| Budget Amount *help |
¥28,210,000 (Direct Cost: ¥21,700,000、Indirect Cost: ¥6,510,000)
Fiscal Year 2011: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2010: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2009: ¥20,410,000 (Direct Cost: ¥15,700,000、Indirect Cost: ¥4,710,000)
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| Research Abstract |
A liquid-phase method for preparing uniform-sized silica nanospheres(SNSs) 12 nm in size and their three-dimensionally ordered arrangement upon solvent evaporation have recently been pioneered by us. Firts, the successful control of the sphere sizes in the wide range from 14 to 550 nm has been achieved by the seed regrowth method. The confined space synthesis method using the colloidar array of silica nanospheres has been applied to the preparation of sodium tantalate(NaTaO_3); hydrothermal reaction of NaOH and Ta_2O_5 was carried out in the pores of three-dimensional mesoporous carbon, which was replicated by the colloidal array of silica nanospheres(SNSs) 20 nm in size. Trimethylsilylated Ti-containing mesoporous silica nanospheres(Ti-MSNSs) have been successfully prepared. The trimethylsilylation improved a hydrophobicity of the material with its morphology and the coordination of Ti species intact. Thus prepared trimethylsilylated Ti-MSNSs exhibited a higher catalytic performance in the epoxidations of various bulky olefins
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