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Abstract:
A one-pot redox deposition method is described to prepare silica-supported bimetallic NiPt and CuPt catalysts using differences in standard reduction potentials. The synthesis involved the initial reduction of non-noble metal ions (Ni2+ and Cu2+) by NaBH4, followed by reduction of Pt ions by these reduced metals. Alloy formation and phase purity were established by X-ray diffraction (XRD), bulk composition by X-ray fluorescence (XRF), and surface composition by X-ray photoelectron spectroscopy (XPS). Alloy formation was enhanced by increase in the amount of base metals available to reduce Pt, or through the use of excess NaBH4 after redox deposition. The catalysts were evaluated for methane oxidation at 300-400 degrees C and atmospheric pressure. Reference samples prepared using the incipient wetness impregnation (IW) method had inferior performance and characteristics. The redox deposition method provides a simple and versatile protocol for the preparation of bimetallic alloys between noble metals and base metals.
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APPLIED CATALYSIS A-GENERAL
ISSN: 0926-860X
Year: 2020
Volume: 591
5 . 7 0 6
JCR@2020
4 . 7 0 0
JCR@2023
ESI Discipline: CHEMISTRY;
ESI HC Threshold:160
JCR Journal Grade:1
CAS Journal Grade:2
Cited Count:
WoS CC Cited Count: 15
SCOPUS Cited Count: 15
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 2
Affiliated Colleges: