The reaction pathways of 5-hydroxymethylfurfural conversion in a continuous flow reactor using copper catalysts

Bao, Changchun; Li, Xin; Peng, Rui; Ye, Yuewen; Ye, Tongqi; Zhou, Rulong; Li, Dongdong; Carter, James; Hutchings, Graham J.

doi:10.1039/d1cy02197d

Cited by 14 publications

(6 citation statements)

References 55 publications

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“…It should be further noted that the high Pt loading of Co 1 Pt 0.050 Al catalyst and PtAl catalysts exhibited the yields of undesired products to 33.9 % and 44.6 %, respectively. This was due to the side reactions among the HMF and/or furan intermediates and alcohols by esterification and polymerization reactions [5,24,52,53] . Therefore, it could be emphasized that controlling the extent of reaction for selective BHMF or DMF product depended on not only the operating temperature but also the regulating the amount of Pt content on Co/Al 2 O 3 catalysts observed in our investigation.…”

Section: Resultsmentioning

confidence: 54%

Regulation of Pt Loading on Co/Al₂O₃ Catalysts for Selective Hydrogenation and Hydrogenolysis of 5‐Hydroxymethylfurfural to 2,5‐Bis(hydroxymethyl)furan and 2,5‐Dimethylfuran

Srifa,

Kalong,

Praikaew

et al. 2024

ChemCatChem

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Selective hydrogenation and hydrogenolysis of 5‐hydroxymethylfurfural (HMF) to 2,5‐bis(hydroxymethyl)furan (BHMF) and 2,5dimethylfuran (DMF) were explored by regulating the nanosized Pt on Co/Al2O3 catalysts. Characterization results revealed that the catalyst acidity was influenced by adjusting the Co/Pt composition, while the addition of more Pt loading on Co/Al2O3 catalysts resulted in a facilitation of H2 reduction process. Lower size of catalyst particles was obtained for the Co‐Pt system in comparison to the monometallic Co/Al2O3 catalyst. Additionally, the structural characterizations by XRD, XANES, and XPS established the co‐existences between metallic Pt0/Co0 and oxophilic PtO2/CoOx, acting as the active components for the reactions. Operated under a full HMF conversion, the Co1Pt0.050Al catalyst with high Pt loading gave >99.9% BHMF selectivity at 40 oC; whereas, an 86.7% of DMF selectivity was noticeable over low Pt loading of the Co1Pt0.013Al catalyst at 160 oC. This investigation evidenced that the selective production of BHMF or DMF towards hydro‐conversion of HMF was relied on the amount of Pt contents on Co/Al2O3 catalyst, in which the metal sizes and acidity had meaningful effects on the hydrogenation and hydrogenolysis processes.

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Section: Resultsmentioning

confidence: 54%

Regulation of Pt Loading on Co/Al₂O₃ Catalysts for Selective Hydrogenation and Hydrogenolysis of 5‐Hydroxymethylfurfural to 2,5‐Bis(hydroxymethyl)furan and 2,5‐Dimethylfuran

Srifa,

Kalong,

Praikaew

et al. 2024

ChemCatChem

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“…However, a lower selectivity was observed when using water. This is likely a result of the known instability of HMF in water, which yields byproducts …”

Section: Discussionmentioning

confidence: 99%

Oxygen Vacancy-Rich Amorphous Manganese Oxide for the Selective Oxidation of 5-Hydroxymethylfurfural

Posada,

Vil,

Perera

et al. 2024

ACS Appl. Eng. Mater.

