NDLI: Glycerol conversion to lactic acid with sodium hydroxide as a homogeneous catalyst in a fed-batch reactor

Content Provider	Springer Nature Link
Author	Chen, Lu Ren, Shoujie Ye, X. Philip
Copyright Year	2014
Abstract	This study investigated a fed-batch process for glycerol conversion to lactic acid with sodium hydroxide (NaOH) as homogeneous catalyst, with the aim to reduce the corrosiveness of catalyst to reactor. At the optimal conditions of the fed-batch process (1.1 M initial glycerol concentration, reaction time of 220 min, reaction temperature of 300 °C, NaOH concentration around 0.2 M), lactic acid yield reached 82 mol%, with 93 mol% of glycerol conversion. A first order kinetic model in the fed-batch conversion of glycerol was developed and validated under different process conditions. The corrosiveness to stainless steel reactor in glycerol conversion in the fed-batch process, measured as Fe$^{3+}$ at the end of reaction, decreased from 9.5 to 1.5 ppm Fe$^{3+}$ when compared to a batch process using a homogeneous 1.25 M NaOH as catalyst. Application of the fed-batch reactor in the crude glycerol conversion reached the maximum lactic acid yield of 72.9 mol% with 92.4 mol% glycerol conversion, but high soap content in crude glycerol has negative effects on both lactic acid yield and glycerol conversion.
Starting Page	93
Ending Page	108
Page Count	16
File Format	PDF
ISSN	18785190
Journal	Reaction Kinetics and Catalysis Letters
Volume Number	114
Issue Number	1
e-ISSN	18785204
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-09-21
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Fed-batch reactor Glycerol Lactic acid Sodium hydroxide Catalysis Physical Chemistry Industrial Chemistry/Chemical Engineering
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Catalysis

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