Homework #4: Mechanistic Modeling of Catalytic Reactions.
1. Derivation of Methane Steam Reforming Rate Expressions.
The catalytic reaction of methane and steam over a typical reforming catalyst (Ni/MgAl2O4) results
in two primary reactions:
CH4 + H2O
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CHEN 624: CHEMICAL ENGINEERING KINETICS
Spring, 2012 TAMU
Instructor: Dr. Benjamin A. Wilhite
226 JEB Building
Office Hours: by appointment
Time: T Th, 11:10AM 12:25PM, JEB 112
TEXT: Reading materials in support of lectures will be made available online f
Homework #8: Reactor Stability & Safety
Due: Monday, 4-11-16
1. Stability of CSTR with second-order kinetics. An adiabatic CSTR has been designed for
carrying out the reaction A B, which follows the rate expression:
r = 6x1011 exp[-90,000/RT]*A^2,
CHEN 624: Chemical Reaction Engineering I
Homework #5: Reaction and Diffusion Analysis
1. Power-Law Kinetics Reaction and Diffusion
Using the analysis detailed in lecture, plot (i) inner-most catalyst concentration, uo as a function
Homework #3: Mechanistic Rate Expressions
Due: Monday, Feb 15, 2015
1. Ethane dehydrogenation.
From class, we identified the following mechanistic model which may be used to describe the dehydrogenation
of ethane, neglecting any side-reactions:
CHEN 624: Chemical Reaction Engineering
Due: Monday, April 18th, 2016
Homework #9: Stability Analysis of Reactors
1. Generate a phase plot* for an adiabatic CSTR carrying out the following mole-neutral
# 70, 000 &
Due: Monday, February 1st, 2016
Analysis of Equilibrium Reactors.
Question 1: Equilibrium Reactor Modeling for Single Reaction. A gas-phase reactor is employed to carry
out methane steam reforming at 10atm pressure and 850oC. Under these condi
CHEN 624: Graduate Reaction Engineering, HW #10
1. Optimum Two-Stage Adiabatic CSTR Design
Consider the exothermic reaction, A
R, with DH = -80,000 J/mol and where both
reactant and product have a heat capacity of 40 J/mol/K. Assume a feeds
Homework #11: Dynamic Operation of PFRs
Due: Tuesday, May 3rd 2016
1. Managing and Modeling Packed-Bed Deactivation. A packed-bed reactor with minimal
axial or radial dispersion is used to carry out the endothermic gas-phase isomerization reaction
(A B +
Homework #2: Elementary Kinetic Theory and Microkinetics
Due: Monday, 2-8-15
Identification of transition state from theory of Marcellin-Evans-Polanyi.
Consider the biomolecular exchange reaction,
A + BC AB + C,
Where species A and B and species B and