 He then became a Research Associate of FNRS (Belgium).In 1973, he was appointed as Professor at the Facultés universitaires Notre-Dame de la Paix (FUNDP) in Namur, Belgium, where he has been the Director of the Laboratory of Catalysis at FUNDP.In 1995, he became Full Professor and Director of the Leverhulme Centre for Innovative Catalysis at the University of Liverpool.