Ni-Fe alloying enhances the efficiency of the maltose hydrogenation process: The role of surface species and kinetic study

Sadier, Achraf; Paul, Sébastien; Marceau, Éric; Wojcieszak, Robert

doi:10.1016/j.apcatb.2022.121446

Cited by 8 publications

(11 citation statements)

References 37 publications

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“…Thus, a pseudo-first-order dependence concerning maltose was obtained for preliminary analysis, consisting of the reported simplified models applied to glucose, xylose, and maltose hydrogenation. 16,35,36 Furthermore, the reaction rates remained constant when the stirrer speed was fixed above 500 rpm (Figure 1B). The influence of catalyst mass on maltose conversion was also explored under 130 C and 8 MPa H 2 .…”

Section: Maltose Hydrogenationmentioning

confidence: 90%

Maltose hydrogenation to maltitol over industrial Raney Ni catalyst: Kinetics and mechanism

Fan

Zhao

et al. 2023

AIChE Journal

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The kinetics and mechanisms of selective maltose hydrogenation over Raney Ni remain poorly understood, which hinders the industrial advancement of maltitol production for biorefining. Herein, the impact of hydrogenation conditions and in-depth mechanistic characterizations were carefully investigated in this research. Optimization of reaction conditions illustrated that maltitol formation was favored by moderate reaction temperatures (≤130 C), high hydrogen pressures (>7 MPa), and nearneutral sodium phosphate buffer (pH = 6.47). Kinetic studies demonstrated the E a of 45.5 kJ/mol for the hydrogenation of maltose. The in situ IR revealed that the hydrogenation of maltose over Raney Ni occurs in the order of ring opening and adsorption via C O of the aldose form followed by hydrogenation. The UV-vis spectra demonstrated the near-neutral setting (pH = 6.47) promoted the production of open-chain aldose conformation and selective C O hydrogenation to the corresponding alcohols. The present study on concentrated-maltose hydrogenation paves the way for the industrial development of maltitol manufacturing.

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Section: Maltose Hydrogenationmentioning

confidence: 90%

Maltose hydrogenation to maltitol over industrial Raney Ni catalyst: Kinetics and mechanism

Fan

Zhao

et al. 2023

AIChE Journal

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“…The Ni-Fe alloy is a good option to replace nickel catalysts. A Ni 62 Fe 38 /SiO 2 bimetallic catalyst prepared by deposition-precipitation with urea (DPU) showed high activity in the hydrogenation of xylose and maltose in water [49,50]. We showed that the temperatures of 50-80 • C are most favored due to the limitation of the metal leaching and the presence of a kinetic regime even for high masses of the catalyst.…”

Section: Reactions Involving Hydrogen 221 Carbohydrate Hydrogenationmentioning

confidence: 95%

“…The hydrogenation of the carbonyl groups of carbohydrates leads to the formation of polyols. Industrially, the three most important polyols are: sorbitol (from glucose) [47,48], xylitol (from xylose) [49] and maltitol (from maltose) [50]. In the case of xylitol, for example, the global industrial production is estimated to be about around 200 kt/year.…”

Section: Reactions Involving Hydrogen 221 Carbohydrate Hydrogenationmentioning

confidence: 99%

Strengthening the Connection between Science, Society and Environment to Develop Future French and European Bioeconomies: Cutting-Edge Research of VAALBIO Team at UCCS

Araque¹,

Noronha

Capron³

et al. 2022

Molecules

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The development of the future French and European bioeconomies will involve developing new green chemical processes in which catalytic transformations are key. The VAALBIO team (valorization of alkanes and biomass) of the UCCS laboratory (Unité de Catalyse et Chimie du Solide) are working on various catalytic processes, either developing new catalysts and/or designing the whole catalytic processes. Our research is focused on both the fundamental and applied aspects of the processes. Through this review paper, we demonstrate the main topics developed by our team focusing mostly on oxygen- and hydrogen-related processes as well as on green hydrogen production and hybrid catalysis. The social impacts of the bioeconomy are also discussed applying the concept of the institutional compass.

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“…12,13 A more sustainable substitute can be RANEY® nickel, 14 which, however, induces hydrogenolysis side-reactions, owing to its high hydroconversion activity, and is prone to deactivation. Interestingly, the association of Ni and of an abundant metal, Fe, within bimetallic nanoparticles (NPs) has recently shown potential for the hydrogenation of monosaccharides [15][16][17] and disaccharides 18 in terms of activity and stability. However, the development of a catalytic formulation requires the proper tuning of the chemical and structural properties of the active phase, and that is not trivial for bimetallic catalysts.…”

Section: Introductionmentioning

confidence: 99%

In situ study of the evolution of NiFe nanocatalysts in reductive and oxidative environments upon thermal treatments

Robert

Lecante

Girardon³

et al. 2023

Faraday Discuss.

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Ni-Fe alloying enhances the efficiency of the maltose hydrogenation process: The role of surface species and kinetic study

Cited by 8 publications

References 37 publications

Maltose hydrogenation to maltitol over industrial Raney Ni catalyst: Kinetics and mechanism

Maltose hydrogenation to maltitol over industrial Raney Ni catalyst: Kinetics and mechanism

Strengthening the Connection between Science, Society and Environment to Develop Future French and European Bioeconomies: Cutting-Edge Research of VAALBIO Team at UCCS

In situ study of the evolution of NiFe nanocatalysts in reductive and oxidative environments upon thermal treatments

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