www.cheminform.wiley-vch.de

CatalystsH 2000 Hexagonal YFe1-xPdxO3-δ: Nonperovskite Host Compounds for Pd2+ and Their

Catalytic Activity for CO Oxidation. — YFeO3 and the Pd-substituted title com-pounds (0 < x ≤ 0.1) are synthesized by a sol—gel process from appropriate mixtures of Y(NO3)3, Fe(NO3)3, Pd(OAc)2, and aqueous citric acid followed by calcination in air at 700—850 °C for 10 h. The samples are characterized by powder X-ray and neutron diffraction, XPS, and SEM. The crystal structure of the compounds is described in the space group P63/mmc. The Pd2+-containing materials show significant low-temperature (near 100 °C) catalytic activity for CO oxidation, comparable to that of highly dis-persed PdO/Al2O3, despite their relatively low surface areas. — (LI, J.; SINGH, U. G.; SCHLADT, T. D.; STALICK, J. K.; SCOTT*, S. L.; SESHADRI, R.; Chem. Mater. 20 (2008) 20, 6567-6576; Dep. Chem. Eng., Univ. Calif., Santa Barbara, CA 93106, USA; Eng.) — W. Pewestorf

03- 012

ChemInform 2009, 40, issue 01 © 2008 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim