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Liquid-phase alkylation of benzene with ethylene over postsynthesized MCM-56 analogues

Paper ID Volume ID Publish Year Pages File Format Full-Text
40676 45862 2012 8 PDF Available
Title
Liquid-phase alkylation of benzene with ethylene over postsynthesized MCM-56 analogues
Abstract

MCM-56 analogues were postsynthesized via a mild acid treatment technique from hydrothermally synthesized MCM-22 lamellar precursors with Si/Al ratios of 15–45. The physicochemical properties of MCM-56 were characterized by XRD, SEM, N2 adsorption, XPS, 29Si and 27Al MAS NMR, NH3-TPD and pyridine adsorption IR techniques. In comparison to MCM-22 with 3-dimensional MWW topology, the postsynthesized MCM-56 showed a broad X-ray diffraction of emerged 1 0 1 and 1 0 2 reflections and possessed a structural disorder along the layer stacking direction. Composed of partially delaminated MWW nanosheets, MCM-56 analogues had a larger external surface than MCM-22. The MCM-56 and MCM-22 catalysts were employed in the liquid-phase alkylation of benzene with ethylene. MCM-56 analogues exhibited a higher yield of ethylated benzenes and a higher catalytic stability than MCM-22, proving to serve as promising solid-acid catalysts for processing bulky molecules in petrochemical industry.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (387 K)Download as PowerPoint slideHighlights► MCM-56 analogues were postsynthesized from MCM-22 precursors with various Si/Al ratios. ► MCM-56 analogues possess a partially delaminated structure consisting of disordered collection of MWW sheets. ► MCM-56 analogues are more active and durable than MCM-22 in the alkylation of benzene with ethylene.

Keywords
MCM-56 analogue; MCM-22; Postsynthesis; Liquid-phase alkylation; Ethylbenzene
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Liquid-phase alkylation of benzene with ethylene over postsynthesized MCM-56 analogues
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 443–444, 7 November 2012, Pages 103–110
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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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
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