Heteropolyacids As Highly Efficient And Green Catalysts Applied In Organic Transformations

Heteropolyacids as Highly Efficient and Green Catalysts Applied in Organic Transformations introduces heteropolyacids (HPAs) as promising candidates for use as green catalysts. This book initially presents an overview of chemistry of HPAs, including the history of their discovery and applications, systematic classifications, solubility, coordination and binding chemistry, isomerization, stability, redox activity, acidic properties, basicity, skeleton structure, structure types, self-assemblage, surface area, electrochemical behavior, methods of investigation, and characterization. Other sections present and compare the applications of HPAs as homogeneous and heterogeneous catalysts. The book provides readers with a basic-to-advanced range of knowledge on how useful and green HPAs can be used for use as catalysts in organic transformations and even the synthesis of complex organic molecules. Focuses on applications of HPAs as catalysts, but also includes basic information on HPAs to make it useful to those researchers and scientists whose activities are focused on biochemical analysis, electrochemistry, electrochemical devices, protection of corrosion, medicine and photo-catalyzed reactions Includes a subdivision devoted to HPA-catalyzed multicomponent reactions for the synthesis of some biologically active compounds via a double-green strategy Illustrates reactions with approximately 100 chemical reaction schemes to aid understanding

Heterogeneously catalyzed selective oxidations of alcohols is a highly topical field. The first chapter of this brief describes the importance of the selective oxidation of alcohols and advantages of heterogeneous catalysts over conventional catalysts, use of environmentally benign oxidants, and the design of selective catalysts by tailoring of polyoxometalates at the molecular level. Chapter 2 describes synthesis, characterization 11-molybdophosphate based supported materials and their use as heterogeneous catalysts for oxidation of alcohols with molecular oxygen under solvent free mild reaction condition. ZrO2, Al2O3, MCM-41 and zeolite Hβ were used as supports. Chapter 3 describes synthesis, characterization of transition metals (Mn, Co, Ni, Cu)- substituted phosphomolybdates and their use as heterogeneous catalysts for oxidation of alcohols with molecular oxygen under solvent free mild reaction condition. Chapter 4 describes conclusive remarks for present catalytic systems.

The book provides insight into the working of clays and clay minerals in speeding up a variety of organic reactions. Clay minerals are known to have a large propensity for taking up organic molecules and can catalyse numerous organic reactions due to fine particle size, extensive surface area, layer structure, and peculiar charge characteristics. They can be used as heterogeneous catalysts and catalyst carriers of organic reactions because they are non-corrosive, easy to separate from the reaction mixture, and reusable. Clays and clay minerals have an advantage over other solid acids as they are abundant, inexpensive, and non-polluting.

Providing an overview of the current status of chemistry; regarding the implementation of clean, eco-friendly, less improvident manufacturing processes. This book acknowledges a more eco-conscious face of multi-dimensional chemistry: the need, principle, evolution, strategies and bioethical concerns for sustainable development of environment.

This volume compiles 63 peer-reviewed scientific papers documenting the latest developments in the application of homogeneous, heterogeneous, and immobilized homogenous catalysts used in organic synthesis. Catalysis of Organic Reactions consists of primary research articles accompanied by experimental sections that emphasize chemical processes with

The book presents a succinct summary of methods for the synthesis and biological activities of various different-sized bioactive heterocycles using different green chemistry synthetic methodologies, like microwave, ultrasonic, water mediated, ionic liquids, etc. The book also provides an insight of how green chemistry techniques are specific to the bioactive heterocyclic compounds.

The increase in the amount of glycerin in the market is a burden for all producers, especially those operating in the biodiesel sector: reuse options are in fact limited for the management of this by-product. Glycerol enhancement has therefore become a priority to improve the sustainability of the biodiesel industry. Nevertheless, the multifunctionality of glycerol makes it a promising precursor for different types of production (fuel/biofuel, chemical products). This conversion has therefore become a subject of multifaceted research that requires an exchange of knowledge across many sectors. In this book, different disciplines (chemistry, biology, engineering, etc.) have been taken into consideration to propose an interdisciplinary point of view on different aspects.

The use of alternative energy forms and transfer mechanisms is one of the key approaches of process intensification. In recent years, significant amounts of research have been carried out in developing chemical processing technologies enhanced by plasma, electric and magnetic fields, electromagnetic and ultra-sound waves and high gravity fields. Discussing the broad impact of alternative energy transfer technologies on reactions, separations and materials synthesis, this book reports on recent breakthrough results in various application areas. It provides a comprehensive overview of the current developments in the field. The book enables industrialists, academics and postgraduates in alternative-energy based processing to see the potential of alternative energies for green chemistry and sustainability of chemical manufacturing.