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  1. A mole balance on species j, which enters, leaves, reacts, and accumulates in a system volume V, is

    Equation S1-1

    s1_equ01.jpg

    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

    s1_equ02.jpg

  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, 023equ01.jpg)

For homogeneous catalytic systems, typical units of –rj may be gram moles per second per liter; for heterogeneous systems, typical units of r-j-slash.jpg 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.

  1. 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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