Environmentally Benign Catalysts

Over the past twenty years, Catalysis by Heteropolyacids (HPAs) has received wide attention and led to new and promising developments both at academic and industrial level. In particular, heterogeneous catalysis is particularly attractive because it generally satisfies most of green chemistry’s requirements. By emphasizing the development of third generation catalysts, this volume presents trends and opportunities in academic and industrial research. The book appeals to postgraduates, researchers, and chemists working in the field of environmentally benign catalysts as well as catalytic processes.

This book presents a large number of organic reactions performed under green conditions, which were earlier performed using anhydrous conditions and various volatile organic solvents. The conditions used involve green solvents like water, super critical carbon dioxide, ionic liquids, polymer-supported reagents, polyethylene glycol and perfluorous liquids. A number of reactions have been conducted in solid state without using any solvent. Most of the reactions have been conducted under microwave irradiations and sonication. In large number of reactions, catalysts like phase transfer catalysts, crown ethers and biocatalysts have been used. Providing the protocols that every laboratory should adopt, this book elaborates the principles of green chemistry and discusses the planning and preparations required to convert to green laboratory techniques. It includes applications relevant to practicing researchers, students and environmental chemists. This book is useful for students (graduate and postgraduate), researchers and industry professionals in the area of chemical engineering, chemistry and allied fields.

The study of environmental interfaces and environmental catalysis is central to finding more effective solutions to air pollution and in understanding of how pollution impacts the natural environment. Encompassing concepts, techniques, and methods, Environmental Catalysis provides a mix of theory, computation, analysis, and synthesis to support the

Heterogeneous Catalysis in Sustainable Synthesis is a practical guide to the use of solid catalysts in synthetic chemistry that focuses on environmentally benign applications. Collating essential information on solid catalysts into a single volume, it reveals how the efficient use of heterogeneous catalysts in synthetic chemistry can support sustainable applications. Beginning with a review of the fundamentals of heterogeneous catalytic synthesis, the book then explores the basic concepts of heterogeneous catalytic reactions from adsorption to catalyst poisons, the use of non-traditional activation methods, recommended solvents, the major types of both metal and non-metal solid catalysts, and applications of these catalysts in sustainable synthesis. Based on the extensive experience of its expert author, this book aims to encourage and support synthetic chemists in using solid catalysts in their own work, while also highlighting the important link between heterogeneous catalysis and sustainability to all those interested. Combines foundational knowledge with a focus on practical applications Organizes information by reaction type, allowing readers to easily find examples of how to carry out specific reaction types with solid catalysts Highlights emerging areas such as nanoparticle catalysis and metal-organic framework (MOF) based catalysts

Edited by the leading expert on the topic, this is the first book to present the latest developments in this exciting field. Alongside the theoretical aspects, the top contributors provide practical protocols to give readers additional important information otherwise unavailable. A must for every synthetic chemist in academia and industry.

This groundbreaking book offers an in-depth description of sustainable green catalytic processes that have emerged as the means to empower the existing protocols with greener, sustainable, and environmentally benign versions that hold enormous potential in industry and society. Growing worldwide concerns about environmental pollution and global warming have directed the attention of scientists towards approaches for developing sustainable protocols, and the need for employing greener and more sustainable catalytic approaches that are environmentally greener and more eco-friendly than current ones. Green and sustainable catalysts are the one class of catalysts that possess higher selectivity and activity, efficient recovery from the reaction medium, recyclability, cost-effectiveness and are prepared using environmentally benign preparation techniques. The most potent instrument in organic synthesis, and the cornerstone of green chemistry, is catalysis which has broadened the possibilities for organic transformations in the direction of a sustainable future. The catalyst has been playing a vital role, from the improvement of reaction conditions to enhanced selectivity towards the intended product and a decrease in the creation of byproducts. The purpose of this book is to highlight the developments made towards designing new catalysts (homogeneous, heterogeneous, organocatalyst, nanocatalyst, photocatalyst, nanophotocatalyst, biocatalyst, nanobiocatalyst, metal catalyst etc,.) and present the advancements in the field of chemical synthesis using greener catalytic routes with far-reaching applications. The other environmentally friendly method is the enzymatic synthesis of organic molecules, which substitutes safe reagents for those that imitate the biosynthetic route to synthesize the desired organic molecules. With its ability to produce transformations that occasionally enable the reduction of steps in a synthetic route, biophotocatalysis has long been recognized as a green technology and key to creating environmentally friendly and sustainable chemistry. The employment of sustainable green processes on the most crucial reaction steps of the synthetic protocol satisfies contemporary needs for environmentally friendly operations during the creation of valuable chemicals. Readers will find the book: details new catalysts development designs (homo and heterogeneous); presents the advancement of organic synthesis using greener catalytic routes with far-reaching applications; elaborates on preparation techniques for green and sustainable catalysts that possess higher activity, efficient recovery, and cost-effectiveness; discusses how to epitomize a green approach towards the preparation of organic moieties via enzymatic synthesis; analyzes nano-catalysis with green-based reagents and solvents that allow producers to follow the fundamental pillars of the green economy; elucidates green chemistry’s principles and metrics of the chemical’s life cycle and design through disposal. Audience The core audiences for this book include scientists and engineers working in green chemistry, materials science, photocatalysts, biotechnology, nanotechnology, waste minimization, and sustainability. This book is an excellent resource for graduate students, R&D experts, and researchers in academic and industrial fields of chemical synthesis.

Over the past few decades, mankind has observed an unprecedented and remarkable growth in industry, resulting in a more prosperous lifestyle for peoples of many countries. In developing countries, however, explosive industrial growth is just now beginning to raise the living standards of the people. Most industries, especially in these developing countries, are still powered by the burning of fossil fuels; con- quently, a lack of clean energy resources has caused environmental pollution on an unprecedented large and global scale. Toxic wastes have been relentlessly released into the air and water leading to serious and devastating environmental and health problems while endangering the planet and life itself with the effects of global warming. To address these urgent environmental issues, new catalytic and photocatalytic processes as well as open-atmospheric systems are presently being developed that can operate at room temperature while being totally clean and ef?cient and thus environmentally harmonious. Essential to technologies harnessing the abundant solar energy that reaches the earth are the highly functional photocatalytic proce- es that can utilize not only UV light, but also visible light.

The shift towards being as environmentally-friendly as possible has resulted in the need for this important volume on homogeneous catalysis. Edited by the father and pioneer of Green Chemistry, Professor Paul Anastas, and by the renowned chemist, Professor Robert Crabtree, this volume covers many different aspects, from industrial applications to atom economy. It explains the fundamentals and makes use of everyday examples to elucidate this vitally important field. An essential collection for anyone wishing to gain an understanding of the world of green chemistry, as well as for chemists, environmental agencies and chemical engineers.