WAYNE, Pa., May 6, 2025 /PRNewswire/ -- Ecovyst Inc. (NYSE: ECVT), a leading integrated and innovative global provider of advanced materials, specialty catalysts, virgin sulfuric acid and sulfuric acid regeneration services ("Ecovyst"), announced today that Eco Services Operations Corp., a wholly-owned subsidiary of Ecovyst, has completed its acquisition of the Waggaman, Louisiana sulfuric acid production assets of Cornerstone Chemical Company."We are excited to welcome the Waggaman team to Ecovyst and we l ...