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Molecular Simulation and Applied Catalysis in CO2 Utilization

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

Deadline for manuscript submissions: closed (31 October 2024) | Viewed by 1533

Special Issue Editor

College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314000, China
Interests: CO2 capture; CO2 utilization; double layered hydroxide; Ionic liquids; biomass resource utilization

Special Issue Information

Dear Colleagues,

The issue of extreme climate caused by greenhouse gas emissions, particularly CO2, has become a global challenge that requires concerted efforts to address. One effective strategy to mitigate excessive CO2 emissions is through the capture and utilization of CO2 resources. Metal–organic frameworks (MOFs), covalent–organic frameworks (COFs), and two-dimensional (2D) materials, such as graphene, are excellent candidates for CO2 capture and utilization. While significant progress has been made in academic research to enable efficient CO2 capture and utilization, industrial applications have yet to catch up. In the current uncertain climate regarding material modification, molecular simulation techniques based on density functional theory have opened new avenues for research in the development of innovative CO2-capture and -utilization materials. These techniques provide an effective way to identify the catalytic limitations of existing materials and to create new materials through experimental investigations that overcome these limitations. This Special Issue focuses on articles that employ a combined approach of molecular simulation and experimental development to design new CO2-capture and -utilization materials and explore their applications. Both original research papers and review articles are welcome.

Dr. Ning Ai
Guest Editor

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Keywords

  • CO2 capture
  • CO2 utilization
  • molecular simulation
  • applied catalysis
  • catalyst design

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Published Papers (1 paper)

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Research

17 pages, 4872 KiB  
Article
Mechanistic Study on the Possibility of Converting Dissociated Oxygen into Formic Acid on χ-Fe5C2(510) for Resource Recovery in Fischer–Tropsch Synthesis
by Ning Ai, Changyi Lai, Wanpeng Hu, Qining Wang and Jie Ren
Molecules 2023, 28(24), 8117; https://doi.org/10.3390/molecules28248117 - 15 Dec 2023
Cited by 1 | Viewed by 1155
Abstract
During Fischer–Tropsch synthesis, O atoms are dissociated on the surface of Fe-based catalysts. However, most of the dissociated O would be removed as H2O or CO2, which results in a low atom economy. Hence, a comprehensive study of the [...] Read more.
During Fischer–Tropsch synthesis, O atoms are dissociated on the surface of Fe-based catalysts. However, most of the dissociated O would be removed as H2O or CO2, which results in a low atom economy. Hence, a comprehensive study of the O removal pathway as formic acid has been investigated using the combination of density functional theory (DFT) and kinetic Monte Carlo (kMC) to improve the economics of Fischer–Tropsch synthesis on Fe-based catalysts. The results show that the optimal pathway for the removal of dissociated O as formic acid is the OH pathway, of which the effective barrier energy (0.936 eV) is close to that of the CO activation pathway (0.730 eV), meaning that the removal of dissociated O as formic acid is possible. The main factor in an inability to form formic acid is the competition between the formic acid formation pathway and other oxygenated compound formation pathways (H2O, CO2, methanol-formaldehyde); the details are as follows: 1. If the CO is hydrogenated first, then the subsequent reaction would be impossible due to its high effective Gibbs barrier energy. 2. If CO reacts first with O to become CO2, it is difficult for it to be hydrogenated further to become HCOOH because of the low adsorption energy of CO2. 3. When the CO + OH pathway is considered, OH would react easily with H atoms to form H2O due to the hydrogen coverage effect. Finally, the removal of dissociated O to formic acid is proposed via improving the catalyst to increase the CO2 adsorption energy or CO coverage. Full article
(This article belongs to the Special Issue Molecular Simulation and Applied Catalysis in CO2 Utilization)
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