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1. Methyl ethyl ketone (MEK) is an important industrial solvent that can be produced from the
dehydrogenation of butan-2-ol (Bu) over a zinc oxide catalyst.
Bu → MEK + H₂
The following data giving the reaction rate for MEK were obtained in a differential reactor at
490 °C.
PBu (atm)
2
0.1
0.5
1
2
1
PMEK (atm)
5
0
2
1
0
0
PH2 (atm)
0
0
1
1
0
10
Γ' ΜΕΚ
0.044
0.040
0.069
0.060
0.042
0.059
(mol/h-g-cat)
a) Suggest a rate law consistent with the experimental data
b) Suggest a reaction mechanism and rate-limiting step consistent with the rate law. Hint:
Some species might be weakly adsorbed.
c) Plot conversion and reaction rate as a function of catalyst weight for an entering molar
flow rate of pure butan-2-ol of 10 mol/min at an entering pressure P0 = 10 atm. Please
plot up to a 95% conversion of butan-2-ol. How much catalyst is required for this
conversion?