Catalytic oxidation kinetics of arabinose on supported gold nanoparticles

Leolincoln da Silva Correia; Henrik Grénman; Johan Wärnå; Tapio Salmi; Dmitry Murzin

doi:10.1016/j.cej.2019.03.241

Catalytic oxidation kinetics of arabinose on supported gold nanoparticles

Leolincoln da Silva Correia, Henrik Grénman, Johan Wärnå, Tapio Salmi, Dmitry Murzin

Kestävän tulevaisuuden teknologiat

Tutkimustuotos: Lehtiartikkeli › Artikkeli › Tieteellinen › vertaisarvioitu

14 Sitaatiot (Scopus)

84 Lataukset (Pure)

Abstrakti

Oxidation of sugars from hemicelluloses represents an important lignocellulosic biomass valorization process and has been considered as an option to decrease high dependency of chemical industry on fossil feedstock. Gold nanoparticles as an arabinose oxidation catalyst under alkaline conditions result in high selectivity towards aldonic acids. In this work, kinetics of selective oxidation of L-arabinose to arabinonic acid over Au/Al₂O₃ was studied using data from experiments in a semibatch shaker reactor under pH-controlled conditions at atmospheric pressure. A novel model considering molecular adsorption of oxygen, production of H₂O₂ and different skeletal isomers of arabinose as reactants is reported. An experiment with D-arabinose was carried out in a conventional semibatch reactor and the model adequately predicted the results.

Alkuperäiskieli	Ei tiedossa
Sivut	952–961
Julkaisu	Chemical Engineering Journal
Vuosikerta	370
DOI - pysyväislinkit	https://doi.org/10.1016/j.cej.2019.03.241
Tila	Julkaistu - 2019
OKM-julkaisutyyppi	A1 Julkaistu artikkeli, soviteltu

Pääsy asiakirjaan

10.1016/j.cej.2019.03.241

Catalytic oxidation kinetics of arabinose on supported gold nanoparticles.pdfHyväksytty kirjoittajan käsikirjoitus, 1,86 MBLisenssi: CC BY-NC-ND

Viittausmuodot

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abstract = "Oxidation of sugars from hemicelluloses represents an important lignocellulosic biomass valorization process and has been considered as an option to decrease high dependency of chemical industry on fossil feedstock. Gold nanoparticles as an arabinose oxidation catalyst under alkaline conditions result in high selectivity towards aldonic acids. In this work, kinetics of selective oxidation of L-arabinose to arabinonic acid over Au/Al2O3 was studied using data from experiments in a semibatch shaker reactor under pH-controlled conditions at atmospheric pressure. A novel model considering molecular adsorption of oxygen, production of H2O2 and different skeletal isomers of arabinose as reactants is reported. An experiment with D-arabinose was carried out in a conventional semibatch reactor and the model adequately predicted the results.",

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T1 - Catalytic oxidation kinetics of arabinose on supported gold nanoparticles

AU - da Silva Correia, Leolincoln

AU - Grénman, Henrik

AU - Wärnå, Johan

AU - Salmi, Tapio

AU - Murzin, Dmitry

N1 - tk. begäran om fulltext 13.2.20 /MF 15 August 2019 post-print, 24 mån embargo, CC-BY-NC-ND

PY - 2019

Y1 - 2019

N2 - Oxidation of sugars from hemicelluloses represents an important lignocellulosic biomass valorization process and has been considered as an option to decrease high dependency of chemical industry on fossil feedstock. Gold nanoparticles as an arabinose oxidation catalyst under alkaline conditions result in high selectivity towards aldonic acids. In this work, kinetics of selective oxidation of L-arabinose to arabinonic acid over Au/Al2O3 was studied using data from experiments in a semibatch shaker reactor under pH-controlled conditions at atmospheric pressure. A novel model considering molecular adsorption of oxygen, production of H2O2 and different skeletal isomers of arabinose as reactants is reported. An experiment with D-arabinose was carried out in a conventional semibatch reactor and the model adequately predicted the results.

AB - Oxidation of sugars from hemicelluloses represents an important lignocellulosic biomass valorization process and has been considered as an option to decrease high dependency of chemical industry on fossil feedstock. Gold nanoparticles as an arabinose oxidation catalyst under alkaline conditions result in high selectivity towards aldonic acids. In this work, kinetics of selective oxidation of L-arabinose to arabinonic acid over Au/Al2O3 was studied using data from experiments in a semibatch shaker reactor under pH-controlled conditions at atmospheric pressure. A novel model considering molecular adsorption of oxygen, production of H2O2 and different skeletal isomers of arabinose as reactants is reported. An experiment with D-arabinose was carried out in a conventional semibatch reactor and the model adequately predicted the results.

U2 - 10.1016/j.cej.2019.03.241

DO - 10.1016/j.cej.2019.03.241

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