1965-1967

Wilhelms-University Münster, Institute of Inorganic Chemistry

Scientific Associate

1967-1998

BASF AG, Ludwigshafen am Rhein,

Head of the Laboratory for X - Ray Powder Diffraction

Research in heterogeneous catalysis and zeolite chemistry

1969 appointed  leading employee

1998-2002

Universidad de las Islas Baleares

Visiting Professor