Several factors can affect bulk migration in catalytic materials:
1. Temperature: Higher temperatures generally increase the rate of bulk diffusion. 2. Material Structure: The crystallographic and morphological features of a material can significantly influence bulk migration. 3. Defects and Doping: The presence of defects, grain boundaries, and dopants can either enhance or hinder bulk migration. 4. Chemical Potential Gradient: A gradient in chemical potential can drive bulk migration, impacting the distribution of reactants and products.