This book intends to present the high lights of this fantastic revolution from the onset up to the modern days, in terms of the life and achievements of the great heroes of the catalytic era, trying to interpret and analyze in terms accessible to a large public, but preserving the precision and clarity of a scientific approach, the changes of paradigms that have characterized their research activity. It is important to underline that , although containing many historical and chronological details, the book is not an history of catalysis in strict sense but rather a book on the sequence of catalytic processes discovered in the last 3 centuries .The book content is partitioned into 9 chapters mainly devoted to specific classes of processes and catalytic reactions. In each chapter the chronological sequence of the discoveries, their innovative character and the concise biographies of the main involved scientists are illustrated and commented. The final ambition of the book is not to give a complete view of all industrial processes but fill the rarity of publications that cover the history of specific catalytic processes.