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Catalytic cracking of hydrocarbons over modified ZSM-5 zeolites to produce light olefins: A review

Paper ID Volume ID Publish Year Pages File Format Full-Text
41588 45894 2011 17 PDF Available
Title
Catalytic cracking of hydrocarbons over modified ZSM-5 zeolites to produce light olefins: A review
Abstract

Steam cracking of hydrocarbons has been the major source of light olefins for more than half a century. The recent studies have reported that ethylene and propylene can also be produced through the cracking of hydrocarbons over modified ZSM-5 zeolites in a considerable amount.This paper highlights the important current ideas about acid-catalyzed hydrocarbon cracking that has resulted in high yield of ethylene and propylene. Light olefin production via catalytic cracking of various industrial feedstocks, ranging from heavy hydrocarbons to ethane, over modified ZSM-5 zeolites, has been reviewed in the present paper. Furthermore, the influence of various employed promoters, i.e., alkali and alkaline earth, transition, rare earth elements, and phosphorus, on the chemical properties of the modified ZSM-5 and the performance of resulting catalyst in enhancing the selectivity to light olefins, have been addressed. Moreover, the influences of different factors, including the zeolite acidity, Si/Al ratio and the temperature, on the light olefin production and the reaction scheme have been specified. The role of incorporated element in the catalytic cracking mechanism is also summarized.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (129 K)Download as PowerPoint slideHighlights► Review of light olefin production via catalytic cracking of various industrial feedstocks over modified ZSM-5 zeolites. ► The influence of various promoters, i.e. alkali and alkaline earth, transition, rare earth elements and phosphorus, on chemical properties of the modified ZSM-5. ► The effect of ZSM-5 modification on the selectivity of products. ► The influence of different factors, such as the ZSM-5 acidity, Si/Al ratio and the temperature, on light olefin production and the reaction scheme. ► The role of incorporated element in the catalytic cracking mechanism.

Keywords
Light olefins; Catalytic cracking; ZSM-5; Element modification; Lewis/Brønsted acid sites
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Catalytic cracking of hydrocarbons over modified ZSM-5 zeolites to produce light olefins: A review
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 398, Issues 1–2, 15 May 2011, Pages 1–17
Authors
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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