Abstract
Heterometal alkoxides are used as single-source precursors to obtain nanoscaled thin layers and powders of a variety of oxide ceramics and composites. The hydride alkoxide [MgH 2Al(OBu') 2 2] has been used for low-temperature deposits of crystalline MgAl 2O 4 spinel. The mixed-metal alkoxide [BaZr(OPr i) 5(OH)(Pr iOH) 3] 2, based on 1:1 stoichiometry of the metals, has been used for clean and selective synthesis (sol-gel) of nanocrystalline BaZrO 3 ceramic. Using heterometal alkoxide [Ni 2Sn 2(OBu t) 8] in a CVD process gave a binary intermetallic compound (Ni 3Sn 4) in an oxide matrix (SnO 2). The composite system Ni/Al 2O 3 obtained on reducing NiO with [H 2Al(OBu t)] 2 shows remarkably high catalytic activity in hydrogenation of C-C double bonds. Thin layers of a composite containing nano-sized Ni/Al 2O 3 have been deposited using [NiAl(OPr i) 4 2] in a CVD process.
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