1992 Fiscal Year Final Research Report Summary
Development of Highly Active Metallosilicate Catalysts for Propane Aromatization
| Project/Area Number |
02505006
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| Research Category |
Grant-in-Aid for Developmental Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
工業物理化学・複合材料
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
INUI Tomoyuki Kyoto University, Faculty of Engineering, Professor, 工学部, 教授 (60025989)
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| Co-Investigator(Kenkyū-buntansha) |
TAKEGUCHI Tatsuya Kyoto University, Faculty of Engineering Research Associate, 工学部, 助手 (30227011)
INOUE Masashi Kyoto University, Faculty of Engineering Associate Professor, 工学部, 助教授 (30151624)
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| Project Period (FY) |
1990 – 1992
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| Keywords | Aromatization / Straight-chained saturated hydrocarbons / Ga-silicate / Ot modification / Coke formation / Long-term catalytic test / Full-automatic flow reactor / Computational chemistry |
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| Research Abstract |
Aromatization of C2-C20 straight-chained saturated hydrocarbons was studied on Ga-and Zn-silicates with MFI structure. The conversions increased but the aromatic selectivities decreased with the increase in C number up to C5. For hydrocarbons higher than C6, the selectivities were almost same due to the direct cyclization. The aromatic selectivities were much improved by using Pt incorporated Ga-silicate, which had moderated cracking ability with maintaining the dehydrogenation ability. Effectiveness of Pt modification to improve the catalyst life was reconfirmed and furthermore addition of basic components, which neutralized the surface acidic sites, was also found to be effective. The mechanism of coke formation, property of the formed coke, and rejuvenating treatment method were examined in detail. The long-term catalytic tests for propane aromatization were conducted using a full-automatic flow reactor. On the other hand, to understand the dynamic diffusion process in micropores and the acidic properties of microporous materials, a new evaluating method by computational chemistry was developed. It was applied for this system and proved to be powerful method to comprehend microscopic phenomena.
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