Advancement in the Structures/Characteristics of Potassium and Aluminium Based Polyoxometalates’and Their Applications in Organic Reactions

Green chemistry and technology involve the development of chemical manufacturing systems that aim to minimize their negative impact on the environment. The primary objective of this field is to reduce the environmental consequences associated with chemical processes and manufacturing, and also improve overall process performance. While it is advantageous to simply decrease the use of organic solvents in chemical processes, green chemistry, and technology take a more comprehensive approach by evaluating the entire process to identify techniques that can minimize hazards while remaining economically viable. Assessing the environmental impacts of manufacturing processes requires a systematic approach and the use of appropriate metrics that enable quantitative evaluation of environmental hazards. This review focuses on the introduction of heteropoly acids, highlighting their unique features and applications in various fields. The structures and preparation of heteropoly acids, specifically Keggin, Wells Dawson, and Preyssler types, salts of potassium and aluminium, as well as their catalytic applications, are discussed in the present review article.