Article
Engineering, Chemical
Juncong Zou, Yan Lin, Shaohua Wu, Mengjie Wu, Chunping Yang
Summary: The developed catalyst Mo/KIT-6-Ti shows excellent oxidative desulfurization performance, achieving efficient conversion of sulfides without the need for organic solvents, demonstrating great potential for practical fuel applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Ardian Nurwita, Maciej Trejda
Summary: The source of Bronsted acid centers, generated on two different mesoporous silica supports, was investigated for their application in the oxidative desulfurization of dibenzothiophene. The TPS/MCF catalyst showed excellent activity and stability under mild reaction conditions, making it a promising candidate for future applications.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Nanoscience & Nanotechnology
Yu Liu, Jiabao Bai, Ya Song, Huawei Yang, Lixia Yang, Liangjiu Bai, Donglei Wei, Wenxiang Wang, Xinxiang Cao, Ying Liang, Hou Chen
Summary: Iron-intercalated molybdenum oxides nanobelts have been reported as a durable and robust catalyst for aerobic oxidative desulfurization, catalyzing the reaction efficiently at 80 degrees C by precisely modulating the electronic structure to increase surface oxygen vacancy density. The optimized doping amount enables the catalyst with excellent catalytic performance through thorough conversion of various sulfides, making it a candidate for sustainable fuel desulfurization. The strategy demonstrated here provides practical guidance for the rational design and optimization of Mo-based catalysts to promote aerobic oxidation reactions.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Applied
Lei Chen, Zhong-Pan Hu, Jin-Tao Ren, Zheng Wang, Zhong-Yong Yuan
Summary: Mesoporous titanium phosphonates (MTP) were synthesized as support for molybdenum oxides in oxidative desulfurization (ODS) reactions. The electron-donating effect of organophosphonate ligands on Mo active sites led to high electron density, improving the efficiency and stability of ODS reactions.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Applied
Nushin Ettekali, Somaiyeh Allahyari, Nader Rahemi, Fahime Abedini
Summary: Micro-mesoporous SiO2 aerogel supported by MoO3 nanoparticles was used as a catalyst and adsorbent for the oxidation of dibenzothiophene (DBT), leading to enhanced catalytic activity and successful desulfurization of Iranian gasoil with noticeable reduction in sulfur-containing components. The characterization of the catalysts indicated uniform dispersion of MoO3 nanoparticles on the aerogel surface, with maintained crystalline structure despite decreased porosity in spent catalyst due to adsorption of DBT sulfones.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Physical
Armin Raeisi, Alireza Najafi Chermahini, Marzieh Esmaeilzadeh Khabazi, Mohamad Mohsen Momeni, Rafael Luque, Antonio Pineda, Enrique Rodriguez Castellon, Carolina Vargas Fernandez
Summary: This investigation successfully removes sulfur-based compounds by a combination of absorptive and oxidative desulfurization processes using a series of novel Bi-based bifunctional photo electrocatalysts. The results showed that the catalysts had higher efficiency in absorptive desulfurization and better results in oxidative desulfurization. Among the catalysts, photoelectrocatalytic desulfurization performed best in dibenzothiophene removal.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Environmental Sciences
Xinsheng Li, Shuo Ai, Yongchun Huang, Chengdu Huang, Wanguo Yu, Zhijuan Mao
Summary: In this study, metallic copper loaded on SBA-15 mesoporous silica proved to be an efficient adsorbent for the removal of DBT in fuel oils. Analysis using Raman spectroscopy, XPS, and Auger spectroscopy provided insights into the interaction mechanism between DBT and copper, and the complete recovery of adsorption capacity was achieved successfully.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Marcia A. C. D. Nunes, Klaus Krambrock, Eudes Lorencon
Summary: The catalytic activity of molybdenum trioxide nanobelts (MoNB) in oxidative desulfurization of dibenzothiophene was investigated. The MoNB was produced by simple hydrothermal treatment of MoO2(acac)(2) aqueous solution without further use of surfactants or templates. The material was characterized by various analytical techniques, revealing the surface Mo(VI) sites of MoNB that interacted with H2O2, forming reactive peroxo-Mo(VI) groups. Under mild reaction conditions, MoNB showed high efficiency for oxidative desulfurization of DBT and could be recycled five times without significant loss of activity, making it a promising alternative for reactions complementary to traditional hydrodesulfurization.
