Special Issue "Catalyst Deactivation in Hydrocarbon Processing"

A special issue of Catalysts (ISSN 2073-4344).

Deadline for manuscript submissions: 30 June 2020.

Special Issue Editors

Guest Editor
Dr. Nikolaos Charisiou Website E-Mail
University of Western Macedonia (UOWM), Department of Chemical Engineering, Laboratory of Alternative Fuels and Environmental Catalysis (LAFEC), Koila, Kozani, 50100, Greece
Interests: biogas reforming; glycerol reforming; hydrogen production; syngas production; renewable diesel; catalyst deactivation
Guest Editor
Prof. Dr. Maria A. Goula Website E-Mail
University of Western Macedonia, Department of Chemical Engineering, Director of the Laboratory of Alternative Fuels and Environmental Catalysis, Member of the General Assembly of the Hellenic Foundation for Research & Innovation (ELIDEK), Koila, Kozani, 50100, Greece
Interests: environmental catalysis; biomass utilization; bio-oil; biogas; glycerol; hydrogen; syngas; renewable diesel; reforming; selective deoxygenation; CO2 hydrogenation
Guest Editor
Prof. Dr. Kyriaki Polychronopoulou Website E-Mail
Department of Mechanical Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
Interests: catalysts synthesis; porous materials; reforming; CO2 sequestration; H2 production and storage

Special Issue Information

Dear Colleagues,

The loss of catalytic activity and/or selectivity over time is an issue of tremendous importance for heterogeneous industrial catalytic processes. The degree of catalyst deactivation depends mainly on the properties of the feed and operating conditions, and it is caused by a variety of mechanisms, such as poisoning, fouling (carbon deposition), thermal degradation, vapor formation, and attrition/crushing. As the performance of catalysts decreases with time, periodic increases of reaction temperature are required in order to maintain constant product yields and/or quality, which means that costs to industry for catalyst replacement and process shutdown are in the order of billions of dollars per year. While catalyst deactivation is inevitable, some of its immediate, drastic consequences may be avoided, postponed, or even reversed.

This Special Issue aims to draw together scientific works on the recent advances in catalyst deactivation, catalyst regeneration, novel catalyst formulations with enhanced stability/tolerance characteristics, understanding of mechanisms, advances in process line-ups, advances in process conditions and reactors, and development of improved methods and tools for investigation.  

Dr. Nikolaos Charisiou
Prof. Dr. Maria A. Goula
Prof. Dr. Kyriaki Polychronopoulou
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 papers will be 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 1600 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

  • hydrocarbon processing
  • deactivation
  • regeneration
  • catalyst degradation
  • carbon deposition
  • sintering
  • poisoning
  • modeling
  • reactor systems

Published Papers (1 paper)

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Research

Open AccessFeature PaperArticle
The Relationship between Reaction Temperature and Carbon Deposition on Nickel Catalysts Based on Al2O3, ZrO2 or SiO2 Supports during the Biogas Dry Reforming Reaction
Catalysts 2019, 9(8), 676; https://doi.org/10.3390/catal9080676 - 09 Aug 2019
Abstract
The tackling of carbon deposition during the dry reforming of biogas (BDR) necessitates research of the surface of spent catalysts in an effort to obtain a better understanding of the effect that different carbon allotropes have on the deactivation mechanism and correlation of [...] Read more.
The tackling of carbon deposition during the dry reforming of biogas (BDR) necessitates research of the surface of spent catalysts in an effort to obtain a better understanding of the effect that different carbon allotropes have on the deactivation mechanism and correlation of their formation with catalytic properties. The work presented herein provides a comparative assessment of catalytic stability in relation to carbon deposition and metal particle sintering on un-promoted Ni/Al2O3, Ni/ZrO2 and Ni/SiO2 catalysts for different reaction temperatures. The spent catalysts were examined using thermogravimetric analysis (TGA), Raman spectroscopy, high angle annular dark field scanning transmission electron microscopy (STEM-HAADF) and X-ray photoelectron spectroscopy (XPS). The results show that the formation and nature of carbonaceous deposits on catalytic surfaces (and thus catalytic stability) depend on the interplay of a number of crucial parameters such as metal support interaction, acidity/basicity characteristics, O2– lability and active phase particle size. When a catalytic system possesses only some of these beneficial characteristics, then competition with adverse effects may overshadow any potential benefits. Full article
(This article belongs to the Special Issue Catalyst Deactivation in Hydrocarbon Processing)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Tuning combined steam and dry reforming of methane for “metgas” production: a thermodynamic approach and state-of-the art catalysts
Author: Karam Jabbour
Affiliation: Department of Chemical Engineering, Faculty of Engineering, University of Balamand, POBox 100, Tripoli, Lebanon

Abstract: Nowadays, combined steam and dry reforming of methane (CSDRM: CH4 + 1/3CO2 + 2/3H2O → 8/3H2 + 4/3CO) to synthesis gas (syngas, H2 and CO mixture) is gaining significant attention. This process enables the production of syngas from renewable energy sources such as biogas whose main components are methane, carbon dioxide and, water. Moreover, this reaction allows the conversion of two major greenhouse gases (CH4 and CO2) into the valuable gaseous mixtures, largely utilized as feedstocks in the production of synthetic fuels and chemical intermediates in petrochemical industries. Compared to conventional dry and steam reforming reactions, the CSDRM generates “metgas”, syngas with an H2:CO product molar ratio of 2, known to be ideal for synthesizing methanol, an important intermediate in gas to liquid processes. Although noble metals are models for CSDRM, their cost and limited availability led to developing transition metal catalysts, especially those based on nickel. However, drawbacks of Ni0 including sintering, coking, re-oxidation and, non-selective “metgas” generation still need to be overcome. A promising way consists in stabilizing (occluding) the reduced nickel nanoparticles inside confined spaces like the pores of structured oxide supports. This review addresses simulated thermodynamic aspects associated to CSDRM for the sole production of “metgas”. Moreover, recent advancements in the design and preparation of Ni-based catalysts for CSDRM including effect of support, promoter, preparation method and, operation conditions on the stability towards “metgas” production will be reported. After such an overview of the recent works carried out in this direction, this contribution will highlight on the recent promising data obtained on ordered mesoporous oxide systems. Future trends and outlooks regarding design of efficient catalytic systems will also be discussed. It is worth mentioning that (to my knowledge), there exist no work establishing the coverage of both thermodynamic interpretation and critical assessment of all available literature data dealing with the CSDRM reaction.

 

 

 

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