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The kinetic of the catalytic decomposition of methyl isobutyl ketone over a Pt/gamma-Al2O3 catalyst.

Chemosphere (2005-10-06)
Ting-Ke Tseng, Hsin Chu, Tzu-Hsing Ko, Lung-Kai Chaung
ABSTRACT

Environmental catalysis also can refer to catalytic technologies for reducing emission of environmentally unacceptable compounds. Catalytic decomposition also is one of the cost-effective technologies to solve the troublesome volatile organic compounds. This study treated methyl isobutyl ketone (MIBK) by a commercial catalyst, Pt/gamma-Al(2)O(3), in an isothermal fixed bed differential reactor. The effects of O(2) and MIBK content in carrier gas on the catalysis's reaction rate are also observed. Three kinetic models, i.e. the Mars and van Krevelen model, Langmuir-Hinshelwood model and power-rate law were applied to best fit the experimental results. The results indicate that the kinetic behavior of MIBK oxidation with catalysis can be accounted for by using the rate expression of the Mars and van Krevelen model and Langmuir-Hinshelwood model. Kinetic parameters are also determined on the basis of the differential reactor data. The experimental results are compared with those of the model predicted.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
4-Methyl-2-pentanone, suitable for HPLC, ≥99.5%
Sigma-Aldrich
4-Methyl-2-pentanone, ACS reagent, ≥98.5%
Supelco
4-Methyl-2-pentanone, analytical standard
Sigma-Aldrich
2-Hexanone, reagent grade, 98%
Sigma-Aldrich
4-Methyl-2-pentanone, ≥99%
Sigma-Aldrich
4-Methyl-2-pentanone, ≥99%, FCC
Supelco
2-Hexanone, analytical standard
Supelco
2-Hexanone, analytical standard

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