This chapter is from the book
This chapter is from the book
This chapter is from the book
This chapter is from the book
Summary
Each chapter summary gives the key points of the chapter that need to be remembered and carried into succeeding chapters.
A mole balance on species j, which enters, leaves, reacts, and accumulates in a system volume V, is
Equation S1-1
If, and only if, the contents of the reactor are well mixed will the mole balance (Equation (S1-1)) on species A give
Equation S1-2
The kinetic rate law for rj is
- The rate of formation of species j per unit volume (e.g., mol/s·dm3)
- Solely a function of the properties of reacting materials and reaction conditions (e.g., concentration [activities], temperature, pressure, catalyst, or solvent [if any]) and does not depend on reactor type
- An intensive quantity (i.e., it does not depend on the total amount)
- An algebraic equation, not a differential equation (e.g., –rA = kCA,
)
For homogeneous catalytic systems, typical units of –rj may be gram moles per second per liter; for heterogeneous systems, typical units of 
may be gram moles per second per gram of catalyst. By convention, –rA is the rate of disappearance of species A and rA is the rate of formation of species A.
Mole balances on species A in four common reactors are shown in Table S1-1.
TABLE S1-1 SUMMARY OF REACTOR MOLE BALANCES
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