Irregularity of lattice and heterogeneous catalysis

As various irregularities of crystals lattice are discussed above, it is now necessary to analyze their effect and importance in heterogeneous catalysis. There are at least two facts confirming the relation of crystal irregularity with the catalytic active center on catalyst surface. One of them is on those sites where the dislocations and surface point defects occur, and the atomic arrangements would differ from the others sites in catalyst surface, while surface atomic space and the properties of stereochemistry would remain the important factors to decide the catalytic activity. 

Those sites of dislocations of edge and screw are beneficial to the catal3dic reactions. The other is that the electronic factors on those sites of crystal lattice irregularity enhance the high catal3dic activities, because the surface points correlated with the dislocations and defects can modify the electrical properties of solids. 

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