Conversion of glycerol to lactic acid over Au/bentonite catalysts in alkaline solution

Sever, Busra; Yıldız, Meltem

doi:10.1007/s11144-020-01805-9

Cited by 16 publications

(15 citation statements)

References 30 publications

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“…Au/bentonite, along with alkali as the catalyst, has been utilized for the production of LA. [36] It was possible to investigate the effects of various reaction conditions, with the influence of catalyst quantity on glycerol conversion and LA selectivity shown in Figure 18a. When the amount of catalyst was increased from 0.1 g to 0.7 g, the LA yield was found to increase to 0.25 g, after which the yield decreased.…”

Section: Oxidation Methodsmentioning

confidence: 99%

“…LA is also used as a feedstock for the synthesis of green solvents and many valuable commodity chemicals. Besides, LA also has applications in different industries like pharmaceutical, food, and detergent industries as an acidifier, moisturizer, and to increase color resistance [36] . The different methods used for the preparation of LA are discussed in detail here.…”

Section: Lactic Acidmentioning

confidence: 99%

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Unveiling Cutting Edge Innovations in the Catalytic Valorization of Biodiesel Byproduct Glycerol into Value Added Products

et al. 2023

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The increasing production of biodiesel has led to a glut in the production of glycerol, which is a byproduct. This has resulted in the quest for alternative applications using glycerol as a cheap and readily available starting material. One promising approach is the catalytic valorization of glycerol, which converts glycerol into valuable chemicals such as 1,2‐propanediol, lactic acid, and acrolein. The glycerol formed affects the efficiency of the biodiesel, and hence it must be removed. Different processes can convert glycerol to various useful products like glycerol carbonate, glycidol, solketal, lactic acid, and glyceric acid. These different products, the processes used for synthesis, and the various catalysts used have been discussed. The most effective methods for the syntheses, the numerous catalyst systems, mechanisms of the reactions, and applications of these products in different fields are discussed in this review. The paper also discusses the challenges and opportunities of glycerol valorization, including the need for improved catalyst selectivity and activity and the potential for integrating glycerol valorization with other biorefinery processes. Overall, the catalytic valorization of glycerol offers a promising pathway for utilizing this abundantly available resource, and this review provides valuable insights for researchers and practitioners working in this area.

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Section: Oxidation Methodsmentioning

confidence: 99%

Section: Lactic Acidmentioning

confidence: 99%

Unveiling Cutting Edge Innovations in the Catalytic Valorization of Biodiesel Byproduct Glycerol into Value Added Products

et al. 2023

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“…The effect of bentonite-supported gold nanoparticles on the conversion of glycerol to LA was studied by Sever and Yildiz 70 in the presence of a base. Selectivity towards LA was enhanced upon the catalyst reduction.…”

Section: Other Catalystsmentioning

confidence: 99%

A review of the catalytic conversion of glycerol to lactic acid in the presence of aqueous base

Akbulut

Özkâr

2022

RSC Adv.

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“…However, the main limitation of Au NP activity is the requirement for alkaline conditions. Studies have clearly showed that the support nature greatly affected the catalytic performance 15‐17 . In particular, the support basicity is beneficial for the higher selectivity to C3 products without CC bond cleavage 8,18 .…”

Section: Introductionmentioning

confidence: 99%

“…Studies have clearly showed that the support nature greatly affected the catalytic performance. [15][16][17] In particular, the support basicity is beneficial for the higher selectivity to C3 products without C C bond cleavage. 8,18 For example, Liu et al disclosed that Au NPs supported on different metal oxides (Al 2 O 3 , TiO 2 , ZrO 2 , NiO, and CuO) showed a high selectivity for dihydroxyacetone, but there were significant differences in catalytic activity, revealing the influence of the support nature.…”

Section: Introductionmentioning

confidence: 99%

The support influence of Au‐based catalysts in glycerin selective oxidation to glyceric acid

Shen

Chen

et al. 2022

J of Chemical Tech & Biotech

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Background The sustainable conversion of biomass‐derived glycerin into high‐value‐added chemicals is a significant challenge in contemporary science. In this context, the selective oxidation of aqueous glycerin into glyceric acid was investigated in the presence of NaOH and atmospheric oxygen. It was demonstrated that the selective transformation of glycerin to glyceric acid involves a new chemical reaction path for commodity glyceric acid that is both abundant and economical. Results The hydrotalcite‐supported Au nanoparticle catalyst (5%Au/HT) was found to be the most active for glycerin selective transformation to glyceric acid, showing 89.5% glycerin conversion with 61.2% glyceric acid selectivity under optimum experimental conditions. Furthermore, the 5%Au/HT catalyst was reused six times and maintained nearly the same activity in the catalytic recycle experiments. Conclusion In the Au‐based catalysts, there are strong electronic interactions between the different supports and Au nanoparticles (Au NPs). Besides, the basic sites of the catalysts participated in promotion of hydroxyl functional groups. © 2022 Society of Chemical Industry (SCI).

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Conversion of glycerol to lactic acid over Au/bentonite catalysts in alkaline solution

Cited by 16 publications

References 30 publications

Unveiling Cutting Edge Innovations in the Catalytic Valorization of Biodiesel Byproduct Glycerol into Value Added Products

Unveiling Cutting Edge Innovations in the Catalytic Valorization of Biodiesel Byproduct Glycerol into Value Added Products

A review of the catalytic conversion of glycerol to lactic acid in the presence of aqueous base

The support influence of Au‐based catalysts in glycerin selective oxidation to glyceric acid

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