CI4C GmbH & Co. KG, operating as Cement Innovation for Climate (CI4C), is a German research company founded in 2019 by Buzzi SpA/Dyckerhoff, Heidelberg Materials, SCHWENK Zement, and Vicat.
Headquartered at the Mergelstetten cement plant, it develops CO₂ capture technologies for cement production via the catch4climate project. The initiative operates a dedicated rotary kiln line with 450 metric tons per day clinker capacity, applying the Pure Oxyfuel process designed by thyssenkrupp Polysius.
Funded privately with over €120 million and without public support, the facility began producing clinker in May 2026 and was officially inaugurated in July 2026.
chemXplore tracks 2 projects involving CI4C.
CI4C's role on them: Owner, Operator, and Developer.
Semi‑industrial demonstration replaces air with oxygen to raise flue‑gas CO₂ and enable near‑95% capture from clinker; dedicated 450 t/day kiln built with >€120m investment.
World-first R&D site tests Pure Oxyfuel CO₂ capture at a Mergelstetten cement line to demonstrate energy- and cost-efficient capture and enable wider deployment.
By country, the most active first. active / all projects
