2015, Pages 793–798
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us