This paper provides an overview about todays use of zeolites and related microporous materials as catalysts within the fields of
refining, petrochemistry and commodity chemicals. The content of this presentation is devoted to gas phase catalysis—with focus on
acid catalysis, hydrocarbon conversion and formation, oil and natural gas upgrading as well as catalytic probe reactions for the
characterisation of zeolites and related microporous materials. The review is primarily meant for beginners who intend to get
acquainted with this field. However, for more detailed information the interested reader is invited to consult the dedicated papers
cited throughout this overview