Ultra-Fine Spherical Particles of γ-Alumina: Electron Microscopy of Crystal Structure and Surface Morphology at Atomic Resolution

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概要

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• The γ-alumina particles are produced by a dry method developed by the author. Three types of structures, tentatively called δ' (orthorhombic; Pmn2_1; a=8.2, b=16.4, c=11.8Å), θ_1 (monoclinic; B2/b; a=11.1, b=12.1, c=17.7Å, β=103°) and θ_2 (monoclinic, B2/m; a=11.1, b=12.1, c=2.9 Å, β=103°) are found. The particle is spherical but facetted with flat {111} and {100} surfaces; {110} surfaces consist of many small {111} facets. As a new approach to ceramics and catalysis research, surface morphology of a neck portion of two coalescing particles, and clusters of Rh_6(CO)_<16> impregnated on the particles are demonstrated for the first time.

• 社団法人応用物理学会の論文
• 1984-06-20

著者

• Iijima Sumio

  Research And Development Group Nec Corporation

• IIJIMA Sumio

  Research Development Corporation of Japan, c

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• Ultra-Fine Spherical Particles of γ-Alumina: Electron Microscopy of Crystal Structure and Surface Morphology at Atomic Resolution

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