Development of efficient catalysts for selective photooxidation with molecular oxygen

2015 Fiscal Year Final Research Report

• Project/Area Number: 26620148
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Green/Environmental chemistry
• Research Institution: Tokyo Metropolitan University
• Principal Investigator: SHISHIDP Tetsuya 首都大学東京, 都市環境科学研究科, 教授 (80294536)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: バイオマス / 光触媒 / 選択酸化 / 酸素 / アルコール / アミン

Outline of Final Research Achievements

Cross-dehydrogenative coupling of alcohols with amines to imine, imidazole, and quinoxaline over niobium oxide (Nb2O5) photocatalyst under mild conditions via in situ doping mechanism were investigated. The C-N coupling reactions of various alcohols with amines to form secondary imines take place over Nb2O5. The C-O coupling between substituted phenols and alcohols took place over Nb2O5 under visible light irradiation. Various alcohols including unstable functional group can be coupled with substituted phenols to form asymmetric ether under visible light irradiation. The correlation between photocatalytic activity and surface property of Nb2O5 was examined. The amount of surface complex is important factor for photooxidation on Nb2O5. The adsorption behavior of both substrates and products on surface of photocatalyst should be controlled to achieve a high activity.

Free Research Field

触媒化学・表面化学