Abstract
Three new double complex salts (DCSs) containing [Pt(NO3)6]2- anion and Rh(III) metalorganic cations [Rh(4-pic)4Cl2]2[Pt(NO3)6] (1,4-pic = 4-methylpyridine), [Rh(bpy)3]2[Pt(NO3)6]3 (2, bpy = 2,2′-bipyridiine) and [Rh(bpy)3][Pt(NO3)6](NO3)(CH3COCH3)(CH3CN)(H2O) (3) were prepared and characterised by elemental analysis and infrared spectroscopy. Crystal structures of 1 and 3 were determined using X-ray single crystal analysis. Thermal decomposition of salts 1 and 2 in various atmospheres (He, He/H2, air) was shown to yield Rh–Pt solid solutions with a Rh:Pt ratio inherited from the starting salt composition. The Rh0·67Pt0·33/CeO2 catalyst was prepared by thermal decomposition of salt 1 supported on a CeO2 surface. The catalyst was tested in a CO oxidation reaction and demonstrated full conversion of CO from about 145 °C at gas hourly space velocity of 200 000 ml g−1 h−1.
Original language | English |
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Article number | 128108 |
Number of pages | 9 |
Journal | Journal of Molecular Structure |
Volume | 1211 |
DOIs | |
Publication status | Published - 5 Jul 2020 |
Keywords
- CO oxidation
- Complex salts
- Platinum
- Rhodium
- Solid solutions
- Thermal decomposition
- OXIDATION
- PERFORMANCE
- SINGLE-SOURCE PRECURSORS
- CRYSTAL-STRUCTURES
- CO
- THERMAL-DECOMPOSITION
- RH
- METAL
- NANOALLOYS
- PLATINUM(IV)