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Precoking selectivation for improving benzene product purity in heavy aromatics transalkylation

Paper ID Volume ID Publish Year Pages File Format Full-Text
43802 45989 2008 5 PDF Available
Title
Precoking selectivation for improving benzene product purity in heavy aromatics transalkylation
Abstract

A precoking selectivation technique is developed to improve the benzene purity in the heavy aromatics transalkylation over Pt/ZSM-12. The effect of precoking is selective to coking condition. Precoking in hydrogen can significantly improve benzene product purity. In contrast, precoking in helium results in severe deactivation of catalytic activity and deteriorates benzene product purity. For Pt/ZSM-12 at a platinum content of 200 pm as an example, subject to precoking treatment in hydrogen at a coke content of ca. 15.8 wt%, the benzene product purity can be improved up to the industrial specification of 99.85%.

Graphical abstractA precoking selectivation technique is developed to improve the benzene product purity in the heavy aromatics transalkylation over a platinum-supported on zeolite catalyst. Over the Pt(200)/Z-12 catalyst, the benzene purity is only 96.50%. By the optimum precoking treatment at the coke content of ca. 15.8 wt%, benzene purity is upgraded to the industrial specification of 99.85%. Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Heavy aromatics transalkylation; Zeolite-supported platinum catalyst; Selective coking; Benzene product purity
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Precoking selectivation for improving benzene product purity in heavy aromatics transalkylation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 335, Issue 1, 1 February 2008, Pages 15–19
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