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New Strategies for Metal Catalysis in Heterogeneous System

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Inorganic Chemistry".

Deadline for manuscript submissions: 31 July 2024 | Viewed by 489

Special Issue Editor


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Guest Editor
Green Catalytic Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
Interests: C1 chemistry; catalytic hydrogenation; chemical engineering; electro catalysis

Special Issue Information

Dear Colleagues,

Active metal is a key component of the heterogeneous catalyst. The particle size and chemical state of the active sites play the remarkable role in reaction performance, including conversion, selectivity and stability. Recently, a series of strategies have been developed to regulate the metal catalysts, and a series of the novel catalysts have been emerged, such as single atom, cluster and nanoparticle catalysts. Simultaneously, it is crucial to discuss the metal-support interaction and support effects on active metal size distribution and chemical state. Additionally, in-situ characterization techniques are needed to unravel the influences of the catalyst structure and surface properties on reaction performance, as well as the reaction mechanism. This Special Issue will highlight the deep insights into the new strategies to design the efficient and robust metal catalysts in heterogeneous system and the topics on the advanced techniques to decipher the structure-activity relationship are also included.

Dr. Meng Zhang
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. Molecules is an international peer-reviewed open access semimonthly 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 2700 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

  • single atom catalyst
  • metal-support interaction
  • preparation method
  • in-situ characterization technique
  • support effect
  • reaction mechanism
  • structure-activity relationship

Published Papers (1 paper)

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Research

20 pages, 6236 KiB  
Article
Dry Reforming of Methane over Pyrochlore-Type La2Ce2O7-Supported Ni Catalyst: Effect of Particle Size of Support
by Zeling Zhou, Chao Li, Junfeng Zhang, Qiliang Gao, Jiahao Wang, Qingde Zhang and Yizhuo Han
Molecules 2024, 29(8), 1871; https://doi.org/10.3390/molecules29081871 - 19 Apr 2024
Viewed by 261
Abstract
The properties of supports (such as oxygen vacancies, oxygen species properties, etc.) significantly impact the anti-carbon ability due to their promotional effect on the activation of CO2 in dry reforming of methane (DRM). Herein, pyrochlore-type La2Ce2O7 compounds [...] Read more.
The properties of supports (such as oxygen vacancies, oxygen species properties, etc.) significantly impact the anti-carbon ability due to their promotional effect on the activation of CO2 in dry reforming of methane (DRM). Herein, pyrochlore-type La2Ce2O7 compounds prepared using co-precipitation (CP), glycine nitrate combustion (GNC) and sol–gel (S-G) methods, which have highly thermal stability and unique oxygen mobility, are applied as supports to prepare Ni-based catalysts for DRM. The effect of the calcining temperature (500, 600 and 700 °C) on La2Ce2O7(CP) has also been investigated. Based on multi-technique characterizations, it is found that the synthesis method and calcination temperature can influence the particle size of the La2Ce2O7 support. Changes in particle size strongly modulate the pore volume, specific surface area and numbers of surface oxygen vacancies of the La2Ce2O7 support. As a result, the distribution of supported Ni components is affected due to the different metal–support interaction, thereby altering the activity of the catalysts for cracking CH4. Moreover, the supports’ abilities to adsorb and activate CO2 are also adjusted accordingly, accelerating the removal of the carbon deposited on the catalysts. Finally, La2Ce2O7(CP 600) with an appropriate particle size exhibits the best catalytic activity and stability in DRM. Full article
(This article belongs to the Special Issue New Strategies for Metal Catalysis in Heterogeneous System)
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