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Synthesis of Light Olefins from Oxygenated Organic Compounds over Metallosilicates with MFI and MTW-type Zeolite Structures
| Title: | Synthesis of Light Olefins from Oxygenated Organic Compounds over Metallosilicates with MFI and MTW-type Zeolite Structures |
| Other Titles: | MFI型，MTW型ゼオライト構造を有するメタロシリケートを用いた含酸素有機物からの低級オレフィン合成 |
| Authors: | Nakasaka, Yuta1 Browse this author →KAKEN DB | | Tago, Teruoki2 Browse this author | | Masuda, Takao3 Browse this author →KAKEN DB |
| Authors(alt): | 中坂, 佑太1 | | 多湖, 輝興2 | | 増田, 隆夫3 |
| Keywords: | Light olefin | | Metallosilicate | | Crystal size | | Acid site strength | | Oxygenated organic compound |
| Issue Date: | 2017 |
| Publisher: | 石油学会 |
| Journal Title: | Journal of the Japan Petroleum Institute |
| Volume: | 60 |
| Issue: | 6 |
| Start Page: | 277 |
| End Page: | 287 |
| Publisher DOI: | 10.1627/jpi.60.277 |
| Abstract: | Selective production of light olefins over zeolite catalyst requires control of consecutive reactions because the objective products are intermediates. In catalytic reactions using zeolite, the diffusion resistance of both the raw material and products within the crystal, and acid site strength of the zeolite, strongly affect the catalyst activity and selectivity. This review describes the preparation of macro, and nano-sized ferrisilicate and ferroalumino-silicate with MFI and MTW-type zeolite structures and their application to the production of light olefins from oxygenated organic compounds such as acetone and methanol. Nano-sized ferrisilicate with MFI-type zeolite structure showed more stable activity compared to macro-sized zeolite in the acetone to olefin and methanol to olefin reactions. Moreover, metallosilicates containing Fe atoms in the zeolite framework had higher selectivity for light compared to aluminosilicate due to suppression of the consecutive reactions forming aromatics and coke. Ferroaluminosilicate containing two types of Bronsted acid sites, derived from both Fe and Al atoms in the framework, was the most effective catalyst for the production of light olefins from methanol. | | 低級オレフィンは逐次反応の中間体生成物であるため，ゼオライト触媒を用いた選択合成において逐次反応の制御が必須である。ゼオライトを触媒に用いる際，ゼオライト結晶内における反応原料，反応生成物の拡散抵抗およびゼオライト酸点の強度が触媒活性や生成物選択性に強く影響を及ぼす。本稿では，粒径の異なるMFI，MTW型の構造を有するフェリシリケートおよびフェロアルミノシリケートの合成と，含酸素有機物であるアセトン，メタノールからの低級オレフィン合成について解説する。アセトンおよびメタノールからの低級オレフィン合成において，MFI型構造を有するフェリシリケートナノ結晶はマクロ結晶に比べ安定な触媒活性を示した。さらに，両反応に対し骨格中にFeを有するメタロシリケートは芳香族やコーク生成の抑制によりアルミノシリケートに比べ高い低級オレフィン選択性を示した。メタノールからの低級オレフィン合成において，ゼオライト骨格中のFeおよびAlに由来する二種類のブレンステッド酸点を有するフェロアルミノシリケートが低級オレフィン合成に有効であった。 |
| Type: | article |
| URI: | http://hdl.handle.net/2115/70848 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 増田 隆夫
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