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Inorganic & Nuclear
Josefa Ortiz-Bustos, Helena Perez del Pulgar, Yolanda Perez, Isabel del Hierro
Summary: Polyoxometalate (POM) mesoporous silica-based materials with hydrophilic and hydrophobic properties have been designed as powerful heterogeneous catalysts in oxidative desulfurization (ODS) by adsorbing both H2O2 and sulphur-containing compounds simultaneously. The formation of charge transfer salts and the masking of silanol groups on the silica surface influence the catalysts' interactions and enhance the adsorption properties of non-polar dibenzothiophene (DBT). An extensive characterization of the materials has been performed using spectroscopy and electrochemical techniques to understand POM-surface and POM-POM anion interactions.
DALTON TRANSACTIONS
(2023)
Article
Energy & Fuels
Ze Fang, Zhiguo Zhao, Nan Li, Zhexin Zhu, Wangyang Lu, Fengtao Chen, Wenxing Chen
Summary: An environmentally friendly desulfurization technology was developed using a biomimetic catalytic system, ethanol and water solvent, achieving a high removal rate of dibenzothiophene. The research provides a new idea for the design of efficient, energy-saving, and environmentally friendly desulfurization systems.
Article
Chemistry, Applied
Mohammad Hossein Farghadani, Vahid Mahdavi
Summary: This study successfully prepared a novel and effective bifunctional heterogeneous catalytic system for the desulfurization process by synthesizing nanorod-OMS-2 and molybdenum oxide catalysts. By controlling the composition and structure of the catalysts, highly dispersed molybdenum oxide species and strong acidic sites were achieved, resulting in improved catalytic activity and stability. The kinetics of the desulfurization reaction and the optimum conditions were investigated, providing a basis for further optimization of catalyst design.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Applied
Yue Du, Wenxue Chen, Zhiyi Zhong, Lina Zhou, Yisi Liu, Lun Yang, Dongbin Xiong, Kai Wang
Summary: The preparation of a 3D meso/macroporous Mo/ZrO2 composite derived from an ionic liquid using a dual-template self-assembling process has shown promising results in the production of sulfur-free diesel fuel.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Engineering, Environmental
Behzad Moeinifard, Alireza Najafi Chermahini
Summary: This study investigated sulfur oxidation of refractory organosulfur compounds supported on graphitic carbon nitride using a novel catalyst comprising monolacunary phosphomolybdate (PMo11). The optimized reaction conditions and the superiority of this catalytic system were demonstrated by achieving high conversion of DBT in model fuel and significant sulfur removal from real fuel.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Materials Science, Ceramics
Josefa Ortiz-Bustos, Isabel del Hierro, Yolanda Perez
Summary: The incorporation of iron and sulphate ions on TiO2 nanoparticles improved the catalytic performance, and a multifunctional and visible-light active photocatalyst was designed to remove pollutants from transportation fuels and water. Doping with a low amount of iron enhanced the photocatalytic performance, with the 1.2%S-0.5%Fe-TiO2 photocatalyst showing the highest activity under visible light irradiation. The improved electron charge transfer behavior of this photocatalyst was confirmed by electrochemistry measurements, and the stability and recyclability of the best photocatalyst were evaluated.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Environmental
Guangxue Yang, Fan Feng, Yutong Luo, Jiaheng Qin, Fei Yuan, Shuo Wang, Shicheng Luo, Jiantai Ma
Summary: A novel NDs-supported MoO3/SiO2 HN nanocomposite with efficient catalytic oxidation desulfurization performance has been successfully fabricated through a green and environmentally friendly route, showing great potential for practical applications as a new type of nanocatalyst.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
