Green Chemistry is a vitally important subject area in a world where being as green and environmentally sound as possible is no longer a luxury but a necessity. Its applications include the design of chemical products and processes that help to reduce or eliminate the use and generation of hazardous substances. The Handbook of Green Chemistry comprises 12 volumes, split into subject–specific sets as follows: Set I: Green Catalysis – Volume 1: Homogeneous Catalysis – Volume 2: Heterogeneous Catalysis – Volume 3: Biocatalysis Set II: Green Solvents Set III: Green Processes Set IV: Green Products Heterogeneous catalysts, the most used and longest established catalyst type, play a central role in green chemistry. Many different aspects of this subject are covered in this book, from established industrial applications to newly emerging research. Both fundamentals and applications are treated in detail.