Ni-containing CeO$_2$ rods for dry reforming of methane : activity tests and a multiscale lattice Boltzmann model analysis in two model geometries
ID Strniša, Filip (Author), ID Sagar, Vikram Tatiparthi (Author), ID Djinović, Petar (Author), ID Pintar, Albin (Author), ID Plazl, Igor (Author)

.pdfPDF - Presentation file, Download (4,47 MB)
MD5: D3D1309D01A1EED49896A4365A0EDD25
URLURL - Source URL, Visit https://www.sciencedirect.com/science/article/pii/S1385894720336196 This link opens in a new window

Experimental and theoretical modeling on low-temperature dry methane reforming over Ni-containing CeO$_2$ rods was studied. The catalyst was characterized by means of N$_2$ physisorption, in-situ XRD, TPR and H$_2$ chemisorption techniques. The characterization studies revealed the distortion of CeO$_2$ flourite structure due to the Ni incorporation. Lattice expansion (due to reduction) and contraction (due to oxidation) suggest the reversible redox nature of CeO$_2$. Ni–O–Ce solid solution formation was evidenced by both XRD and TPR studies. H$_2$ chemisorption study revealed that the catalyst reduction temperature plays a significant role in Ni dispersion. The catalyst showed similar activity trends in two model geometries: a between-two-plates microchannel fixed-bed reactor and a conventional fixed-bed reactor. The activity tests were conducted in the kinetic regime, where conversions of CH$_4$ were not influenced with the gas flow rate. A lattice Boltzmann model for mixed gas flow was developed along with a boundary condition for catalytic sites. The lattice Boltzmann model was used in a multiscale simulation of the studied reaction systems and produced data that qualitatively matched the experiments.

Keywords:dry reforming of methane, nickel-cerium(IV) oxide rods, lattice Boltzmann method, multiscale modeling, Ni–CeO$_2$ rods
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FKKT - Faculty of Chemistry and Chemical Technology
Publication status:Published
Publication version:Version of Record
Number of pages:13 str.
Numbering:Vol. 413, art. 127498
PID:20.500.12556/RUL-127096 This link opens in a new window
ISSN on article:1385-8947
DOI:10.1016/j.cej.2020.127498 This link opens in a new window
COBISS.SI-ID:34724867 This link opens in a new window
Publication date in RUL:17.05.2021
Copy citation
Share:Bookmark and Share

Record is a part of a journal

Title:Chemical engineering journal
Shortened title:Chem. eng. j.
COBISS.SI-ID:2110998 This link opens in a new window


License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.

Secondary language

Keywords:suhi reforming metana, nikelj-cerijev(IV) oksid, delci, lattice Boltzmanova metoda, večnivojsko modeliranje


Funder:ARRS - Slovenian Research Agency
Funding programme:Young researchers

Funder:ARRS - Slovenian Research Agency
Project number:P2-0150
Name:Integralni pristop k preprečevanju onesnaževanja voda

Funder:ARRS - Slovenian Research Agency
Project number:P2-0191
Name:Kemijsko inženirstvo

Funder:ARRS - Slovenian Research Agency
Project number:J7-1816
Name:Krožna sinteza trajnostnih (bio)kemijskih procesov na osnovi obnovljivih virov

Funder:ARRS - Slovenian Research Agency
Project number:N2-0067
Name:Večstopenjska sinteza z MIO-encimi v kontinuirnem mikroreaktorskem sistemu

Funder:EC - European Commission
Funding programme:H2020
Project number:811040
Name:Chair Of Micro Process Engineering and TEchnology

Similar documents

Similar works from RUL:
Similar works from other Slovenian collections: