Development of a novel method for the preparation of composite catalytic nanoparticles using gas-phase particle processing

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K04750
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 27010:Transport phenomena and unit operations-related
• Research Institution: Hiroshima University
• Principal Investigator: Shimada Manabu 広島大学, 先進理工系科学研究科(工), 教授 (70178953)
• Co-Investigator(Kenkyū-buntansha): 久保 優 広島大学, 先進理工系科学研究科(工), 助教 (00633752)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: エアロゾルプロセス / CVD / 助触媒 / 粒子被覆 / 噴霧乾燥

Outline of Final Research Achievements

Fabrication methods that use aerosol processes to precisely synthesize particles and deposit foreign materials in the gas phase have been developed, targeting catalyst particles with foreign substances attached (composite catalyst particles), which are expected to exhibit superior characteristics compared to catalysts composed of a single substance. The properties of various composite catalyst particles produced through processes such as gas-phase mixing of heterogeneous particles and the deposition of foreign substances on the particle surface, as well as the relationships among manufacturing conditions and performance, were evaluated. As a result, the factors that enable composite catalyst particles to outperform conventional catalyst particles were identified.

Free Research Field

化学工学

Academic Significance and Societal Importance of the Research Achievements

本研究は、これまでに気相での粒子合成やハンドリングの研究開発で培われてきた基盤技術を、複合触媒粒子の気相精密作製プロセスという新しい対象に適用するという学術的新規性・独自性を有する。気相作製プロセスには、不純物の混入が少ないこと、工程が簡便であること、環境・資源インパクトが小さいことなど多くのメリットがある。本研究成果により、高価な新規物質を用いることなく触媒の性能の向上が図れる見通しが得られた。他の機能性複合ナノ粒子の作製法への展開も期待できる。