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Mixed valent perovskites Ba/sub 3/B/sup 3 +/Ru/sub 2/sup(4. 5+)O/sub 9/. Catalytic activity of perovskite oxides with noble metals

Abstract

The black compounds Ba/sub 3/B/sup 3 +/Ru/sub 2/O/sub 9/ crystallize with B/sup 3 +/ = La, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, and Y in a hexagonal BaTiO/sub 3/ structure (6L, sequence (hcc)/sub 2/) with an ordered distribution (1:2 order) of B/sup 3 +/ and ruthenium (BO/sub 6/ single octahedra; Ru/sub 2/O/sub 9/ double groups). The mean oxidation state of ruthenium is about +4.5. The properties are compared with those of other isotypic stacking polytypes Ba/sub 3/B/sup 3 +/M/sub 2/sup(4.5)O/sub 9/ (M/sub 2/ = IrRu, Ir/sub 2/, PtRu) and Ba/sub 3/B/sup 2 +/M/sub 2//sup 5 +/O/sub 9/ (M = Ru, Ir). The results of activity tests concerning the efficiency of perovskite oxides with noble metals in respect of the oxidation of CO or CHsub(x) and the reduction of NOsub(x) are reported.
Authors:
Treiber, U; Kemmler-Sack, S; Ehmann, A; Schaller, H U; Duerrschmidt, E; Thumm, I; Bader, H [1] 
  1. Tuebingen Univ. (Germany, F.R.). Lehrstuhl fuer Anorganische Chemie 2
Publication Date:
Oct 01, 1981
Product Type:
Journal Article
Reference Number:
AIX-13-671050; EDB-82-103950
Resource Relation:
Journal Name: Z. Anorg. Allg. Chem.; (German Democratic Republic); Journal Volume: 481
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; DYSPROSIUM OXIDES; CATALYTIC EFFECTS; LATTICE PARAMETERS; ERBIUM OXIDES; EUROPIUM OXIDES; GADOLINIUM OXIDES; HOLMIUM OXIDES; LANTHANUM OXIDES; NEODYMIUM OXIDES; RUTHENIUM OXIDES; SAMARIUM OXIDES; THULIUM OXIDES; YTTERBIUM OXIDES; YTTRIUM OXIDES; BARIUM OXIDES; CARBON MONOXIDE; CATALYSTS; CHEMICAL PREPARATION; DENSITY; EXPERIMENTAL DATA; HEXAGONAL LATTICES; INFRARED SPECTRA; NITROGEN OXIDES; ORGANIC COMPOUNDS; OXIDATION; SPACE GROUPS; X-RAY DIFFRACTION; ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; CHEMICAL REACTIONS; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DATA; DIFFRACTION; DYSPROSIUM COMPOUNDS; ERBIUM COMPOUNDS; EUROPIUM COMPOUNDS; GADOLINIUM COMPOUNDS; HOLMIUM COMPOUNDS; INFORMATION; LANTHANUM COMPOUNDS; NEODYMIUM COMPOUNDS; NITROGEN COMPOUNDS; NUMERICAL DATA; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; RUTHENIUM COMPOUNDS; SAMARIUM COMPOUNDS; SCATTERING; SPECTRA; SYNTHESIS; THULIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; YTTERBIUM COMPOUNDS; YTTRIUM COMPOUNDS; 400201* - Chemical & Physicochemical Properties
OSTI ID:
5471960
Country of Origin:
Germany
Language:
German
Other Identifying Numbers:
Journal ID: CODEN: ZAACA
Submitting Site:
HEDB
Size:
Pages: 143-152
Announcement Date:

Citation Formats

Treiber, U, Kemmler-Sack, S, Ehmann, A, Schaller, H U, Duerrschmidt, E, Thumm, I, and Bader, H. Mixed valent perovskites Ba/sub 3/B/sup 3 +/Ru/sub 2/sup(4. 5+)O/sub 9/. Catalytic activity of perovskite oxides with noble metals. Germany: N. p., 1981. Web. doi:10.1002/zaac.19814811016.
Treiber, U, Kemmler-Sack, S, Ehmann, A, Schaller, H U, Duerrschmidt, E, Thumm, I, & Bader, H. Mixed valent perovskites Ba/sub 3/B/sup 3 +/Ru/sub 2/sup(4. 5+)O/sub 9/. Catalytic activity of perovskite oxides with noble metals. Germany. doi:10.1002/zaac.19814811016.
Treiber, U, Kemmler-Sack, S, Ehmann, A, Schaller, H U, Duerrschmidt, E, Thumm, I, and Bader, H. 1981. "Mixed valent perovskites Ba/sub 3/B/sup 3 +/Ru/sub 2/sup(4. 5+)O/sub 9/. Catalytic activity of perovskite oxides with noble metals." Germany. doi:10.1002/zaac.19814811016. https://www.osti.gov/servlets/purl/10.1002/zaac.19814811016.
@misc{etde_5471960,
title = {Mixed valent perovskites Ba/sub 3/B/sup 3 +/Ru/sub 2/sup(4. 5+)O/sub 9/. Catalytic activity of perovskite oxides with noble metals}
author = {Treiber, U, Kemmler-Sack, S, Ehmann, A, Schaller, H U, Duerrschmidt, E, Thumm, I, and Bader, H}
abstractNote = {The black compounds Ba/sub 3/B/sup 3 +/Ru/sub 2/O/sub 9/ crystallize with B/sup 3 +/ = La, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, and Y in a hexagonal BaTiO/sub 3/ structure (6L, sequence (hcc)/sub 2/) with an ordered distribution (1:2 order) of B/sup 3 +/ and ruthenium (BO/sub 6/ single octahedra; Ru/sub 2/O/sub 9/ double groups). The mean oxidation state of ruthenium is about +4.5. The properties are compared with those of other isotypic stacking polytypes Ba/sub 3/B/sup 3 +/M/sub 2/sup(4.5)O/sub 9/ (M/sub 2/ = IrRu, Ir/sub 2/, PtRu) and Ba/sub 3/B/sup 2 +/M/sub 2//sup 5 +/O/sub 9/ (M = Ru, Ir). The results of activity tests concerning the efficiency of perovskite oxides with noble metals in respect of the oxidation of CO or CHsub(x) and the reduction of NOsub(x) are reported.}
doi = {10.1002/zaac.19814811016}
journal = {Z. Anorg. Allg. Chem.; (German Democratic Republic)}
volume = {481}
journal type = {AC}
place = {Germany}
year = {1981}
month = {Oct}
}