The "21st Edition of International Conference on Catalysis, Chemical Engineering and Technology" (CCT 2026) is set for June 18-20, 2026 at Barcelona, Spain, featuring a hybrid format for both onsite and online participation. Under the theme “Catalyzing Innovation: Connecting Chemistry, Engineering, and Technology for Tomorrow's World,” this event offers an unparalleled opportunity for global collaboration across academia and industry in catalysis and chemical engineering.