From renewable raw materials to high value-added fine chemicals—Catalytic hydrogenation and oxidation of d-lactose

Kuusisto, Jyrki; Tokarev, A. V.; Murzina, Elena V.; Roslund, Mattias U.; Mikkola, Jyri‐Pekka; Murzin, Dmitry Yu.; Salmi, Tapio

doi:10.1016/j.cattod.2006.11.020

Cited by 75 publications

(56 citation statements)

References 22 publications

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“…Reaction conditions have been optimized over Pd/C catalysts during lactose oxidation. The highest yield of LBA obtained by our group was 99.1%, with complete conversion of lactose over Au/CeO 2 catalyst [4]. Pd/C catalysts are, however, extensively used in industry because of their availability, relatively low price, and the possibility of recovering the noble metal.…”

mentioning

confidence: 95%

“…Moreover the isomerisation product lactulose can be hydrogenated to lactitutol under reducing conditions. A complete reaction scheme was presented in our recent publication [4].…”

mentioning

confidence: 99%

“…Catalytic oxidation of lactose has been studied over different catalysts, for example Pd/C [3,4], Pd/Al 2 O 3 [5], Au/CeO 2 [4], Au/Al 2 O 3 [4], and Pt/Sibunit [4]. Reaction conditions have been optimized over Pd/C catalysts during lactose oxidation.…”

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confidence: 99%

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Lactose oxidation over palladium catalysts supported on active carbons and on carbon nanofibres

et al. 2009

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Liquid-phase lactose oxidation was investigated over supported Pd/C and Pd-carbon nanofibre catalysts, which were characterized by several methods. A complex relationship between catalyst activity and catalyst acidity was established, i.e. optimum catalyst acidity resulted in the highest activity in lactose oxidation. In-situ catalyst potential measurements during lactose oxidation gave information about the extent of accumulation of oxygen on the metal surface. These results could be correlated with catalyst deactivation, which was extensive over the most acidic catalysts at low reaction temperatures. Selectivity for the desired product, lactobionic acid, was a maximum of approximately 83% at 93% conversion. The main side-product was lactulose formed via isomerisation of lactose. Lower selectivity toward lactobionic acid was obtained when the rate of oxidation of lactose was low.

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confidence: 95%

“…Moreover the isomerisation product lactulose can be hydrogenated to lactitutol under reducing conditions. A complete reaction scheme was presented in our recent publication [4].…”

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confidence: 99%

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Lactose oxidation over palladium catalysts supported on active carbons and on carbon nanofibres

et al. 2009

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“…Among different supported metal catalysts (Pt, Pd, Au, Ru, Ni), the optimum pH for lactose oxidation was between eight and nine, and lactose oxidation catalysts deactivate rapidly at low pH and at high oxygen concentrations. The highest lactobionic acid yield (99.1 %) was obtained of 100 % conversion with a 2 wt.% Au/CeO 2 catalyst at 60 °C and pH 8 [ 90 ]. A 0.7 wt.% Au/SiO 2 catalyst using a silane coupling agent performed a 100 % conversion and selectivity to lactobionic acid with a catalyst to lactose ratio of 0.2 after 100 min of reaction at pH 9.0 and a mild reaction temperature of 65 °C [ 86 ].…”

Section: Selective Oxidation Of Other Pentoses or Hexoses To Aldonic mentioning

confidence: 83%

Catalytic Oxidation Pathways for the Production of Carboxylic Acids from Biomass

Yang

et al. 2016

Green Chemistry and Sustainable Technology

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The transition from a fossil chemical industry to a renewable chemical industry depends on breakthroughs in the research and development on the most promising alternatives. Biomass is such a class of renewable raw carbon materials for the production of fuels and chemicals, with growing interest among researchers aiming to achieve global sustainability. Catalytic oxidation of biomass can lead to multiple products, and the challenge is to direct the reaction pathways to the desired products. Organic acids are among the listed "platform molecules," which have the potential to be further converted into high-value-added chemicals. In this chapter, various pathways are reviewed for catalytic oxidation of a variety of biomass to produce value-added organic acids.

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“…Moreover, synthesized polyols can play a key role in the production of biofuels from renewable sources [15]. The most important saccharide hydrogenation processes are glucose, xylose, maltose, and lactose hydrogenation to the corresponding alcohols [15][16][17][18][19]. The catalytic method of D-glucose hydrogenation to D-sorbitol is a complex process ( Figure 1) providing several reaction routes.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Mesoporous Polymer Matrix Nature on the Formation of Catalytically Active Ruthenium Nanoparticles

Sulman

Doluda

Grigoryev

et al. 2015

Bull. Chem. React. Eng. Catal.

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This paper reports on ruthenium nanoparticles formation and stabilization by hypercrosslinked polystyrene and the catalytic properties of the nanocomposites obtained. Hypercrosslinked polystyrene with functional groups and without them was used. The nanocomposites were characterized using lowtemperature nitrogen physisorption, X-ray photoelectron spectroscopy and transmission electron microscopy. It is established that the tertiary amine group of the support influences both formation of ruthenium nanoparticles, and their catalytic properties in the selective hydrogenation of D-glucose.

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From renewable raw materials to high value-added fine chemicals—Catalytic hydrogenation and oxidation of d-lactose

Cited by 75 publications

References 22 publications

Lactose oxidation over palladium catalysts supported on active carbons and on carbon nanofibres

Lactose oxidation over palladium catalysts supported on active carbons and on carbon nanofibres

Catalytic Oxidation Pathways for the Production of Carboxylic Acids from Biomass

Influence of the Mesoporous Polymer Matrix Nature on the Formation of Catalytically Active Ruthenium Nanoparticles

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