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Catalysts
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Catalytic Combustion
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Catalytic Combustion

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

Deadline for manuscript submissions: closed (15 June 2013) | Viewed by 41956

Special Issue Editor

Dr. Marco J. Castaldi

E-Mail Website
Guest Editor
Chemical Engineering Department, The City College of New York, City University of New York, 140th Street at Convent Avenue, Steinman Hall, Room 307, New York, NY 10031, USA
Interests: reforming catalysis; gasification; combustion; reaction engineering; mechanisms

Special Issue Information

Dear Colleagues,

Catalytic combustion has been studied extensively for a variety of catalyst formulations and fuel conversion. In the late 1980’s to early 2000’s catalytic combustion of natural gas was determined to be one of a couple of technologies that can meet ultra-low NOx (i.e., less than 3 ppmV@15% O2) requirements in the power generation industry. The extreme temperature gradients and rapid reaction kinetics are coupled with the requirement to maintain a low pressure thus making the design of the system very challenging. Although the pace of development has slowed recently there is still research continuing primarily due to the attributes associated with catalytic combustion. For example, catalytic combustion enables operation outside the flammability regime and it releases heat directly onto a surface enabling non-conventional heat integration. Furthermore, it has been shown that catalytic combustion has the ability to interrupt the NOx formation pathways and does not allow carbon-based emissions, such as CO and UHC to be released making it a true pollution prevention technique. Finally, there are some very similar performance characteristics with partial oxidation systems. It is anticipated that as synthetic fuels are developed their combustion characteristics will vary yet catalytic combustion may normalize those variations.

This special issue will cover numerous developments in the area of catalytic combustion research.

Prof. Dr. Marco J. Castaldi
Guest Editor

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

  • catalysis
  • combustion
  • pollution prevention
  • high temperature

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Published Papers (4 papers)

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Research

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1015 KiB  
Article
Complete Toluene Oxidation on Pt/CeO2-ZrO2-ZnO Catalysts
by Min Yeong Kim, Tomoya Kamata, Toshiyuki Masui and Nobuhito Imanaka
Catalysts 2013, 3(3), 646-655; https://doi.org/10.3390/catal3030646 - 2 Aug 2013
Cited by 12 | Viewed by 7761
Abstract
A 0.4 wt%Pt/Ce0.76Zr0.19Zn0.05O1.95 catalyst was prepared by the evaporative drying method. The catalytic toluene oxidation activity of the catalyst was investigated and the calcination temperature dependence on the toluene oxidation activity was characterized. It was confirmed [...] Read more.
A 0.4 wt%Pt/Ce0.76Zr0.19Zn0.05O1.95 catalyst was prepared by the evaporative drying method. The catalytic toluene oxidation activity of the catalyst was investigated and the calcination temperature dependence on the toluene oxidation activity was characterized. It was confirmed that only CO2 and steam were produced by the complete oxidation of toluene, and no toluene-derived compounds were detected as by-products with a gas chromatography-mass spectrometer. Toluene was completely oxidized at 320 °C on the 0.4 wt%Pt/Ce0.76Zr0.19Zn0.05O1.95 catalyst calcined at 500 °C. The toluene oxidation activity slightly decreased with increasing the calcination temperature of the catalyst. However, significant deactivation was not recognized in the present 0.4 wt%Pt/Ce0.76Zr0.19Zn0.05O1.95 catalyst, and toluene was completely oxidized at 360 °C even after calcination at 1000 °C. From these results, it became obvious that the 0.4 wt%Pt/Ce0.76Zr0.19Zn0.05O1.95 catalyst has high thermal stability for toluene oxidation activity. Full article
(This article belongs to the Special Issue Catalytic Combustion)
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720 KiB  
Article
Coating SiO2 Support with TiO2 or ZrO2 and Effects on Structure and CO Oxidation Performance of Pt Catalysts
by Mi-Young Kim, Jae-Soon Choi, Todd J. Toops, Eun-Suk Jeong, Sang-Wook Han, Viviane Schwartz and Jihua Chen
Catalysts 2013, 3(1), 88-103; https://doi.org/10.3390/catal3010088 - 6 Feb 2013
Cited by 40 | Viewed by 13496
Abstract
In this work, we studied how TiO2 and ZrO2 coatings enhance the CO oxidation performance of SiO2-supported Pt catalysts under conditions relevant to automotive emissions control. SiO2 was coated with metal oxides TiO2 or ZrO2 by [...] Read more.
In this work, we studied how TiO2 and ZrO2 coatings enhance the CO oxidation performance of SiO2-supported Pt catalysts under conditions relevant to automotive emissions control. SiO2 was coated with metal oxides TiO2 or ZrO2 by sol-gel method and the subsequent Pt loading was done by incipient wetness method. The prepared catalysts Pt/TiO2-SiO2 and Pt/ZrO2-SiO2 were compared with Pt/SiO2 and Pt/Al2O3 in fresh, sulfated, and hydrothermally aged states. The structure of the catalysts was characterized with BET, XRD, TEM, EDS, EXAFS, XANES, TPD and TPR to help interpret the CO oxidation performance. Higher dispersion, stability, and oxidation state of Pt were achieved on TiO2-SiO2 and ZrO2-SiO2 supports due to stronger metal-support interaction leading to superior CO oxidation performance compared to Pt/SiO2 and Pt/Al2O3. TiO2 and ZrO2 coatings introduced surface acidity but negligible basicity, which is a likely reason for the weak and low adsorption of SO2. The results suggest that the sol-gel coating of SiO2 with metal oxides could be an attractive strategy for designing automotive oxidation catalysts with enhanced performance such as low-temperature activity, sulfur tolerance, and hydrothermal stability. Full article
(This article belongs to the Special Issue Catalytic Combustion)
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Review

