Design of W-V-Nb complex oxide catalyst for one-step synthesis of acrylic acid from glycerol

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K15095
• 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: Suzuka National College of Technology
• Principal Investigator: Omata Kaori 鈴鹿工業高等専門学校, 材料工学科, 講師 (50734133)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: アクリル酸 / グリセロール / アクロレイン / バイオマス / 固体酸 / タングステン / バナジウム / ニオブ

Outline of Final Research Achievements

Phosphorus-doped W-V-Nb complex oxide catalyst is expected to be an efficient catalyst for directly synthesizing acrylic acid from glycerol. In order to understand the function of phosphorus and design a better catalyst, the effect of phosphorus addition on the crystal structure and catalysis of W-V-Nb complex oxide is investigated. The phosphorus addition to the hydrothermal synthesis process promotes the formation of orthorhombic and trigonal W-V-Nb complex oxides. Orthorhombic and trigonal W-V-Nb complex oxide catalysts give higher acrylic acid yields in acrolein selective oxidation, which is a later step in glycerol to acrylic acid, compared to poorly crystalline catalysts that only have 5- and 7-membered rings.

Free Research Field

触媒化学

Academic Significance and Societal Importance of the Research Achievements

リン添加はW-V-Nb複合酸化物触媒の結晶構造を変化させ、アクリル酸収率の向上に寄与することを明らかにした。今後、高い触媒性能を示す結晶を選択的に合成する方法を確立できれば、更なるアクリル酸収率の向上が期待される。BDF市場で大量に副生する安価なグリセロールから高効率にアクリル酸を合成する技術は、カーボンニュートラルでかつ経済性に優れたアクリル酸の供給を実現する。