| 研究課題/領域番号 |
18J22185
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| 研究機関 | 東京大学 |
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研究代表者 |
ZHU JIE 東京大学, 工学系研究科, 特別研究員(DC1)
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| 研究期間 (年度) |
2018-04-25 – 2021-03-31
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| キーワード | continuous flow / zeolite synthesis / emulsion-based / efficient production |
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| 研究実績の概要 |
My Ph.D. research mainly focuses on the rational synthesis of crystalline microporous materials with novel structures and compositions, and explore their potentials in catalytic reactions. In the past year(FY2018), I achieved an ultrafast, continuous flow synthesis of three industrially important high silica zeolites, namely ERI, *BEA and CHA, with an emulsion method, which of great importance for the efficient production of zeolites and further broaden their applications. We demonstrated that the emulsion system offers a unique opportunity to ease the issue of viscosity increase and allow the products to flow smoothly out of the reactor in forms of a suspension. This emulsion-based method can be established as a general approach for the continuous flow synthesis of zeolites.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
1: 当初の計画以上に進展している
理由
The research progress was rather smooth as initial planned. An emulsion-based, continuous flow synthesis of zeolites was successfully achieved. A paper on the continuous synthesis of zeolites with emulsion method has been published on Reaction Chemistry and Engineering. In addition, the synthesized ERI zeolite is now studied in the selective catalytic reduction of nitrogen oxide with ammonium (NH3-SCR) and exhibited unprecedented activity, which is comparable to the performance of the commercial SCR catalyst--CHA zeolite. A paper on this topic is in preparation and will be submitted soon.
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| 今後の研究の推進方策 |
As for the future work, main efforts will be devoted to catalytic reaction and in situ characterization of the synthesized materials. During the past year, a continuous flow synthesis of ERI zeolite was achieved and Cu-ERI exhibited unprecedented activity in NH3-SCR reaction. In the next step, Cu-ERI zeolite will be further evaluated in another promising reaction-the conversion of methane to methanol, which is considered to be the holy grail of catalysis research. The copper active sites in these two reactions will be quantified and compared using in situ characterization, especially X-ray absorption spectroscopy (XAS). Identifying more active and selective materials and understanding the mechanisms are crucial to improve these two reactions toward the goal of a workable applied process.
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