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Aqueous-phase reforming of Fischer-Tropsch alcohols over nickel-based catalysts to produce hydrogen: Product distribution and reaction pathways

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F18%3A00506517" target="_blank" >RIV/61388955:_____/18:00506517 - isvavai.cz</a>

  • Výsledek na webu

    <a href="http://hdl.handle.net/11104/0297750" target="_blank" >http://hdl.handle.net/11104/0297750</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.apcata.2018.09.013" target="_blank" >10.1016/j.apcata.2018.09.013</a>

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Aqueous-phase reforming of Fischer-Tropsch alcohols over nickel-based catalysts to produce hydrogen: Product distribution and reaction pathways

  • Popis výsledku v původním jazyce

    Catalytic aqueous-phase reforming (APR) can be applied to process the organic compounds in the water fractions derived from the Fischer-Tropsch (FT) synthesis. This work aimed at finding an active nickel-based catalyst to convert organic compounds typically found in FT-derived waters, such as alcohols, into hydrogen. In addition, this work aimed at proposing potential reaction pathways that explain the product distribution resulting from the APR of C-1-C-3 alcohols. Solutions with 5% mass fraction of either methanol, ethanol, propan-l-ol or propan-2-ol in water were processed in APR at 230 degrees C and 3.2 MPa over different nickel-based catalysts in a continuous packed-bed reactor. Methanol was successfully reformed into hydrogen and carbon monoxide with conversions up to 60%. The conversion of C-2-C-3 alcohols achieved values in the range of 12% to 55%. The results obtained in the APR of C-2-C-3 alcohols suggest that in addition to reforming to hydrogen and carbon monoxide, the alcohols underwent dehydrogenation and decarbonylation. The most stable catalyst, nickel-copper supported on ceriazirconia, reached feedstock conversions between 20% and 60% and high hydrogen selectivity. Monometallic nickel supported on ceria-zirconia catalysts reached higher H-2 yields. However, the yield of side products, such as alkanes, was also higher over the monometallic catalysts. Accordingly, ceria-zirconia nickel-based supported catalysts constitute suitable candidates to process the alcohols in the water fractions derived from the FT synthesis.

  • Název v anglickém jazyce

    Aqueous-phase reforming of Fischer-Tropsch alcohols over nickel-based catalysts to produce hydrogen: Product distribution and reaction pathways

  • Popis výsledku anglicky

    Catalytic aqueous-phase reforming (APR) can be applied to process the organic compounds in the water fractions derived from the Fischer-Tropsch (FT) synthesis. This work aimed at finding an active nickel-based catalyst to convert organic compounds typically found in FT-derived waters, such as alcohols, into hydrogen. In addition, this work aimed at proposing potential reaction pathways that explain the product distribution resulting from the APR of C-1-C-3 alcohols. Solutions with 5% mass fraction of either methanol, ethanol, propan-l-ol or propan-2-ol in water were processed in APR at 230 degrees C and 3.2 MPa over different nickel-based catalysts in a continuous packed-bed reactor. Methanol was successfully reformed into hydrogen and carbon monoxide with conversions up to 60%. The conversion of C-2-C-3 alcohols achieved values in the range of 12% to 55%. The results obtained in the APR of C-2-C-3 alcohols suggest that in addition to reforming to hydrogen and carbon monoxide, the alcohols underwent dehydrogenation and decarbonylation. The most stable catalyst, nickel-copper supported on ceriazirconia, reached feedstock conversions between 20% and 60% and high hydrogen selectivity. Monometallic nickel supported on ceria-zirconia catalysts reached higher H-2 yields. However, the yield of side products, such as alkanes, was also higher over the monometallic catalysts. Accordingly, ceria-zirconia nickel-based supported catalysts constitute suitable candidates to process the alcohols in the water fractions derived from the FT synthesis.

Klasifikace

  • Druh

    J<sub>imp</sub> - Článek v periodiku v databázi Web of Science

  • CEP obor

  • OECD FORD obor

    10403 - Physical chemistry

Návaznosti výsledku

  • Projekt

  • Návaznosti

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Ostatní

  • Rok uplatnění

    2018

  • Kód důvěrnosti údajů

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Údaje specifické pro druh výsledku

  • Název periodika

    Applied Catalysis A - General

  • ISSN

    0926-860X

  • e-ISSN

  • Svazek periodika

    567

  • Číslo periodika v rámci svazku

    SI

  • Stát vydavatele periodika

    NL - Nizozemsko

  • Počet stran výsledku

    10

  • Strana od-do

    112-121

  • Kód UT WoS článku

    000449125000013

  • EID výsledku v databázi Scopus

    2-s2.0-85053823666