Development of non-noble metal catalyst using thermal excitation of radical generation by microwave irradiation and its application

2018 Fiscal Year Final Research Report

• Project/Area Number: 16H04184
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Green/Environmental chemistry
• Research Institution: Nagoya Institute of Technology
• Principal Investigator: Shirai Takashi 名古屋工業大学, 工学(系)研究科(研究院), 准教授 (30571426)
• Co-Investigator(Kenkyū-buntansha): 藤 正督 名古屋工業大学, 工学(系)研究科(研究院), 教授 (50238523)
• Research Collaborator: Nishikawa Harumitsu
• Project Period (FY): 2016-04-01 – 2019-03-31
• Keywords: 環境浄化 / 触媒 / 水酸アパタイト / マイクロ波

Outline of Final Research Achievements

Hydroxyapatite (HAp, Ca10(PO4)6(OH)2) as one of the most popular functional ceramic materials, has been widely utilized as artificial bone and tooth, filler of high-performance liquid chromatograph and protein remover due to its excellent biocompatibility, ion-exchange and adsorbing ability. We have reported efficient oxidative decomposition of VOC on HAp powder due to its thermal-induced active radicals on surface. Herein, porous HAp with controlled pore structure is fabricated via gel-casting process. The fabricated HAp is applied as VOC decomposition filter and the effect of pore structure on decomposition activity is investigated. Such cost-effective HAp filter developed in this work can be expected as a promising alternative catalyst for VOC decomposition, to compare with the conventional precious metal (Pt, Pb) nanoparticle catalyst which requires both critical dispersity and carrier.

Free Research Field

セラミックス工学

Academic Significance and Societal Importance of the Research Achievements

HApは地球上に多く存在するカルシウムとリン酸から構成され、安全かつ安価な材料であり、その材料自身が触媒能を持つ。そのため通常の貴金属触媒のようにセラミックス担体に担持させる必要がなく、HAp材料のみで触媒フィルターを作製することが可能であるなど、環境保全および資源の有効活用のみならず、実用上や経済上の優位性をもつ。高価かつ希少な貴金属を用いず、高効率なガス分解特性を有するHAp触媒が実用化されれば、これまで導入が進まなかった国内外の中小規模施設や環境保護後進国での利用促進による世界的なVOC削減が可能になると考えられる。