##  [Shrinking Core Model](/shrinking-core-model) 

  ##  [Shrinking Core Model](https://engineering.quantumdictionary.io/shrinking-core-model-0) 

  

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**Engineering & Applied Technologies Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A phenomenological model for heterogeneous solid–fluid reactions in which reaction proceeds at a sharp moving interface so that an unreacted solid core shrinks over time while a reacted product layer (and possibly an outer fluid film) grows around it; overall conversion is described by the motion of the reaction front and rate contributions from chemical reaction and transport through the product