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Effective control of α-olefin selectivity during Fischer–Tropsch synthesis over polyethylene-glycol enwrapped porous catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
50321 46789 2011 5 PDF Available
Title
Effective control of α-olefin selectivity during Fischer–Tropsch synthesis over polyethylene-glycol enwrapped porous catalyst
Abstract

Effective control of α-olefin selectivity during Fischer–Tropsch synthesis (FTS) was achieved through continuously adding a polar solvent, polyethylene glycol (PEG), in a fixed-bed reactor over an industrial Fe-based catalyst under typical FTS reaction conditions. The α-olefin content increased drastically and was independent of carbon number in C6+ range, whereas the product carbon-number-distribution changed unobviously. Similar trend was also observed in the results obtained from a continuously stirred tank reactor using PEG as reaction medium. This phenomenon can be explained by the suppressed α-olefin secondary reactions due to the existence of a PEG-membrane on the catalyst surface.

Graphical abstractEnwrapping the catalyst particle with a polar solvent, polyethylene glycol (PEG), can significantly increase the selectivity to α-olefins, especially to those with long molecule chains.Figure optionsDownload full-size imageDownload as PowerPoint slideResearch Highlights► The α-olefin selectivity increases markedly with the addition of PEG. ► The α-olefin content becomes almost independent of carbon number. ► The PEG-enwrapped catalyst can realize product separating during reaction. ► This study provides a potential route of producing higher linear α-olefins. ► It reveals the importance of controlling the catalytic environment of FTS reaction.

Keywords
Fischer–Tropsch synthesis; α-Olefin selectivity; Secondary reactions; Polyethylene glycol; Polar solvent; Product distribution
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Effective control of α-olefin selectivity during Fischer–Tropsch synthesis over polyethylene-glycol enwrapped porous catalyst
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 12, Issue 15, 15 September 2011, Pages 1466–1470
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