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Influence of precursors on the induction period and transition regime of dimethyl ether conversion to hydrocarbons over ZSM-5 catalysts
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Omojola, Toyin, Lukyanov, Dmitry B., Cherkasov, Nikolay, Zholobenko, Vladimir L. and van Veen, André C. (2019) Influence of precursors on the induction period and transition regime of dimethyl ether conversion to hydrocarbons over ZSM-5 catalysts. Industrial & Engineering Chemistry Research, 58 (36). pp. 16479-16488. doi:10.1021/acs.iecr.9b03344 ISSN 0888-5885.
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WRAP-influence-precursors-induction-period-regime-conversion-Omojola-2019.pdf - Accepted Version - Requires a PDF viewer. Download (942Kb) | Preview |
Official URL: http://dx.doi.org/10.1021/acs.iecr.9b03344
Abstract
ZSM-5 catalysts were subjected to step response cycles of dimethyl ether (DME) at 300 °C in a temporal analysis of product (TAP) reactor. Propylene is the major olefin and displays an S-shaped profile. A 44 min induction period occurs before primary propylene formation and is reduced upon subsequent step response cycles. The S-shaped profile was interpreted according to induction, transition-regime, and steady-state stages to investigate hydrocarbon formation from DME. The influence of precursors (carbon monoxide, hydrogen, dimethoxymethane, and 1,5-hexadiene) was studied using a novel consecutive step response methodology in the TAP reactor. The addition of dimethoxymethane, carbon monoxide, hydrogen, or 1,5-hexadiene reduces the induction period of primary olefin formation. However, while dimethoxymethane, carbon monoxide, and hydrogen accelerate the transition regime toward hydrocarbon pool formation, 1,5-hexadiene attenuates it. Heavier hydrocarbons obtained from 1,5-hexadiene compete for active sites during secondary olefin formation. A phenomenological evaluation of multiple parameters is presented.
Item Type: | Journal Article | |||||||||
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Subjects: | Q Science > QD Chemistry T Technology > TP Chemical technology |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | |||||||||
Library of Congress Subject Headings (LCSH): | Methyl ether , Hydrocarbons , Catalysts, Alkenes | |||||||||
Journal or Publication Title: | Industrial & Engineering Chemistry Research | |||||||||
Publisher: | American Chemical Society | |||||||||
ISSN: | 0888-5885 | |||||||||
Official Date: | 11 September 2019 | |||||||||
Dates: |
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Volume: | 58 | |||||||||
Number: | 36 | |||||||||
Page Range: | pp. 16479-16488 | |||||||||
DOI: | 10.1021/acs.iecr.9b03344 | |||||||||
Status: | Peer Reviewed | |||||||||
Publication Status: | Published | |||||||||
Reuse Statement (publisher, data, author rights): | “This document is the Accepted Manuscript version of a Published Work that appeared in final form in Industrial & Engineering Chemistry Research, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see [insert ACS Articles on Request author-directed link to Published Work, see http://pubs.acs.org/page/policy/articlesonrequest/index.html].” | |||||||||
Access rights to Published version: | Restricted or Subscription Access | |||||||||
Copyright Holders: | © 2019 American Chemical Society | |||||||||
Date of first compliant deposit: | 28 August 2019 | |||||||||
Date of first compliant Open Access: | 13 August 2020 | |||||||||
RIOXX Funder/Project Grant: |
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