Surface characterization of LaMnO{sub 3+{delta}} powder synthesized using poly(acrylic acid)

Journal Article · Mon May 01 00:00:00 EDT 1995 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1006/jssc.1995.1224· OSTI ID:146479

Taguchi, Hideki; Yoshioka, Hideaki; Nagao, Mahiko ^[1]

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1. Okayama Univ. (Japan)

The La/Mn ratio, specific surface area, and catalytic activity for CO oxidation on perovskite-type LaMnO{sub 3+{delta}} synthesized by firing gels with poly(acrylic acid) (PAA) were measured to characterize the LaMnO{sub 3+{delta}} surface. LaMnO{sub 3+{delta}} synthesized by gel firing with low PAA concentration had a large specific surface area, but a Mn ion content lower than that of LaMnO{sub 3+{delta}} synthesized using acetates. Increasing the PAA concentration or the firing temperature improved the surface state of LaMnO{sub 3+{delta}}. At 5 x 10{sup -2}M PAA, the catalytic activity was better than that of LaMnO{sub 3+{delta}} synthesized using acetates.

• Sponsoring Organization: USDOE
• OSTI ID: 146479
• Journal Information: Journal of Solid State Chemistry, Vol. 116, Issue 2; Other Information: PBD: May 1995
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
40 CHEMISTRY
01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
33 ADVANCED PROPULSION SYSTEMS
LANTHANUM COMPOUNDS
CATALYTIC EFFECTS
SURFACE PROPERTIES
MANGANATES
CARBON MONOXIDE
OXIDATION
STOICHIOMETRY
CHEMICAL PREPARATION
SPECIFIC SURFACE AREA