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2817 KiB  
Review
Mesoporous Silica Based Gold Catalysts: Novel Synthesis and Application in Catalytic Oxidation of CO and Volatile Organic Compounds (VOCs)
by Hongjing Wu, Giuseppe Pantaleo, Anna M. Venezia and Leonarda F. Liotta
Catalysts 2013, 3(4), 774-793; https://doi.org/10.3390/catal3040774 - 15 Oct 2013
Cited by 31 | Viewed by 10251
Abstract
Gold nanoparticles, particularly with the particle size of 2–5 nm, have attracted increasing research attention during the past decades due to their surprisingly high activity in CO and volatile organic compounds (VOCs) oxidation at low temperatures. In particular, CO oxidation below room temperature [...] Read more.
Gold nanoparticles, particularly with the particle size of 2–5 nm, have attracted increasing research attention during the past decades due to their surprisingly high activity in CO and volatile organic compounds (VOCs) oxidation at low temperatures. In particular, CO oxidation below room temperature has been extensively studied on gold nanoparticles supported on several oxides (TiO2, Fe2O3, CeO2, etc.). Recently, mesoporous silica materials (such as SBA-15, MCM-41, MCM-48 and HMS) possessing ordered channel structures and suitable pore diameters, large internal surface areas, thermal stabilities and excellent mechanical properties, have been investigated as suitable hosts for gold nanoparticles. In this review we highlight the development of novel mesoporous silica based gold catalysts based on examples, mostly from recently reported results. Several synthesis methods are described herein. In detail we report: the modification of silica with organic functional groups; the one-pot synthesis with the incorporation of both gold and coupling agent containing functionality for the synthesis of mesoporous silica; the use of cationic gold complexes; the synthesis of silica in the presence of gold colloids or the dispersion of gold colloids protected by ligands or polymers onto silica; the modification of silica by other metal oxides; other conventional preparation methods to form mesoporous silica based gold catalysts. The gold based catalysts prepared as such demonstrate good potential for use in oxidation of CO and VOCs at low temperatures. From the wide family of VOCs, the oxidation of methanol and dimethyldisulfide has been addressed in the present review. Full article
(This article belongs to the Special Issue Catalytic Combustion)
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491 KiB  
Review
Characterization of Active Sites/Entities and Redox/Catalytic Correlations in Copper-Ceria-Based Catalysts for Preferential Oxidation of CO in H2-Rich Streams
by Arturo Martínez-Arias, Daniel Gamarra, Ana B. Hungría, Marcos Fernández-García, Guillermo Munuera, Aitor Hornés, Parthasarathi Bera, José C. Conesa and Antonio López Cámara
Catalysts 2013, 3(2), 378-400; https://doi.org/10.3390/catal3020378 - 8 Apr 2013
Cited by 61 | Viewed by 9440
Abstract
This article reviews work done at authors’ laboratories about catalysts based on combinations between copper and ceria for preferential oxidation of CO in H2-rich streams (CO-PROX). The main focus of this review is the characterization of active sites for the process [...] Read more.
This article reviews work done at authors’ laboratories about catalysts based on combinations between copper and ceria for preferential oxidation of CO in H2-rich streams (CO-PROX). The main focus of this review is the characterization of active sites for the process on the basis of spectroscopic analysis of the systems under reaction conditions (operando techniques). On such a basis, it is exposed the state of the art in this field in connection with results obtained in other laboratories. Full article
(This article belongs to the Special Issue Catalytic Combustion)
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