Low temperature synthesis of Ru–Cu alloy nanoparticles with the compositions in the miscibility gap

Journal Article · Tue Apr 01 00:00:00 EDT 2014 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/J.JSSC.2014.01.008· OSTI ID:22334162

Martynova, S. A. ^[1]; Korenev, S. V.; Kuratieva, N. V. ^[1]; Sheludyakova, L. A. ^[1]; Plusnin, P. E.; Shubin, Yu. V. ^[1]; Slavinskaya, E. M. ^[2]; Boronin, A. I. ^[2]

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1. Nicolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090 (Russian Federation)
2. Boreskov Institute of Catalysis SB RAS, Novosibirsk 630090 (Russian Federation)

A complex salt [Ru(NH{sub 3}){sub 5}Cl][Cu(C{sub 2}O{sub 4}){sub 2}H{sub 2}O]—the precursor of nanoalloys combining ruthenium and copper was prepared. It crystallizes in the monoclinic space group P2{sub 1}/n. Thermal properties of the prepared salt were examined in different atmospheres (helium, hydrogen, oxygen). Thermal decomposition of the precursor in inert atmosphere was thoroughly examined and the intermediate products were characterized. Experimental conditions for preparation of copper-rich (up to 12 at% of copper) metastable solid solution Cu{sub x}Ru{sub 1−x} (based on Ru structure) were optimized, what is in sharp contrast to the bimetallic miscibility gap known for the bulk counterparts in a wide composition range. Catalytic properties of copper–ruthenium oxide composite were tested in catalytic oxidation of CO. - Highlights: • We synthesized new precursor of CuRu metastable nanoalloys. • Thermal properties of the prepared salt were examined in different atmospheres. • Thermodestruction mechanism of precursor are studied. • Cu{sub 0.12}Ru{sub 0.88} nanoalloy with the compositions in the miscibility gap is obtained. • Catalytic conversion of CO on copper–ruthenium oxide composite were examined.

• OSTI ID: 22334162
• Journal Information: Journal of Solid State Chemistry, Vol. 212; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
77 NANOSCIENCE AND NANOTECHNOLOGY
ALLOYS
AMMONIA
MONOCLINIC LATTICES
NANOPARTICLES
OXIDATION
RUTHENIUM
RUTHENIUM OXIDES
SOLID SOLUTIONS
SOLUBILITY
SPACE GROUPS
SYNTHESIS
THERMODYNAMIC PROPERTIES