Heterogenous Catalysis : In heterogenous catalysis, the reagents combine and transform at the interface between the gas or liquid and the surface of the catalyst. Compare with homogenous catalysis
The Association of Petrochemicals Producers in Europe (APPE), The European petrochemical industry, Glossary of Terms on Chemical Safety for Use in IPCS Publications, van Nieuwenhuyse, Brussels 2006. http://www.petrochemistry.eu/glossary.html, (Petrochem Ind - Brit) {473}