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Metal oxides have been extensively pursued in many applications for their robustness, ease of preparation, and low cost. Within them, amorphous metal oxides exhibit characteristics that make them highly active in many catalytic applications due to their higher number of active sites, oxygen vacancies, and specific surface area compared to their crystalline counterparts. Herein, the selective oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-diformylfuran (DFF) at ambient pressure and an air atmosphere is carried out by amorphous manganese oxide (A-MnO X ). We demonstrate the superior catalytic activity of A-MnO X compared to other MnO 2 polymorphs and attribute the increase in conversion to the higher oxygen vacancy concentration and higher specific surface area. The A-MnO X was prepared via a facile inverse micelle, surfactant-based procedure, and was thoroughly characterized using powder X-ray diffraction (PXRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), hydrogen temperature-programmed reduction (H 2 -TPR), and N 2 -sorption. Catalytic activity increased in the order of β-MnO 2 < α-MnO 2 < γ-MnO 2 < A-MnO X , correlating to an increase in the specific surface area, as well as Mn 3+ presence arising from the lack of oxygen atoms (oxygen vacancies) requiring a charge balance. Thus, the catalytic activity can be linked to the presence of Mn 3+ .

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“…Cu-based catalysts could also convert HMF into DFF in a continuous fixed-bed reactor under air atmosphere. 64 Among these catalysts, Cu/ SiO 2 gave the highest DFF selectivity of 79.2% with more than 52.5% conversion of HMF. Table 1 lists some other catalysts for DFF formation from HMF.…”

Section: Oxidation Of Hmfmentioning

confidence: 97%

Chemical transformations of 5-hydroxymethylfurfural into highly added value products: present and future

et al. 2023

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The reaction pathways of 5-hydroxymethylfurfural conversion in a continuous flow reactor using copper catalysts

Abstract: The transformation of 5-hydroxymethylfurfural is investigated using supported and bulk copper oxide catalysts. We show that the selectivity to 5-methylfuraldehyde or 2,5-diformylfuran can be controlled by the solvent and the...

Cited by 14 publications

References 55 publications

Regulation of Pt Loading on Co/Al₂O₃ Catalysts for Selective Hydrogenation and Hydrogenolysis of 5‐Hydroxymethylfurfural to 2,5‐Bis(hydroxymethyl)furan and 2,5‐Dimethylfuran

Regulation of Pt Loading on Co/Al₂O₃ Catalysts for Selective Hydrogenation and Hydrogenolysis of 5‐Hydroxymethylfurfural to 2,5‐Bis(hydroxymethyl)furan and 2,5‐Dimethylfuran

Oxygen Vacancy-Rich Amorphous Manganese Oxide for the Selective Oxidation of 5-Hydroxymethylfurfural

Chemical transformations of 5-hydroxymethylfurfural into highly added value products: present and future

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The reaction pathways of 5-hydroxymethylfurfural conversion in a continuous flow reactor using copper catalysts

Abstract: The transformation of 5-hydroxymethylfurfural is investigated using supported and bulk copper oxide catalysts. We show that the selectivity to 5-methylfuraldehyde or 2,5-diformylfuran can be controlled by the solvent and the...

Cited by 14 publications

References 55 publications

Regulation of Pt Loading on Co/Al2O3 Catalysts for Selective Hydrogenation and Hydrogenolysis of 5‐Hydroxymethylfurfural to 2,5‐Bis(hydroxymethyl)furan and 2,5‐Dimethylfuran

Regulation of Pt Loading on Co/Al2O3 Catalysts for Selective Hydrogenation and Hydrogenolysis of 5‐Hydroxymethylfurfural to 2,5‐Bis(hydroxymethyl)furan and 2,5‐Dimethylfuran

Oxygen Vacancy-Rich Amorphous Manganese Oxide for the Selective Oxidation of 5-Hydroxymethylfurfural

Chemical transformations of 5-hydroxymethylfurfural into highly added value products: present and future

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Regulation of Pt Loading on Co/Al₂O₃ Catalysts for Selective Hydrogenation and Hydrogenolysis of 5‐Hydroxymethylfurfural to 2,5‐Bis(hydroxymethyl)furan and 2,5‐Dimethylfuran

Regulation of Pt Loading on Co/Al₂O₃ Catalysts for Selective Hydrogenation and Hydrogenolysis of 5‐Hydroxymethylfurfural to 2,5‐Bis(hydroxymethyl)furan and 2,5‐Dimethylfuran