Additional Homework Problems

CDP10-GB

  The use of a differential reactor to study the formation of methane from hydrogen and carbon monoxide over a nickel catalyst gave the following:
   

image 10eq32.gif

     
    Suggest a mechanism and rate-limiting step that is consistent with the experimental observation.
     
   

It is desired to produce 20 tons/day of CH 4 . Calculate the catalyst weights necessary to achieve 80% conversion in:

(a) A fixed bed.
(b) A fluidized bed.

The feed consists of 75% H 2 and 25% CO at a temperature of 500°F and a pressure of 10 atm. Assume both molecular and atomic hydrogen are adsorbed on the surface.