scholarly journals MODELING AND OPTIMIZATION OF LACTIC ACID SYNTHESIS BY THE ALKALINE DEGRADATION OF FRUCTOSE IN A BATCH REACTOR

2005 ◽  
Vol 192 (6) ◽  
pp. 758-786 ◽  
Author(s):  
M. Cabassud ◽  
P. Cognet ◽  
V. Garcia ◽  
M. V. LE LANN ◽  
G. Casamatta ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Batch Reactor ◽  
Acid Synthesis ◽  
Alkaline Degradation ◽  
Modeling And Optimization

scholarly journals Production of lactic acid from cellulose using solid catalyst

2019 ◽  
Vol 268 ◽  
pp. 07006 ◽  
Author(s):  
Sujitra Doungsri ◽  
P. Rattanaphanee ◽  
Aatichat Wongkoblap
Keyword(s):  
Lactic Acid ◽  
Batch Reactor ◽  
Nitrogen Pressure ◽  
Reaction Pathways ◽  
Solid Catalyst ◽  
One Pot ◽  
Solid Catalysts ◽  
Platform Chemicals ◽  
Acid And Base ◽  
The One

Lactic acid (LA), one of the important biomass derived platform chemicals, has been used in food and chemical industries, especially in biodegradable polymer as polylactic acid (PLA). The aim of this work is to study the one-pot production of LA from cellulose by using different solid catalysts. The reaction was conducted in a high pressure batch reactor and the catalyst used in this study were ZrO2 and Al2O3. The reaction was carried out at temperature of 200oC for 6 hr. and under nitrogen pressure of 1 MP. It was found that the production yield of LA were 8.02% and 6.63%, when the ZrO2 and Al2O3 catalysts were used respectively. The result indicated that the ZrO2 may effect on the LA production because of the acid and base sites of the ZrO2. Therefore, the reaction pathways for conversion of cellulose into lactic acid have been investigated, and developed the new conditions to achieve the higher yield.

Functionalized poly l-lactic acid synthesis and optimization of process parameters for 3D printing of porous scaffolds via digital light processing (DLP) method

2020 ◽  
Vol 56 ◽  
pp. 550-561 ◽  
Author(s):  
Arvin Bagheri Saed ◽  
Amir Hossein Behravesh ◽  
Sadegh Hasannia ◽  
Seyyed Alireza Alavinasab Ardebili ◽  
Behnam Akhoundi ◽  
...  
Keyword(s):  
Lactic Acid ◽  
3D Printing ◽  
Process Parameters ◽  
Acid Synthesis ◽  
Porous Scaffolds ◽  
Digital Light Processing ◽  
Optimization Of Process Parameters

Mechanisms of alkaline degradation of sucrose. Relative rates of alkaline degradation of some sucrose derivatives

1980 ◽  
Vol 33 (5) ◽  
pp. 1041 ◽  
Author(s):  
M Manley-Harris ◽  
W Moody ◽  
GN Richards
Keyword(s):  
Lactic Acid ◽  
Alkaline Degradation ◽  
Rate Determining Step

An earlier study of the relative rates of degradation of several sucrose derivatives has been refined and extended. The results support a novel hypothesis to explain the unusual alkali-lability of sucrose (1). In this hypothesis the first and rate-determining step in the degradation is an SN1cB displacement effected at the C1 anomeric centre of the glucose moiety by an oxyanion derived from the C1' hydroxyl (10), to produce 1-(α-D-glucopyranosyl)fructose (11). The latter is then very rapidly degraded, mainly to lactic acid. The possibility of analogous competing displacements involving the 3' and 6' oxyanions remains for further investigation.

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