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Catalysts
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Catalysis for Energy Transformation Reactions
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Catalysis for Energy Transformation Reactions

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

Deadline for manuscript submissions: closed (15 February 2024) | Viewed by 2083

Special Issue Editors

Dr. Yuming Li

E-Mail Website
Guest Editor
State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, China
Interests: electrocatalysis; light alkane conversion; zeolite
Prof. Dr. Huimin Liu

E-Mail Website
Guest Editor
School of Chemical and Environmental Engineering, Liaoning University of Technology, Jinzhou 121001, China
Interests: photocatalysis; CO2 conversion; energy transformation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

After the first successful Special Issue focused on photocatalysis for energy transformation, available here, we propose the second edition, titled “Catalysis for Energy Transformation Reactions”.

This Special Issue focuses on catalysis applications in a series of energy transformation reactions, including the activation of small molecules, the decontamination of wastewater, hydrogen production via water splitting, the reduction of carbon dioxide to hydrocarbon, fine chemical synthesis, and other energy transformation reactions. It discusses the fundamental aspects of all applications, as well as their proper mechanisms, thus providing essential information for extensive research in clean environment and green energy production.

Dr. Yuming Li
Prof. Dr. Huimin Liu
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 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 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

  • catalysis
  • the activation of small molecules
  • water splitting
  • fine chemical synthesis
  • energy transformation reactions

Published Papers (2 papers)

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Research

15 pages, 3604 KiB  
Article
Aerosol-Assisted Synthesis of Sn–Si Composite Oxide Microspheres with the Hollow Mesoporous Structure for Baeyer–Villiger Oxidation
by Qingrun Meng, Xiaoxu Gao, Ting Sun, Yu Guo and Huimin Liu
Catalysts 2023, 13(12), 1460; https://doi.org/10.3390/catal13121460 - 22 Nov 2023
Viewed by 938
Abstract
Tetravalent Sn species, such as zeolite or oxide, possess Lewis acidic properties, and thus exhibit prominent catalytic performance in several reactions when they are incorporated into the silica framework. Unfortunately, the synthesis of Sn-based zeolite (Sn–Beta) usually suffers from several drawbacks, including a [...] Read more.
Tetravalent Sn species, such as zeolite or oxide, possess Lewis acidic properties, and thus exhibit prominent catalytic performance in several reactions when they are incorporated into the silica framework. Unfortunately, the synthesis of Sn-based zeolite (Sn–Beta) usually suffers from several drawbacks, including a long crystallization time, limited framework Sn content and complex synthesis steps. Sn-based composite oxides are favored in the industry, due to their simple synthesis steps and easy control of their pore structure, morphology and Sn content. In this work, an aerosol-assisted method is used to prepare Sn–Si composite oxide microspheres, using CTAB as template. The method is based on the formation of aerosol from a solution of Sn, Si precursors and a template (CTAB). The introduction of CTAB causes the surface tension of the atomized droplets to decrease. During the fast drying of the droplets, the Sn–Si composite oxide microspheres with a concave hollow morphology were first formed. After calcination, calibrated mesopores of 2.3 nm were also formed, with a specific surface area of 1260 m2/g and a mesopores ratio of 0.84. Sn species are incorporated in the silica network, mainly in the form of single sites. The resulting material proved to exhibit high catalytic performances in the Baeyer–Villiger oxidation of 2-adamantanone by using H2O2 as green oxidant, which was mainly attributed to the enhancement of the access to the catalytic tin sites through both the continuous hollow and mesopore channels, which have a 52% conversion of 2-adamantanone after 3 h of reaction. This method is simple, convenient, cheap and can be continuously produced, meaning it has broad potential for industrial application. Full article
(This article belongs to the Special Issue Catalysis for Energy Transformation Reactions)
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18 pages, 5727 KiB  
Article
Construction of Supported MnOx/MgAl Hydrotalcite Catalysts and Their Highly Efficient Catalytic Performance for Low-Temperature Formaldehyde Removal
by Xiankun Yu, Qi Sun, Jingchen Tian, Jie Wan, Yanjun Liu, Xiaoli Wang, Jianfei Kan, Xiaojun Yang and Gongde Wu
Catalysts 2023, 13(9), 1283; https://doi.org/10.3390/catal13091283 - 7 Sep 2023
Viewed by 819
Abstract
A series of supported MnOx/MgAl-layered double hydroxide (LDH) catalysts were prepared by hydrothermal co-precipitation to investigate their catalytic performances for low-temperature formaldehyde oxidation reactions. Activity tests show that the 10Mn/Mg3Al1-LDH catalyst exhibits higher efficiency for low-temperature formaldehyde [...] Read more.
A series of supported MnOx/MgAl-layered double hydroxide (LDH) catalysts were prepared by hydrothermal co-precipitation to investigate their catalytic performances for low-temperature formaldehyde oxidation reactions. Activity tests show that the 10Mn/Mg3Al1-LDH catalyst exhibits higher efficiency for low-temperature formaldehyde oxidation with a high CO2 yield. It also shows remarkable long-term operational stability as well as good adaptability to different velocities and humidities. Various characterizations were carried out to establish the possible structure–activity correlations. The results show that there were a large number of hydroxyl groups in the 10Mn/MgAl-LDH catalysts, and the hydroxyl groups were positively correlated with Mg2+ content. The outstanding catalytic performance of 10Mn/Mg3Al1-LDH can be attributed to abundant surface hydroxyl groups, surface adsorbed oxygen and higher Mn4+/Mn3+ ratios. Through in situ Fourier-transform infrared spectroscopy (in situ FTIR), it was revealed that formaldehyde was gradually converted into CO2 and water with dioxymethylene (DOM), formate and carbonate as the major intermediates under the action of both active oxygen and active hydroxyl groups. The active oxygen and active hydroxyl groups consumed in the process are continuously replenished by the effective reaction between the oxygen molecules in the air and the active site of the catalyst. The low-temperature asynchronous conversion of formaldehyde results in the accumulation of some intermediates on the catalyst surface covering the active center, which induces catalyst deactivation. Full article
(This article belongs to the Special Issue Catalysis for Energy Transformation Reactions)
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