Arjan W. Kleij (1971) received his MSc (with honors) and PhD (Cum Laude) from the University of Utrecht (The Netherlands) working with Gerard van Koten. In 2002 he moved to Spain for a postdoctoral stay as a NWO TALENT fellow with Javier de Mendoza, and then he held another postdoc appointment at the University of Amsterdam (The Netherlands) working with Joost Reek. He also held various scientific positions in the industry working as a project leader (Avantium Technologies) and senior research scientist (Hexion Specialty Chemicals). In 2006, he returned to Spain as ICREA Researcher and ICIQ Group Leader, and was promoted to ICREA Research Professor in 2011. He is member of the advisory board of Current Organic Chemistry (2014-) and ChemSusChem (2016-). Guest editor for Catal. Sci. & Technol. (2014) and ChemSusChem (2016), chairman of the Carbon Dioxide Conversion Catalysis conference in Albufeira (Portugal) in 2016. Total citations >5500 and current h-index of around 43.