From Alumina Modified Rh/Ce0.75Zr0.25O2-δ Catalyst Towards Composite Rh/Ce0.75Zr0.25O2-δ-ƞ-Al2O3/FeCrAl Catalytic System for Diesel Conversion to Syngas Full article
| Journal |
Applied Catalysis B: Environmental
ISSN: 0926-3373 , E-ISSN: 1873-3883 |
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| Output data | Year: 2019, Volume: 245, Pages: 40-48 Pages count : 9 DOI: 10.1016/j.apcatb.2018.12.037 | ||||||
| Tags | Steam conversion; Autothermal reforming; Diesel; Hexadecane; Rhodium; Alumina; Ceria-zirconia; Structured catalyst; Hydrogen-rich stream; Syngas; Wire metal mesh | ||||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Federal Agency for Scientific Organizations | 0303-2016-0011 |
Abstract:
It was investigated how the modification of Ce1-xZrxO2–δ with alumina as structural additive affected the surface characteristics of the support. The effect of alkaline promoters on the catalyst coking resistance and activity was studied. Sorption-hydrolytic deposition technique was used to prepare a set of catalysts containing 1 wt.% Rh deposited on Al2O3 - Ce0.75Zr0.25O2-δ, Ce0.75Zr0.25O2-δ and
Al2O3 - Ce0.75Zr0.25O2-δ, doped with alkaline metal. The catalysts were characterized by BET, TEM, SEM, XRD, TPO, and CO chemisorption methods. It was proved that the catalysts contained high-dispersion Rh particles of size 1–2 nm. The presence of Al deteriorated catalytic activity of Rh/ Al2O3 - Ce0.75Zr0.25O2-δ for steam reforming of diesel surrogate (n-hexadecane) at T = 550 °C, H2O/C = 3.0, GHSV = 20,000 h−1, whereas the alkaline additives promoted n-hexadecane steam reforming. Rh/Ce0.75Zr0.25O2-δ appeared to be the most stable catalyst, as it provided 100% conversion of n-hexadecane during 15 h on stream. The active component Rh/Ce0.75Zr0.25O2-δ was supported on FeCrAl alloy wire mesh using alumina as a binding structural component. The obtained catalyst Rh/Ce0.75Zr0.25O2-δ-ƞ-Al2O3/FeCrAl was tested in the autothermal reforming of n-hexadecane at various temperatures and gas flow rates. Operating conditions were found to provide a 100% conversion of n-hexadecane and stable catalyst activity.
Cite:
Shoynkhorova T.B.
, Snytnikov P.V.
, Simonov P.A.
, Potemkin D.I.
, Rogozhnikov V.N.
, Gerasimov E.Y.
, Salanov A.N.
, Belyaev V.D.
, Sobyanin V.A.
From Alumina Modified Rh/Ce0.75Zr0.25O2-δ Catalyst Towards Composite Rh/Ce0.75Zr0.25O2-δ-ƞ-Al2O3/FeCrAl Catalytic System for Diesel Conversion to Syngas
Applied Catalysis B: Environmental. 2019. V.245. P.40-48. DOI: 10.1016/j.apcatb.2018.12.037 WOS Scopus РИНЦ ANCAN OpenAlex
From Alumina Modified Rh/Ce0.75Zr0.25O2-δ Catalyst Towards Composite Rh/Ce0.75Zr0.25O2-δ-ƞ-Al2O3/FeCrAl Catalytic System for Diesel Conversion to Syngas
Applied Catalysis B: Environmental. 2019. V.245. P.40-48. DOI: 10.1016/j.apcatb.2018.12.037 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Aug 1, 2018 |
| Accepted: | Dec 14, 2018 |
| Published online: | Dec 15, 2018 |
| Published print: | May 15, 2019 |
Identifiers:
| Web of science: | WOS:000467661700005 |
| Scopus: | 2-s2.0-85058807386 |
| Elibrary: | 38629319 |
| Chemical Abstracts: | 2018:2584941 |
| Chemical Abstracts (print): | 170:209789 |
| OpenAlex: | W2904884612 |