skip to main content

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

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.
Authors:
 [1] ;  [1] ;  [2] ; ;  [1] ;  [2] ;  [1] ; ;  [1] ;  [2] ;  [3] ;  [3] ;  [2]
  1. Nicolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090 (Russian Federation)
  2. (Russian Federation)
  3. Boreskov Institute of Catalysis SB RAS, Novosibirsk 630090 (Russian Federation)
Publication Date:
OSTI Identifier:
22334162
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 212; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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