Well-crystallized mesoporous samaria-doped ceria from EDTA-citrate complexing process with in situ created NiO as recyclable template
|dc.identifier.citation||Ran, R. and Guo, Y. and Zheng, Y. and Wang, K. and Shao, Z. 2010. Well-crystallized mesoporous samaria-doped ceria from EDTA-citrate complexing process with in situ created NiO as recyclable template. Journal of Alloys and Compounds. 491 (1-2): pp. 271-277.|
A facile EDTA-citrate complexing process with in situ created recyclable NiO as inorganic template was developed for the synthesis of mesoporous samaria-doped ceria (SDC) at high temperatures. By applying metal nitrates as the raw materials for the cation sources and EDTA and citric acid as the chelants, the molecular-level homogeneous mixing of the metal ions was successfully preserved to the solid precursor. Low-temperature calcination resulted in the formation of mixture oxides of nano-size SDC and NiO oxides, as demonstrated by XRD, FT-IR and BET analysis. A possible mechanism for the formation of mesoporous SDC was proposed, in which the SDC particles surrounded the nano-size NiO grains and sintered during the high-temperature calcination. Dissolving the coated NiO in SDC and self-aggregated NiO particulates from the mixture with diluted HNO3 resulted in a porous pure-phase SDC oxide. At optimal SDC to NiO ratios, mesoporous, thermally stable and well-crystallized SDC powder with narrow pore size distribution and high surface area was synthesized. © 2009 Elsevier B.V. All rights reserved.
|dc.title||Well-crystallized mesoporous samaria-doped ceria from EDTA-citrate complexing process with in situ created NiO as recyclable template|
|dcterms.source.title||Journal of Alloys and Compounds|
|curtin.department||Department of Chemical Engineering|
|curtin.accessStatus||Fulltext not available|
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