fulltext.study @t Gmail

IM-5 zeolite for steam catalytic cracking of naphtha to produce propene and ethene. An alternative to ZSM-5 zeolite

Paper ID Volume ID Publish Year Pages File Format Full-Text
40224 45846 2013 10 PDF Available
Title
IM-5 zeolite for steam catalytic cracking of naphtha to produce propene and ethene. An alternative to ZSM-5 zeolite
Abstract

•IM-5 zeolite has a higher catalytic activity and hydrothermal stability than ZSM-5.•IM-5 zeolite allows to obtain higher (C2= + C3=) yield than ZSM-5.•Postsynthesis impregnation with phosphorous slow down the zeolite deactivation.•Stabilization of IM-5 zeolite has a minimal effect on yields of ethene and propene.•IM-5 zeolite is a very interesting alternative to ZSM-5 zeolite in the SCC process.

Steam catalytic cracking of naphtha in smaller FCC units can be considered an option to produce more ethene and propene. These units will operate at high reaction temperatures and in the presence of steam. The profitability of these units could be improved with the use of new catalysts with higher activity and hydrothermal stability, without compromising the selectivity to light olefins. We have explored the possibilities of IM-5 zeolite for high temperature steam catalytic cracking (SCC) of a naphtha, as an alternative to commonly used ZSM-5 zeolite. So, we compare the catalytic activity, the effect of operating variables of the process and the yields of interest products between the two zeolites, the IM-5 zeolite and the best of ZSM-5 zeolites studied previously for SCC reaction. Furthermore, we study post-synthesis treatment of zeolite with phosphorous containing precursors to enhance the hydrothermal stability, and the effect of it on the catalytic activity and the yield of products. It can be seen as the use of the zeolite proposal improve the catalytic activity with respect to the best of ZSM-5 zeolite in SCC process, without compromising the yield to products of interest. Furthermore, the incorporation of phosphorous has a large effect on hydrothermal stability of zeolite, showing this zeolite as an important competitor to the ZSM-5 zeolite for steam catalytic cracking of naphtha.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (50 K)Download as PowerPoint slide

Keywords
Steam catalytic cracking (SCC); Production of propene and ethene; Steam deactivation of IM-5 zeolite; IM-5 hydrothermal stability
First Page Preview
IM-5 zeolite for steam catalytic cracking of naphtha to produce propene and ethene. An alternative to ZSM-5 zeolite
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 - Volumes 460–461, 10 June 2013, Pages 106–115
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