Selective conversion of glucose into lactic acid and acetic acid with copper oxide under hydrothermal conditions

Wang, Yuanqing; Jin, Fangming; Sasaki, Mitsuru; Diono, Wahyu; Wang, Fengwen; Jing, Zhenzi; Goto, Motonobu

doi:10.1002/aic.13960

Cited by 68 publications

(45 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lingoes have reported the formation of 2% acetic acid in the lactic acid dehydration using barium based catalysts [22]. Much higher yield in acetic acid by chemo-catalysis were observed by Wang et al from glucose via lactic acid using copper oxide catalyst (32%) [23]. Here, we report efficient and highly selective catalysts for the production of acetic acid.…”

Section: Introductionmentioning

confidence: 72%

High yield lactic acid selective oxidation into acetic acid over a Mo-V-Nb mixed oxide catalyst

Lomate

Katryniok

Dumeignil

et al. 2015

sustain chem process

View full text Add to dashboard Cite

In this paper, we report for the first time a one-pot reaction enabling total transformation of lactic acid to acetic acid over a Mo-V-Nb mixed oxide catalyst having an optimal atomic ratio 19:5:1. The mechanism of the reaction consists in two parallel ways leading to acetic acid: (i) oxi-dehydrogenation of lactic acid to pyruvic acid followed by decarboxylation and (ii) decarbonylation of lactic acid to acetaldehyde followed by oxidation. In the operating conditions we used, the catalyst is very active (total conversion of lactic acid) and selective towards acetic acid (100% selectivity). A 100% yield into acetic acid is hence obtained.

show abstract

Section: Introductionmentioning

confidence: 72%

High yield lactic acid selective oxidation into acetic acid over a Mo-V-Nb mixed oxide catalyst

Lomate

Katryniok

Dumeignil

et al. 2015

sustain chem process

View full text Add to dashboard Cite

show abstract

“…50 The experiments were replicated at least three times and were reported as the mean values. 50 The experiments were replicated at least three times and were reported as the mean values.…”

Section: Discussionmentioning

confidence: 99%

Highly active tin(iv) phosphate phase transfer catalysts for the production of lactic acid from triose sugars

Wang

Liang

Huang

et al. 2015

Catal. Sci. Technol.

View full text Add to dashboard Cite

Lactic acid (LA) is an important intermediate in the fine chemical industry because it is utilized as a building block for the production of biodegradable plastics. In this study, a series of tin phosphate phase transfer catalysts modified with several surfactants have been prepared by a facile one-pot synthesis method and tested for the direct conversion of trioses to LA under hydrothermal conditions. Poly(ethylene glycol) (PEG) was identified as the most promising surfactant, and the product distribution closely depended on the reaction temperature, catalyst loading and substrate concentration. Complete DHA conversion and a good yield of up to 96.1% of LA were obtained at 140°C after 4 h of reaction time. Pyridine FTIR demonstrated the presence of Brønsted and Lewis acid sites, which play crucial roles in the dehydration of DHA to pyruvaldehyde (PA) and the following isomerization of generated PA to LA. Furthermore, the isomerization of PA to LA was found to be the rate-determining step. A possible reaction mechanism was proposed: 1) the coordination between PEG and the metal ions caused a greater separation of the tin ions from the phosphate anions, making them more potent Lewis acid sites, and 2) the PEG behaved as a phase transfer catalyst during the reaction. This study paves the way for the further design of improved solid acid catalysts for aqueous phase production of LA from carbohydrates.Catal. Sci. Technol. This journal is † Electronic supplementary information (ESI) available: Catalytic conversion of GLA to LA by SnP with various surfactants, the results of DHA after a prolonged reaction time of 6 h and the postulated roles of SnP-PEG2000. See

show abstract

“…[1][2][3][4][5][6][7][8] Biomass, as the only renewable carbon source on the earth, is being considered as a promising feedstock for the sustainable production of fuels and chemicals. [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] Cellulose is the most abundant biomass and accounts for 35-50 wt % of lignocellulosic materials. 12 Unlike starch, the inedible nature of cellulose allows for the extensive utilization without threatening the food supply.…”

Section: Introductionmentioning

confidence: 99%

Kinetic study of retro‐aldol condensation of glucose to glycolaldehyde with ammonium metatungstate as the catalyst

et al. 2014

View full text Add to dashboard Cite

The kinetics of the retro‐aldol condensation of glucose to glycolaldehyde was studied in a batch reactor at 423–453 K using ammonium metatungstate (AMT) as the catalyst. Three consecutive reactions were considered: retro‐aldol condensation of glucose to erythrose and glycolaldehyde (R1), retro‐aldol condensation of erythrose to two moles of glycolaldehyde (R2), and further conversion of glycolaldehyde to side products (R3). Fitting of the experimental data showed that R1 was first‐order reaction while R2 and R3 were 1.7th‐ and 2.5th‐order reaction, respectively. Conversely, the reaction rate of R1 was 0.257th‐order dependence on the concentration of AMT catalyst. The apparent activation energies for R1, R2, and R3 were 141.3, 79.9, and 52.7 kJ/mol, respectively. The high activation energy of R1 suggests that a high temperature is favorable to the formation of glycolaldehyde. The experimental C–t curves at different temperatures and initial glucose concentrations were well predicted by the kinetic model. © 2014 American Institute of Chemical Engineers AIChE J, 60: 3804–3813, 2014

show abstract

Selective conversion of glucose into lactic acid and acetic acid with copper oxide under hydrothermal conditions

Cited by 68 publications

References 31 publications

High yield lactic acid selective oxidation into acetic acid over a Mo-V-Nb mixed oxide catalyst

High yield lactic acid selective oxidation into acetic acid over a Mo-V-Nb mixed oxide catalyst

Highly active tin(iv) phosphate phase transfer catalysts for the production of lactic acid from triose sugars

Kinetic study of retro‐aldol condensation of glucose to glycolaldehyde with ammonium metatungstate as the catalyst

Contact Info

Product

Resources

About