Arabinose Oxidation in a Fixed Bed of Extrudates and Solid Foams Containing Gold Nanoparticles Full article
| Journal |
Chemical Engineering Journal
ISSN: 1385-8947 , E-ISSN: 1873-3212 |
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| Output data | Year: 2023, Volume: 474, Article number : 145659, Pages count : 12 DOI: 10.1016/j.cej.2023.145659 | ||||
| Tags | Sugar oxidations; Gold catalysts; Arabinose; Fixed bed; Extrudates; Aluminum foam; Kinetic modelling | ||||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Academy of Finland | 319002 |
| 2 | Ministry of Science and Higher Education of the Russian Federation | 0239-2021-0008 |
Abstract:
Oxidation of arabinose was investigated in a tandem reactor system comprising a fixed bed of gold catalysts supported on extrudates or solid foams and a stirred tank allowing operation under constant pH of 8. Powder catalyst containing 3 wt% Au deposited on γ-alumina was extruded with γ-alumina and attapulgite or sepiolite as a binder or deposited on the solid open-cell aluminum foam after anodic oxidation pretreatment. Alternatively, deposition precipitation of gold with urea from HAuCl4 precursor was done directly on the extruded support or the solid foam.
The presence of gold was essential for catalytic activity which in the applied reactor set-up was strongly limited by mass transfer. Arabinose was rather selectively (ca. 90–95% at full conversion) oxidized to arabinonic acid giving besides arabinolactone other by-products. A mathematical model was developed for the open foam catalyst structures and the extrudates, comprising intrinsic kinetics deduced from batch experiments and the mass transfer within the solid catalyst.
Cite:
Simakova I.L.
, Hachhach M.
, Aho A.
, Eränen K.
, Wärnå J.
, Salmi T.
, Murzin D.Y.
Arabinose Oxidation in a Fixed Bed of Extrudates and Solid Foams Containing Gold Nanoparticles
Chemical Engineering Journal. 2023. V.474. 145659 :1-12. DOI: 10.1016/j.cej.2023.145659 WOS Scopus РИНЦ AN OpenAlex
Arabinose Oxidation in a Fixed Bed of Extrudates and Solid Foams Containing Gold Nanoparticles
Chemical Engineering Journal. 2023. V.474. 145659 :1-12. DOI: 10.1016/j.cej.2023.145659 WOS Scopus РИНЦ AN OpenAlex
Dates:
| Submitted: | Apr 13, 2023 |
| Accepted: | Aug 24, 2023 |
| Published online: | Aug 25, 2023 |
| Published print: | Oct 15, 2023 |
Identifiers:
| Web of science: | WOS:001075281700001 |
| Scopus: | 2-s2.0-85169781130 |
| Elibrary: | 56442941 |
| Chemical Abstracts: | 2023:1788915 |
| OpenAlex: | W4386171609 |