Modeling and Optimization: Isomerization Reaction Rate using Response Surface Methodology with Two Kinetic Model Over Bi-Porous Catalysts

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Parsafard Nastaran

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Journal Paper

Paper Information

Journal: Journal of Chemical and Petroleum Engineering Year:2024 | Volume:58 | Issue:1 Page(s): 1-15

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Title

Modeling and Optimization: Isomerization Reaction Rate using Response Surface Methodology with Two Kinetic Model Over Bi-Porous Catalysts

Author(s)

Parsafard Nastaran | Issue Writer Certificate

Keywords

kineticsQ4

Langmuir–Hinshelwood modelQ4

n-Heptane isomerizationQ4

RSM-CCDQ4

Abstract

A response surface methodology (RSM) with 3 levels and 4 variables was used to model and optimize the n-Heptane isomerization kinetic process over Pt-HZSM-5/HMS catalysts in a fixed bed micro reactor. 30 sets of isomerization rate tests were performed at different conditions of H2 flow rate (20-45 ccmin−1), n-heptane flow rate (2-4.5 cch−1), the temperatures (200-350 °C), and the weight percent of HZSM-5 (10-40%). It was observed that the amounts of HZSM-5 into Pt-HMS structure has the greatest effect on the rate of reaction. The surface and contour plots confirm that the rates do not considerably change versus temperature, n-heptane and H2 flow rates. 0.24 molg−1s−1 is the highest reaction rate obtained in the 4.5 cch−1 n-heptane and 45 cc min−1 H2 flow rate. The RSM was effective for predicting and optimizing this process. The modelling results also show both power-law and Langmuir–Hinshelwood models are in agreement with the experimental data.

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