fulltext.study @t Gmail

Kinetic modelling of the SO2-oxidation with Pt in a microstructured reactor

Paper ID Volume ID Publish Year Pages File Format Full-Text
41723 45897 2011 9 PDF Available
Title
Kinetic modelling of the SO2-oxidation with Pt in a microstructured reactor
Abstract

In terms of tons per day SO3 is one of the most important chemicals in the world. It is produced via the contact process in a gas phase catalytic oxidation reaction. The contact process consists of multiple catalyst beds, inter-stage cooling and an absorption step in the case of sulphuric acid production. Transferring this process to a microstructured reactor with its unique heat and mass transport properties should make it possible to develop a small scale one pass synthesis well suited for on-site SO3 production, e.g., for surfactant making. In a test reactor experiments were performed with different molar ratios of sulphur dioxide to oxygen, hydrodynamic residence time and reaction temperature. Numerical simulations with ANSYS FLUENT 12.0 were performed for a single channel configuration. For this purpose a detailed model of the flow, the heat distribution and the surface chemistry was used. For the surface chemistry a detailed kinetic model based on elementary steps occurring on the catalyst surface was used. The assumed multi-step mechanism involves coordination of SO2 on two surface sites. The simulations are compared to the experimental results. Good agreement between the model predictions and the experimental results is achieved. A sensitivity analysis was performed to get an idea of the rate determining steps.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (108 K)Download as PowerPoint slideHighlights► SO2 oxidation experiments in a microstructured test reactor. ► Numerical simulations were performed for a single channel configuration. ► For the surface chemistry a kinetic model based on elementary steps was developed. ► The assumed multi-step mechanism involves coordination of SO2 on two surface sites. ► Model predictions and the experimental results are in good agreement.

Keywords
Micro process engineering; Microstructure reactor; SO2 oxidation; Platinum; Multi-step mechanism; Computational fluid dynamics
First Page Preview
Kinetic modelling of the SO2-oxidation with Pt in a microstructured reactor
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 397, Issues 1–2, 30 April 2011, Pages 209–217
Authors
, , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us