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A Study of the Influence of Composition on the Microstructural Properties of ZnO/Al 2 O 3 Mixed Oxides
Author(s) -
Miao Shaojun,
d'Alcourt Raoul Naumann,
Reinecke Thomas,
Kasatkin Igor,
Behrens Malte,
Schlögl Robert,
Muhler Martin
Publication year - 2009
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200800987
Subject(s) - calcination , chemistry , zinc , coprecipitation , spinel , thermogravimetric analysis , oxide , mixed oxide , transmission electron microscopy , magic angle spinning , inorganic chemistry , analytical chemistry (journal) , crystallography , chemical engineering , metallurgy , nuclear magnetic resonance spectroscopy , materials science , catalysis , stereochemistry , organic chemistry , engineering
A series of ZnO/Al 2 O 3 mixed oxide samples with varyingZn/Al ratio is prepared by coprecipitation, ageing, drying, and calcination. Samples are investigated in the state after drying and calcination. The applied methods include X‐ray diffraction, solid‐state 27 Al magic‐angle spinning nuclear magnetic resonance spectroscopy, transmission electron microscopy and thermogravimetric experiments coupled with evolved gas analysis. Phases present in the dried precursor samples include hydrozincite, zaccagnaite, and an unknown phase. After calcination zinc oxide and spinel can be found. All results indicate the substitution of Al ions for Zn ions in zinc oxide of zinc‐rich samples. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)