Special Issue "Hybrid Metal/Metal Oxide-Carbon Nanomaterials Catalysts"

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

Deadline for manuscript submissions: 15 December 2019.

Special Issue Editors

Guest Editor
Dr. Agata Łamacz Website E-Mail
Division of Chemistry and Technology of Fuels, Wroclaw University of Science and Technology, Gdanska 7/9, 50-344 Wroclaw, Poland
Interests: heterogeneous catalysis; bifunctional catalysts; reforming; partial oxidation; deNOx; CO2 conversion; carbon nanomaterials; metal-organic frameworks
Guest Editor
Dr. Joaquín Silvestre-Albero Website E-Mail
Laboratorio de Materiales Avanzados, Departamento de Química Inorgánica-IUMA, Universidad de Alicante, Ctra. San Vicente-Alicante s/n, E-03690 San Vicente del Raspeig, Spain
Interests: activated Carbon materials; metal-organic frameworks; zeolites; gas adsorption; gas separation; heterogeneous catalysis; nanomaterials; biomedicine

Special Issue Information

Dear Colleagues,

In the last few decades, the scientific community has experienced the exciting progress in the area of heterogeneous catalysis which arises mainly from the development of new nanostructured materials that exhibit superior properties compared with traditional catalysts used, e.g. in fine chemicals synthesis, energy sector, and environmental protection. Carbon materials, such as carbon nanotubes (CNTs), carbon nanofibers (CNFs), graphene and its derivatives or activated carbons (ACs) have been found unique catalysts supports. These materials may reveal some catalytic performance but usually are modified by anchoring the metals or metals oxides to form hybrids that combine the distinctive properties of both phases. Recently, carbonized nanoparticles that are derived from nanoscale metal-organic frameworks (MOFs) have been found suitable catalysts e.g. in the oxygen reduction reaction (ORR).

The present Special Issue aims to cover recent research progress in the field of synthesis, characterization and the extensive catalytic applications of hybrid materials composed of carbon support (CNTs, CNFs, graphene, activated carbons, and MOF-derived carbons) and metal or metal oxide active phase. Submissions to this Special Issue are welcome in the form of original research papers or short reviews that reflect state of the art in the above-mentioned topics, concerning application of metals/metals oxides–nanocarbons hybrids in thermal catalysis, photocatalysis, electrocatalysis, photoelectrocatalysis, biocatalysis, etc.

Dr. Agata Łamacz
Dr. Joaquín Silvestre-Albero
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

  • Carbon nanotubes
  • Carbon nanofibers
  • Graphene, graphene oxide, reduced graphene oxide
  • Activated carbon
  • Metal-organic frameworks
  • Nanostructured functional materials
  • Physicochemical characterizations
  • Metal-support interaction
  • Heterogeneous catalysis
  • Photocatalysis
  • Electrocatalysis

Published Papers

This special issue is now open for submission, see below for planned papers.

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: Cobalt Supported on Reduced Graphene Oxide as Catalyst for Ethylene Hydroformylation

Authors: Jianli Chang, Xiaojun Lu, Xinying Liu

Abstract: Hydroformylation, or oxo synthesis, that was discovered by the German scientist Otto Roelen in 1938, is an important process for production of aldehydes. Aldehydes are useful intermediates in the production of valuable products such as alcohols, carboxylic acids, amines, and diols. More recently, hydroformylation is also widely applied in the fine chemicals and pharmaceutical industry for the production of drugs, vitamins, herbicides and perfumes. Commercially, homogeneous Co or Rh complexes are typically applied at temperatures ranging from as low as 360 K up to 573 K. The homogeneous character of industrial process configurations leads to inherent operational problems such as difficulties in catalyst separation from products, expensive metal losses and corrosivity of catalytic solutions. The successful implementation of an active and stable heterogeneous hydroformylation catalyst would allow avoiding these drawbacks.[1] A 20%Co/rGO catalyst was prepared for the hydroformylation of ethylene with syngas. The graphene oxide was synthesized by a modified Hummer`s method. 20%Co was loaded on graphene oxide and reduced by hydrazine hydrate using a hydrothermal method. The catalysis performance was tested in a fixed bed reactor under 2 MPa at different temperature with different compositions of feed gas. 20%Co/rGO is a promising catalyst for ethylene hydroformylation, which showed high selectivity to C3 oxygenates. Through adjusting the ratio of hydrogen in the feed-gas can change the selectivity of hydroformylation. The lower ratio of hydrogen, the higher selectivity of propionaldehyde. The highest C3 oxygenates selectivity was obtained at the ratio: CO:C2H4:H2 = 1:1:0.4.

Keywords: Cobalt catalyst, Reduced Graphene Oxide, Ethylene Hydroformylation, Syngas

Title: Cobalt Supported on Reduced Graphene Oxide as Catalyst for the Synthesis of Higher Alcohols from Syngas

Authors: Jianli Chang, Yusheng Zhang, Yali Yao, Xinying Liu

Abstract:  The Higher alcohols, derived from coal or biomass via syngas, have been considered as clean, sustainable and transportable fuel alternatives. But the challenge for higher alcohols synthesis is to develop a catalyst with qualified performance, and the catalytic conversion from syngas to higher alcohols is considered to be the most efficient way for producing C2+ alcohols (alcohols with two or more than two carbon atoms in one molecule), to be used as fuel additives, gasoline blends and alternative transportation fuel [1]. The Cobalt supported on graphene catalysts were prepared for the synthesis of higher alcohols. The graphene oxide was synthesized by a modified Hummer`s method. Then Cobalt were loaded on graphene oxide and reduced by hydrazine hydrate using a hydrothermal method. After calcination at 400℃ for 5h, the catalysts were characterized by SEM, H-TPR, XRD and TGA. The catalysis performance was tested in a fixed bed reactor at different temperature and different GHSV. The catalyst showed a significant high selectivity to alcohols, which is showing the Cobalt/graphene is a promising catalyst for the synthesis of higher alcohols via syngas.

Keywords: Cobalt catalyst, Reduced Graphene Oxide, Higher alcohols synthesis, Syngas

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