A two-dimensional lattice (in a particular range of @S06165@ and temperature) into which the @A00152@ is ordered, especially in some cases of @L03607@.
Source: PAC, 1976, 46, 71. (Manual of Symbols and Terminology for Physicochemical Quantities and Units - Appendix II. Definitions, Terminology and Symbols in Colloid and Surface Chemistry. Part II: Heterogeneous Catalysis) on page 76 [Terms] [Paper]