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Enhancing activity without loss of selectivity – Liquid-phase alkylation of benzene with ethylene over MCM-49 zeolites by TEAOH post-synthesis

Paper ID Volume ID Publish Year Pages File Format Full-Text
39282 45816 2015 10 PDF Available
Title
Enhancing activity without loss of selectivity – Liquid-phase alkylation of benzene with ethylene over MCM-49 zeolites by TEAOH post-synthesis
Abstract

•MCM-49 is post-synthesized by TEAOH with high crystallinity preserved.•Post-synthesis by TEAOH improves the surface areas, volumes, and acid sites of MCM-49.•The morphology of post-synthesized MCM-49 is tailored into small irregular sheets.•The ethylene conversion is enhanced without loss of ethylbenzene selectivity.

As-synthesized and calcined MCM-49 zeolites were post-synthesized by tetraethylammonium hydroxide to tailor their morphology, texture properties, acid sites and catalytic performances. With post-synthesis by tetraethylammonium hydroxide, both as-synthesized and calcined MCM-49 zeolites have showed remarkable morphology change from rose-like shape into disorderly packed irregular MWW sheets, and improved surface areas, pore volumes and acid sites without obvious loss of crystallinity. The samples before and after tetraethylammonium hydroxide treatment were used as catalysts in liquid-phase alkylation of benzene with ethylene. Importantly, a prominent increase in ethylene conversion was observed without loss of ethylbenzene selectivity over post-synthesized MCM-49 catalysts in liquid-phase alkylation of benzene with ethylene.

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Keywords
MCM-49; Tetraethylammonium hydroxide; Post-synthesis; Liquid-phase alkylation; Ethylebenzene
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Enhancing activity without loss of selectivity – Liquid-phase alkylation of benzene with ethylene over MCM-49 zeolites by TEAOH post-synthesis
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 497, May 2015, Pages 135–144
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