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Ethanol Dehydration Pathways in H-ZSM-5: Insights from Temporal Analysis of Products Full article

Общее Language: Английский, Genre: Full article,
Status: Published, Source type: Original
Journal Catalysis Today
ISSN: 0920-5861 , E-ISSN: 1873-4308
Output data Year: 2020, Volume: 355, Pages: 822-831 Pages count : 10 DOI: 10.1016/j.cattod.2019.04.018
Tags Isotope labelling; Microkinetic model; Pulse experiments; Reaction mechanism; Zeolites
Authors Batchu Rakesh 1 , Galvita Vladimir V. 1 , Alexopoulos Konstantinos 1 , Glazneva Tatyana S. 2 , Poelman Hilde 1 , Reyniers Marie-Francoise 1 , Marin Guy B. 1
Affiliations
1 Laboratory for Chemical Technology, Ghent University, Technologiepark 125, Ghent, B-9052, Belgium
2 Boreskov Institute of Catalysis, SB RAS, Novosibirsk, Russian Federation

Funding (2)

1 Ghent University B/09947/02
2 Belgian Federal Science Policy Office P7/05

Abstract: Ethanol dehydration to ethene via direct and ether mediated paths is mechanistically investigated via transient experiments in a Temporal analysis of products, TAP-3E reactor over a temperature range of 473–573 K in Knudsen regime conditions. Pulse experiments of ethanol over H-ZSM-5 do not yield diethyl ether as a gas phase product. Cofeed experiments with diethyl ether and C-13 labeled ethanol show that ethene formation from diethyl ether is the preferential route. Kinetic parameters from ab initio based microkinetic modelling of ethanol dehydration are compared to the experimental data of the TAP reactor by an in-house developed reactor model code TAPFIT. Rate coefficients in ethene adsorption are in agreement with the ab initio based microkinetic modelling parameters. The experimental data from a diethyl ether feed are compared to the simulated responses from the ab initio based kinetic parameters and further optimized by regression analysis. Reaction path analysis with the optimized kinetic parameters identifies the preference of an ether mediated path under the applied transient experimental conditions. © 2019 Elsevier B.V.
Cite: Batchu R. , Galvita V.V. , Alexopoulos K. , Glazneva T.S. , Poelman H. , Reyniers M-F. , Marin G.B.
Ethanol Dehydration Pathways in H-ZSM-5: Insights from Temporal Analysis of Products
Catalysis Today. 2020. V.355. P.822-831. DOI: 10.1016/j.cattod.2019.04.018 publication_identifier_short.wos_identifier_type publication_identifier_short.scopus_identifier_type publication_identifier_short.rinz_identifier_type
Dates:
Submitted: Nov 26, 2018
Accepted: Apr 6, 2019
Published online: Apr 8, 2019
Published print: Sep 15, 2020
Identifiers:
publication_identifier.wos_identifier_type WOS:000581923700093
publication_identifier.scopus_identifier_type 2-s2.0-85064280608
publication_identifier.rinz_identifier_type 38728684
publication_identifier.accession_number_identifier_type 2019:743165
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