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- Title
Research progress of polyoxometalates in catalytic oxidation.
- Authors
YU Mingyue; LIU Jinhua; YU Shulan; ZOU Fang; LIU Fang; ZHANG Qian; GAO Qingping; MA Tianfang; PEI Wenyuan
- Abstract
Polyoxometalates (POMs), as a class of multinuclear clusters, are polymerized of oxygen and early high-valent transition metals (e.g.. Mo. W. V and Nb). Based on the geometry of heteroatoms and the ratio of heteroatoms to coordination atoms, POMs can be classified into six classical configurations including Keggintype, Dawson-type, Anderson-type, Waugh-type, Silverton-type, and Lindqvist-type. They exhibit the diverse structures and versatile properties, which enrich their applications in catalysis, medicine, electrochemistry, magnetism, and so on. The chemistry of POMs is an important branch of in- organic chemistry with a history of more than 200 years. It intersects with physical chemistry, analytical chemistry, structural chemistry, biochemistry, environmental chemistry, material chemistry and many other fields. Modern chemistry of POMs has developed from single POMs synthesis to controllable molecular design synthesis, from simple POMs monomer to high-dimensional, high-core and other novel structure clusters constructed with POMs as building units. Especially, POMs are considered as electron stores due to their strong ability to bear and release electrons, indicating they have redox properties. Therefore, POMs have received increasing attentions as redox heterogeneous catalysts. To resolve the problem of the high solubility of POMs, the design synthesis and performance research of functional complexes with POMs as inorganic ligands or non-coordination templates have become one of hot spots. The encapsulation of POMs into the crystalline architecture results in multifunctional hybrid materials, which combine the merits of POMs and the organic frameworks to achieve specific properties. With the increase of conscious- ness for environmental protection, green oxidants such as hydrogen peroxide and oxygen are utilized as main oxidants for the oxidation. The combination of POMs-based materials with environment friendly oxidants can efficiently catalyze various oxidation reactions, such as epoxidation of olefin, oxidation of sulfur- containing compounds, oxidation of alcohols, oxidation of alkanes and so on. In this paper, an overview of recent advances of POMs in catalytic oxidation was presented.
- Subjects
HISTORY of chemistry; ENVIRONMENTAL chemistry; PHYSICAL &; theoretical chemistry; ANALYTICAL chemistry; ORGANIC chemistry
- Publication
Journal of Molecular Science, 2024, Vol 40, Issue 3, p189
- ISSN
1000-9035
- Publication type
Article
- DOI
10.13563/j.cnki.jmolsci.2023.03.002