| Budget Amount *help |
¥19,760,000 (Direct Cost: ¥15,200,000、Indirect Cost: ¥4,560,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2012: ¥14,170,000 (Direct Cost: ¥10,900,000、Indirect Cost: ¥3,270,000)
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| Outline of Final Research Achievements |
We have aimed the development of integrated characterization method of nanopores by a combined study using a cryogenic temperature-programmed desorption (TPD) measurement of physisorbed He and molecular simulation. The measurement of TPD curve of weakly physisorbed He on porous solids was achieved by lowering the system temperature to 4 K so that the solid-He interaction potential became larger than the thermal energy of He atom. We have succeeded in reproducing adsorption behavior of mesoporous silicas (MCM-41 and SBA-15) by the molecular simulation using atomistic silica pore model with appropriate surface roughness, which was determined from the small angle X-ray scattering measurement. Moreover, by comparing adsorption energy distribution of the atomistic silica pore model and the experimental result from the cryogenic TPD measurement of physisorbed He, we have provided a guideline for developing of the rational method for determining the surface roughness.
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