Elements of
Chemical Reaction Engineering
6th Edition



Home

Essentials of
Chemical Reaction Engineering
Second Edition

  Select  Chapter  >>     TOC     Preface     1     2     3     4     5     6     7     8     9     10     11     12     13     14     15     16     17     18     Appendices  
›

By Chapter Hide

  • Objectives
  • Living Example Problems
  • Extra Help
  • - Summary Notes
  • - LearnChemE Screencasts
  • - FAQs
  • - Interactive Computer Modules
  • Additional Material
  • Self Test
  • i>Clicker Questions
  • Professional Reference Shelf

By Concept Hide

  • Interactive Modules
  • -Web Modules
  • -Interactive Computer Games
  • Living Example Problems

U of M Hide

  • Asynchronous Learning
  • ChE 344
  • ChE 528

Chapter 8: Multiple Reactions

Maximizing the Selectivity - Parallel Reactions

Determine the instantaneous selectivity, SD/U, for the liquid phase reactions:

Sketch the selectivity as a function of the concentration of A. Is there an optimum and if so what is it?

Hint 1: Write the equation for selectivity

Hint 2: Sketch the selectivity as a funtion of CA

Full Solution: Find the optimum


 

 

 

 

 

 
 

Hint 1

Back to Problem



































Hint 2

Back to Problem



































Determine the instantaneous selectivity, SD/U, for the liquid phase reactions:

Sketch the selectivity as a function of the concentration of A. Is there an optimum and if so what is it?

Solution

Finding the optimum concentration:

Use CSTR with exit concentration C*A


Back to Chapter 8