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Catalysts
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New Trends in Catalysis for Light Olefin Production
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New Trends in Catalysis for Light Olefin Production

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Catalytic Materials".

Deadline for manuscript submissions: closed (30 November 2021) | Viewed by 5916

Special Issue Editors

Prof. Dr. Javier Bilbao Elorriaga

E-Mail Website
Guest Editor
Dept Chem Engn, Univ Basque Country, POB 644, 48080 Bilba, Spain
Interests: engineering sustainable catalytic processes; catalyst synthesis and characterization; structure–reactivity relationships; waste valorization; kinetic modeling; reactor design
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Andres Aguayo

E-Mail Website
Guest Editor
Dept Chem Engn, Univ Basque Country, POB 644, Bilbao 48080, Spain
Interests: sustainable catalytic processes; zeolites and zeotypes; oxygenates synthesis; added-value chemicals (olefins, fuels, aromatics); kinetic modeling; process simulation
Special Issues, Collections and Topics in MDPI journals
Dr. Eva Epelde Bejerano

E-Mail Website
Guest Editor
Dept Chem Engn, Univ Basque Country, POB 644, 48080 Bilbao, Spain
Interests: sustainable catalytic processes; zeolites and zeotypes; oligomerization-cracking; added-value chemicals (olefins, fuels, aromatics); kinetic modeling; catalyst deactivation
Special Issues, Collections and Topics in MDPI journals
Dr. Ainara Ateka

E-Mail Website
Guest Editor
Department of Chemical Engineering, University of the Basque Country UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain
Interests: CO2 valorization; alternative fuels; syngas; catalysts and catalytic reactions; kinetic modeling; synthesis of methanol, dimethyl ether (DME), and hydrocarbons
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Light olefins (ethylene, propylene, and butenes) are one of the main key building blocks of the petrochemical industry. Historically, they have been obtained in oil-based steam cracking and fluid catalytic cracking (FCC) units. Currently, great efforts are being made to use alternative and more sustainable feedstocks, such as biomass-derived methanol, ethanol, dimethyl ether or bio-oil, and wastes of consumer society (plastics and tires). Additionally, versatile technologies are pursued to face the fluctuating demand of light olefins. The current shortage in propylene production, due the increasing use of ethane in steam cracking units, has led to the development of on-purpose propylene (OPP) technologies, including olefin metathesis/interconversion and paraffin dehydrogenation, among others. Deepening on the insights of both reaction and deactivation mechanisms is also crucial for the process scale-up, where strategies for developing suitable reaction configurations and for catalyst regeneration will also play a significant role. Recently, there has been an increasing interest in process integration, where the direct synthesis of light olefins from syngas and CO2 shows promising prospects.

This Special Issue aims to cover the recent advances made in catalysis for light olefin production from conventional and non-conventional sources. Topics of interest might include, but are not restricted to, the following:

  • Strategies to improve catalyst properties to enhance light olefin selectivity/yield.
  • Catalyst deactivation and coke characterization.
  • Kinetic modeling for process simulation and optimization of the operating conditions.

Prof. Dr. Javier Bilbao Elorriaga
Prof. Dr. Andres Aguayo
Dr. Eva Epelde Bejerano
Dr. Ainara Ateka
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Catalysts is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2200 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • light olefins
  • on purpose propylene
  • zeolites
  • heterogeneous catalysis
  • composites
  • catalyst deactivation
  • kinetic modeling

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Published Papers (2 papers)

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Research

18 pages, 2559 KiB  
Article
Evaluation of Catalysts for the Metathesis of Ethene and 2-Butene to Propene
by Matthias Felischak, Tanya Wolff, Leo Alvarado Perea, Andreas Seidel-Morgenstern and Christof Hamel
Catalysts 2022, 12(2), 188; https://doi.org/10.3390/catal12020188 - 2 Feb 2022
Cited by 3 | Viewed by 2537
Abstract
Different metathesis catalysts were evaluated regarding their activity for propene production from ethene and trans-butene feedstocks. Nickel, molybdenum, rhenium and tungsten, along with bimetallic nickel-rhenium systems were applied with commercial supports and self-synthesized MCM-41. For the latter support the Si/Al ratio was adjusted [...] Read more.
Different metathesis catalysts were evaluated regarding their activity for propene production from ethene and trans-butene feedstocks. Nickel, molybdenum, rhenium and tungsten, along with bimetallic nickel-rhenium systems were applied with commercial supports and self-synthesized MCM-41. For the latter support the Si/Al ratio was adjusted as an additional optimization parameter (Si/Al = 60). Attractive activities were observed using Re and NiRe based catalysts at moderate temperatures of 200–250 °C. In contrast, the tungsten-based catalysts were only active above 450 °C. Three catalysts, namely Re/AlMCM-41(60), NiRe/mix (1:1) and W/SiO2 offered propene selectivity’s exceeding 40% at attractive conversion rates. These catalysts were characterized by BET, powder XRD, NH3-TPD and TPR-TPO-TPR cycles. At specific reaction temperatures, reaction-regeneration cycles were performed, which revealed that for the Re and W catalysts the initial reactant conversions and propene selectivity can be recovered. In contrast, for the NiRe catalyst, a continuous, gradual and irreversible decrease of activity was observed. Even though the tungsten catalyst was operated at the highest temperature, no irreversible decrease in conversion and propene selectivity occurred. Therefore, this catalyst has potential as a promising candidate for the synthesis of propene. Full article
(This article belongs to the Special Issue New Trends in Catalysis for Light Olefin Production)
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15 pages, 2027 KiB  
Article
Dual-Cycle Mechanism Based Kinetic Model for DME-to-Olefin Synthesis on HZSM-5-Type Catalysts
by Maria Magomedova, Anastasiya Starozhitskaya, Ilya Davidov, Anton Maximov and Maksim Kravtsov
Catalysts 2021, 11(12), 1459; https://doi.org/10.3390/catal11121459 - 29 Nov 2021
Cited by 6 | Viewed by 2255
Abstract
A kinetic model for the olefins synthesis from dimethyl ether on zeolite HZSM-5 based catalysts is developed. The model includes the reaction pathways for the synthesis of olefins from oxygenates in the olefinic and aromatic cycles according to modern concepts of the dual-cycle [...] Read more.
A kinetic model for the olefins synthesis from dimethyl ether on zeolite HZSM-5 based catalysts is developed. The model includes the reaction pathways for the synthesis of olefins from oxygenates in the olefinic and aromatic cycles according to modern concepts of the dual-cycle reaction mechanism. The kinetic parameters were determined for the time-stable hydrothermally treated catalysts of various activities Mg-HZSM-5/Al2O3, HZSM-5/Al2O3, and Zr-HZSM-5/Al2O3. The kinetic parameters determination and the solution of the ordinary differential equations system were carried out in the Python software environment. The preliminary estimation of the kinetic parameters was carried out using the Levenberg-Marquardt algorithm, and the parameters were refined using the genetic algorithm. It is shown that reactions activation energies for different catalysts are close, which indicates that the priority of the reaction paths on the studied catalysts is the same. Thus, the topology of the zeolite plays a leading role in the determination of the synthesis routes, rather than the nature of the modifying metal. The developed model fits the experimental data obtained in an isothermal reactor in the range of temperature 320–360 °C, specified contact time 0.1–3.6 h*gcat/gC with a relative error of less than 15%. Full article
(This article belongs to the Special Issue New Trends in Catalysis for Light Olefin Production)
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