The relationship between zeolite catalyst structure and methanol conversion reaction and the catalyst design

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K15086
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 27030:Catalyst and resource chemical process-related
• Research Institution: The University of Tokyo
• Principal Investigator: Moteki Takahiko 東京大学, 生産技術研究所, 助教 (30794515)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: ゼオライト / MTO反応 / 資源転換 / 触媒

Outline of Final Research Achievements

Methanol to olefins, and ethylene to olefins reactions were performed over zeolite catalysts. The framework properties of the zeolite catalyst was varied in terms of the structure and the chemical composition, and their effects on the product distribution were investigated. The experimental results suggested that the difference in the distribution of the Al site, i.e., catalytic site, affected on the structure of reaction intermediates even over the same framework structure. Furthermore, the cage-type frameowork, which is generally unfavorable for MTO-type reaction due to the quite fast deactivation, was found to possess 10 times longer catalyst lifetime under the specific conditions.

Free Research Field

ゼオライト科学

Academic Significance and Societal Importance of the Research Achievements

炭素資源循環・持続可能な資源転換プロセスといった新たな社会課題において、高選択的・高活性な固体触媒プロセスは必要不可欠であり、ナノ空間を有効に利用できるゼオライト触媒の重要性は増している。本研究では、ナノ空間内で進行する触媒反応について、閉じ込められた反応中間体を制御することにより、触媒特性を自在に制御できることを見出した。本成果は多様な資源を高効率に変換する新たなプロセスの構築に寄与するだけでなく、将来的な基礎化学品製造プロセスの脱石油化に寄与することができる。