Sugar-Derived Industrially Important C6 Platform Chemicals

Goswami, Rachna; Mishra, Vijay Kumar

doi:10.1016/b978-0-12-802980-0.00013-4

Cited by 4 publications

(2 citation statements)

References 82 publications

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“…Oxygen is a required element for producing all of these high-value chemicals, as it is needed for the targeted preparation of active functional groups, such as keto, aldehyde, and carboxyl groups. 27–29 Accordingly, it is essential to use intrinsic oxygen atoms efficiently and avoid the need for the additional input of oxygen when performing basic dehydration and deoxygenation. The direct dehydration of sugar acids involves more intrinsic oxygen atoms, which are present in several oxygen-containing functional groups ( i.e.…”

Section: Introductionmentioning

confidence: 99%

Application of sugar-containing biomass: one-step synthesis of 2-furylglyoxylic acid and its derivatives from a vitamin C precursor

et al. 2022

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Section: Introductionmentioning

confidence: 99%

Application of sugar-containing biomass: one-step synthesis of 2-furylglyoxylic acid and its derivatives from a vitamin C precursor

et al. 2022

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“…In 2016, sorbitol produced almost 1.8 billion tons each year and will get higher products every year. The presence of sorbitol is very important in many cases of diabetes because it is safe to use as a sugar substitute for glucose and does not reduce the sweet taste when consumed [3]. Hydrogenation of glucose is one interesting way to produce sorbitol because glucose is considered an abundant and easily available material [4].…”

Section: Introductionmentioning

confidence: 99%

Raney nickel synthesis for glucose hydrogenation without hydrogen gas

Rahmi¹,

Jamarun²

2022

World J. Adv. Res. Rev.

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Hydrogenation of glucose into sorbitol has been a concern of researchers for a long time because it is an efficient and economical way of producing sorbitol. The researchers look for alternative metals that are higher in abundance and have good hydrogenation activity, such as nickel. In this study, porous nickel was prepared and used as a catalyst for the hydrogenation of glucose to sorbitol without adding hydrogen gas. The porous nickel needs two stages of making. First, prepare the Ni/Al metal alloys from the reduction of Ni(II) and Al(III). Second, the process of removing Al (0) metal from Ni/Al metal mixtures to produce porous Ni, generally called Raney Ni (RaNi). The prepared RaNi characterize using P-XRD and N2 physisorption. X-ray diffraction results show typical nickel (0) diffraction patterns at 2 theta 44.5° (111), 51.8° (200), and 76.4° (220). The results of N2 physisorption on RaNi showed a surface area of 64 m2/g and a pore diameter of 6.13 nm. The hydrogenation reaction of glucose without adding hydrogen gas was carried out for 6 hours at 80 °C using isopropyl alcohol as a hydrogen source. The reaction products were analyzed using 1H-NMR by observing the proton chemical shift of the methine and methylene groups of sorbitol at 3.53-3.78 ppm and using the DNS (3-5, dinitrosalysilic acid) test to determine the remaining glucose in the solution. The reaction product tested using DNS showed that the amount of glucose converted was 54% when RaNi was synthetic as a catalyst.

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The oxidation of d‐galactose into mucic acid (galactaric acid): experimental and computational insights towards a bio‐based platform chemical

Pasquale,

Chiacchio,

Acciaretti

et al. 2024

Asian J Org Chem

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Aldaric acids are becoming valuable platform chemicals in bioeconomy and circular economy approaches. Among them, mucic acid (meso‐galactaric acid) is gaining industrial attention as a bio‐based precursor of adipic acid found in polyamides, and of 2,5‐furan dicarboxylic acid, a valuable substitute for terephthalic acid in polyesters. A combination of detailed experimental protocols and conditions with DFT computational calculations for the synthesis of mucic acid from galactose are herein described. The product is obtained by reaction with diluted aqueous nitric acid as the oxidizing agent and the reaction medium. Optimized reaction conditions require 5 M nitric acid, 95 °C, galactose/HNO3 molar ratio 1:9, 100 g/L galactose concentration in the reaction medium. Computational calculations suggest that the oxidation mechanism may involve a contextual oxygen protonation and nitrate nucleophilic attack, leading to the oxidized product. The proposed mechanism requires a stoichiometry of 6 moles of nitric acid per galactose mole, albeit both experimental and computational data evidence that proton excess may be necessary to start the reaction. The reported study gives useful insights for the production of galactaric acid.

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Sugar-Derived Industrially Important C6 Platform Chemicals

Cited by 4 publications

References 82 publications

Application of sugar-containing biomass: one-step synthesis of 2-furylglyoxylic acid and its derivatives from a vitamin C precursor

Application of sugar-containing biomass: one-step synthesis of 2-furylglyoxylic acid and its derivatives from a vitamin C precursor

Raney nickel synthesis for glucose hydrogenation without hydrogen gas

The oxidation of d‐galactose into mucic acid (galactaric acid): experimental and computational insights towards a bio‐based platform chemical

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