Facile Thermodynamically Controlled Synthesis of Intermetallic Zn1-xPdx/Al2O3 and Its Methanol Steam Reforming Properties

0585508 - ÚFM 2025 RIV US eng J - Článek v odborném periodiku
Wibner, P. - Kriegel, R. - Garstenauer, D. - Zobač, Ondřej - Kuběna, Ivo - Rösch, N. - Seyller, T. - Armbrüster, M. - Richter, K.W.
Facile Thermodynamically Controlled Synthesis of Intermetallic Zn1-xPdx/Al2O3 and Its Methanol Steam Reforming Properties.
Journal of Physical Chemistry C. Roč. 128, č. 16 (2024), s. 6906-6916. ISSN 1932-7447. E-ISSN 1932-7455
Grant CEP: GA MŠMT(CZ) 8J23AT006
Institucionální podpora: RVO:68081723
Klíčová slova: CO2 selectivity * compound znpd * nanocrystals * catalyst * vapor
Obor OECD: Physical chemistry
Impakt faktor: 3.7, rok: 2022
Způsob publikování: Open access
https://pubs.acs.org/doi/10.1021/acs.jpcc.4c00609

High-performance heterogeneous catalytic materials are most frequently based on supported nanoparticles to gain high dispersion and thus high atom efficiency. The materials are usually obtained by kinetically controlled synthesis, making repetitive synthesis of materials with identical properties a challenge. While this holds for monometallic-supported particles, the situation is even more severe with binary-supported substitutional alloys or intermetallic compounds, where control of the homogeneous elemental composition of the nanoparticles comes close to an art. We propose an innovative synthesis route to Zn1-xPdx/Al2O3, controlling thermodynamically the composition and homogeneity of the Zn1-xPdx particles & horbar, an intermetallic compound having a significant homogeneity range and catalyzing numerous reactions. The thermodynamic control is achieved by the direct reaction of supported palladium nanoparticles with gaseous zinc. The resulting Zn1-xPdx/Al2O3 samples are characterized in detail concerning their particle composition, particle size distribution, and crystal structure of the intermetallic nanoparticles, using XRD, TEM, XPS, ICP-MS and ICP-OES. Subsequent testing in methanol steam reforming reveals excellent catalytic properties.
Trvalý link: https://hdl.handle.net/11104/0353208