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 6: Isothermal Reactor Design: Molar Flow Rates

Additional Homework Problems

CDP6-FA

The removal of nitrogen from organic compounds (i.e., hydrodenitrogenation) is an important industrial reaction. We consider the first reaction step of this liquid-phase process in which 5,6-benzoquinoline (species A) is reacted at 100°C in a solution saturated with hydrogen (2500 psig) (i.e., excess H 2 ) [Ind. Eng. Chem., 28, 139 (1989)].

The following data were obtained at 100°C in a batch reactor using sulfided CoMo as a catalyst at a concentration of 20 g/dm 3 .

IMAGE 04eq18.gif

Also note that the rate at 110° C is approximately four times the rate at 80°C. Verify that the reaction is pseudo-first order in 5,6-benzoquinoline and determine the specific reaction rate.

It has been learned that the specific reaction rate is directly proportional to the catalyst concentration (i.e., first order). It is proposed to double the catalyst concentration and drop the temperature to 90°C. Plot the conversion expected under these conditions as a function of time and compare with the data above.
[2nd Ed. P4-7]