Special Issue "Green Catalysts based on Metal Complexs"

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Crystalline Materials".

Deadline for manuscript submissions: closed (1 May 2019).

Special Issue Editor

Guest Editor
Prof. Dr. Luísa Margarida Martins

Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
Website | E-Mail
Interests: coordination chemistry; functionalized materials; C-scorpionate-based catalysts; sustainable catalytic systems; homogeneous and supported catalysis; nanocatalysis; molecular electrochemistry

Special Issue Information

Dear Colleagues,

Chemical synthesis applying green chemistry principles addresses the future challenges of working with chemical processes and products by exploring novel reactions that can maximize the desired products and minimize by-products, designing new materials and catalytic routes that can simplify operations in chemical transformations, and seeking greener operating conditions.

This Special Issue is aimed at covering novel, emerging and promising strategies for the development of new metal-complex-based catalysts and of improved sustainable catalytic processes by using such catalysts based on metal complexes. In the development of new catalysts and catalytic methods discussions of the fundamental issues of sustainability, efficiency and selectivity are also very welcome.

Submissions to this Special Issue on “Green Catalysts Based on Metal Complexes” are very welcome in the form of original research papers or short reviews that reflect the state of research in the field.

The potential topics include, but are not limited to:

  • Homogeneous catalysis
  • Supported catalysis
  • Metal-complex-based catalysts
  • Catalysis in non-conventional conditions
  • Catalysis in aqueous media
  • Electro- or photo-catalysis
  • Asymmetric catalysis
  • Bio-inspired catalysis
  • Cooperative catalysis

Prof. Luísa Margarida Martins
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 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. Crystals 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 1400 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.

Published Papers (1 paper)

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Research

Open AccessArticle
Acid Modification of the Unsupported NiMo Catalysts by Y-Zeolite Nanoclusters
Crystals 2019, 9(7), 344; https://doi.org/10.3390/cryst9070344
Received: 7 May 2019 / Revised: 23 June 2019 / Accepted: 2 July 2019 / Published: 4 July 2019
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Abstract
Unsupported NiMo catalyst has high hydrogenation activity due to its high active site distribution. However, low specific surface area and pore distribution greatly limit the efficient utilization of the active components. The Y-zeolite nanoclusters were hydrothermally synthesized and introduced into the unsupported NiMo [...] Read more.
Unsupported NiMo catalyst has high hydrogenation activity due to its high active site distribution. However, low specific surface area and pore distribution greatly limit the efficient utilization of the active components. The Y-zeolite nanoclusters were hydrothermally synthesized and introduced into the unsupported NiMo catalysts from a layered nickel molybdate complex oxide. The XRD, N2 adsorption-desorption, FT-IR, Py-IR, SEM, NH3-TPD, and TEM were used to characterize all catalysts. The dibenzothiophene (DBT) hydrodesulfurization (HDS) reaction was performed in a continuous high pressure microreactor. The results showed that the specific surface area, pore volume, and average pore size of the unsupported NiMo catalysts were greatly increased by the Y-zeolite nanoclusters, and a more dispersed structure was produced. Furthermore, the Lewis acid and total acid content of the unsupported NiMo catalysts were greatly improved by the Y-zeolite nanoclusters. The HDS results showed that the unsupported NiMo catalysts modified by the nanoclusters had the same high desulfurization efficiency as the unmodified catalyst, but had more proportion of direct desulfurization (DDS) products. The results offer an alternative to reducing hydrogen consumption and save cost in the production of ultra clean diesel. Full article
(This article belongs to the Special Issue Green Catalysts based on Metal Complexs)
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