| Project/Area Number |
26420776
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Reaction engineering/Process system
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| Research Institution | Yamagata University |
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Principal Investigator |
Higuchi Takeshi 山形大学, 大学院理工学研究科, 助教 (40312756)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | 合成ゼオライト / マイクロ波加熱 / 分離膜 / ゼオライト / マイクロ波 / 水熱処理 / ゼオライト合成 |
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| Outline of Final Research Achievements |
The process of zeolite formation by microwave heating was analyzed by transmission and scanning electron microscope, dynamic light scattering, nuclear magnetic resonance, X-ray diffraction, small angle X-ray scattering. Several pieces of fundamental knowledge were successfully obtained as follows.
(1) Trace amount of crystal nuclei are present in hydrolysed solution of alkoxide, but most of them are chain polymer of about 16 nm in length. (2) The polymerization structure densifies by 300 W microwave heating up to around 90 min, LTA type zeolite starts to be formed from around 200 min, and by 400 min, grows to particles of about 200 nm. (3) The crystallinity is increased by 12 h of heating and the polymerization is completed. (4) The crystallinity becomes maximum at around 24 h of heating, and dissolution / reprecipitation becomes dominant after that.
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