The Organizing Committee cordially invites you to participate in the 6th International Symposium on Catalysis for Clean Energy and Sustainable Chemistry to be held in Madrid, Spain, from 28th to 30th of September 2026. The spirit of the Organizing Committee of this International Symposium is to organize an encounter between scientists and industrialists worldwide with interest in the technological aspects of application of catalysis to the Sustainable Development. This symposium will help to review the present state of the art of these technologies and to discuss the possible future directions of evolution, and of course, how they can revert positively in the development of the society.