fulltext.study @t Gmail

Propane dehydrogenation kinetics on supported Pt catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
38822 45792 2016 13 PDF Available
Title
Propane dehydrogenation kinetics on supported Pt catalyst
Abstract

•A comprehensive kinetic model for PDH main and side reactions and steam reforming was composed.•Catalyst deactivation was modeled in presence of steam.•Catalyst deactivation can be significantly suppressed with P < 5 bar, with 10% steam at feed.•Pellet diffusion effects on activity and selectivity are small; the effect on coking is significant.•Rate of deactivation correlates with carbon build up on the surface

A kinetic model of propane dehydrogenation on a Pt,Sn/Mg(Al)O is presented, accounting for product distribution due to main and side reactions, for deactivation rates and for diffusion resistance. Parameters were estimated from steady state experiments at varying pressure and from temperature-programmed experiments, and are compared with previous models on similar catalysts and with published computed results. Steam was added to slow coke formation, leading to some steam reforming. The rate of deactivation was shown to correlate with carbon build up on the surface, which was determined from the selectivity to carbon.Application of the model to design a Pd-membrane reactor suggests that pressure should be kept below 5 bar and steam around 10% in feed, while pellet size affects mainly the selectivity while the effect on conversion is small. While the main reaction is fast, side reactions are not negligible, especially under conditions of a membrane reactor, but selectivity to propane can be maintained about 95%.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (211 K)Download as PowerPoint slide

Keywords
Propane dehydrogenation; Pt catalyst; Catalyst deactivation; Propane steam reforming
First Page Preview
Propane dehydrogenation kinetics on supported Pt catalyst
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 516, 25 April 2016, Pages 17–29
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