Articles producció científica> Enginyeria Química

Ni-Cu/Al2O3 from Layered Double Hydroxides Hydrogenates Furfural to Alcohols

  • Identification data

    Identifier: imarina:9258971
    Authors:
    Aldureid AMedina FPatience GSMontané D
    Abstract:
    The hydrogenation of furfural is an important process in the synthesis of bio-based chemicals. Copper-based catalysts favor the hydrogenation of furfural to alcohols. Catalytic activity and stability were higher at a Ni-to-Cu atomic ratio of 1:1 and 1.5:0.5 compared to 0.5:1.5. Here, we prepared Ni-Cu/Al2O3 hydrogenation catalysts derived from layered double hydroxides (LDHs). Catalysts calcined at 673 K and reduced at 773 K with nominal Ni/Cu atomic ratios y/x = 1.5/0.5, 1/1 and 0.5/1.5 were characterized by XRD, FESEM-EDX, H2-TPR, XPS, FAA and BET. Their activity was tested at 463 K and in a 0.05 g g−1 furfural solution in ethanol, and the space velocity in a packed-bed reactor (PBR) was 2.85 gFF gcat−1 h−1. In a slurry reactor (SSR) at 5 MPa H2 and a contact time of 4 h, conversion was complete, while it varied from 91 to 99% in the PBR. Tetrahydrofurfuryl alcohol (TFA) was the main product in the SSR, with a selectivity of 32%, 63% and 56% for Ni0.5Cu1.5Al1, Ni1Cu1Al1 and Ni1.5Cu0.5Al1, respectively. The main product in the atmospheric PBR was furfuryl alcohol (FA), with a selectivity of 57% (Ni0.5Cu1.5Al1), 61% (Ni1Cu1Al1) and 58% (Ni1.5Cu0.5Al1). Other products included furan, methylfuran, 1-butanol and 1,2-pentanediol. Ethyl tetrahydrofurfuryl ether and difurfuryl ether were also formed via the nucleophilic addition of furfural with ethanol and furfuryl alcohol.
  • Others:

    Author, as appears in the article.: Aldureid A; Medina F; Patience GS; Montané D
    Department: Enginyeria Química
    URV's Author/s: Aldureid Kadi Amin, Abdulaziz / Medina Cabello, Francisco / Montané Calaf, Daniel
    Keywords: Tetrahydrofurfuryl alcohol Layered double hydroxides (ldhs) Hydrotalcite-like precursors Furfuryl alcohol Furfural hydrogenation 1,2-pentanediol tetrahydrofurfuryl alcohol response factors platform molecules oxide catalysts nickel layered double hydroxides (ldhs) gas-chromatography furfuryl alcohol cyclopentanone cu conversion co2 hydrogenation 2-pentanediol 1
    Abstract: The hydrogenation of furfural is an important process in the synthesis of bio-based chemicals. Copper-based catalysts favor the hydrogenation of furfural to alcohols. Catalytic activity and stability were higher at a Ni-to-Cu atomic ratio of 1:1 and 1.5:0.5 compared to 0.5:1.5. Here, we prepared Ni-Cu/Al2O3 hydrogenation catalysts derived from layered double hydroxides (LDHs). Catalysts calcined at 673 K and reduced at 773 K with nominal Ni/Cu atomic ratios y/x = 1.5/0.5, 1/1 and 0.5/1.5 were characterized by XRD, FESEM-EDX, H2-TPR, XPS, FAA and BET. Their activity was tested at 463 K and in a 0.05 g g−1 furfural solution in ethanol, and the space velocity in a packed-bed reactor (PBR) was 2.85 gFF gcat−1 h−1. In a slurry reactor (SSR) at 5 MPa H2 and a contact time of 4 h, conversion was complete, while it varied from 91 to 99% in the PBR. Tetrahydrofurfuryl alcohol (TFA) was the main product in the SSR, with a selectivity of 32%, 63% and 56% for Ni0.5Cu1.5Al1, Ni1Cu1Al1 and Ni1.5Cu0.5Al1, respectively. The main product in the atmospheric PBR was furfuryl alcohol (FA), with a selectivity of 57% (Ni0.5Cu1.5Al1), 61% (Ni1Cu1Al1) and 58% (Ni1.5Cu0.5Al1). Other products included furan, methylfuran, 1-butanol and 1,2-pentanediol. Ethyl tetrahydrofurfuryl ether and difurfuryl ether were also formed via the nucleophilic addition of furfural with ethanol and furfuryl alcohol.
    Thematic Areas: Química Physical and theoretical chemistry Farmacia Environmental science (all) Engenharias ii Ciências biológicas ii Chemistry, physical Catalysis Astronomia / física
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: abdulaziz.aldureid@estudiants.urv.cat abdulaziz.aldureid@estudiants.urv.cat daniel.montane@urv.cat francesc.medina@urv.cat
    Author identifier: 0000-0002-5273-8870 0000-0002-3111-1542
    Record's date: 2024-09-07
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://www.mdpi.com/2073-4344/12/4/390
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Catalysts. 12 (4):
    APA: Aldureid A; Medina F; Patience GS; Montané D (2022). Ni-Cu/Al2O3 from Layered Double Hydroxides Hydrogenates Furfural to Alcohols. Catalysts, 12(4), -. DOI: 10.3390/catal12040390
    Article's DOI: 10.3390/catal12040390
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2022
    Publication Type: Journal Publications
  • Keywords:

    Catalysis,Chemistry, Physical,Physical and Theoretical Chemistry
    Tetrahydrofurfuryl alcohol
    Layered double hydroxides (ldhs)
    Hydrotalcite-like precursors
    Furfuryl alcohol
    Furfural hydrogenation
    1,2-pentanediol
    tetrahydrofurfuryl alcohol
    response factors
    platform molecules
    oxide catalysts
    nickel
    layered double hydroxides (ldhs)
    gas-chromatography
    furfuryl alcohol
    cyclopentanone
    cu
    conversion
    co2 hydrogenation
    2-pentanediol
    1
    Química
    Physical and theoretical chemistry
    Farmacia
    Environmental science (all)
    Engenharias ii
    Ciências biológicas ii
    Chemistry, physical
    Catalysis
    Astronomia / física
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