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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10403 - Physical chemistry

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

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

Name of the periodical

Applied Catalysis A - General

ISSN

0926-860X

e-ISSN

—

Volume of the periodical

567

Issue of the periodical within the volume

SI

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

10

Pages from-to

112-121

UT code for WoS article

000449125000013

EID of the result in the Scopus database

2-s2.0-85053823666