Article
Engineering, Chemical
Si-Wen Li, Hai-Yan Zhang, Tian-Hao Han, Wen-Qi Wu, Wei Wang, Jian-She Zhao
Summary: A new type of FeMP catalyst with spinosus structure and sharp surface has been developed, with FeCrP showing higher desulfurization performance, maintaining high catalytic activity even after multiple uses, demonstrating good value in actual industrial applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Energy & Fuels
Guang Miao, Peng Chong, Cuiting Yang, Zewei Liu, Hao Yu, Lei Dong, Guoqing Li, Jing Xiao
Summary: This study reports the catalytic upgrading of thiophenic sulfur compounds over a silver-modified MoO3 catalyst under ambient conditions. The conversion of thiophenic compounds to bromides using Br-2 and H2O2/HBr achieved high conversion rates and selectivity.
Article
Chemistry, Applied
S. Houda, C. Lancelot, P. Blanchard, L. Poinel, C. Lamonier
Summary: The study demonstrated the efficiency of oxidative desulfurization (ODS) on marine fuels using H2O2 as the oxidizing agent with a low oxidant to sulfur ratio for economic and environmental reasons. Ultrasound assisted ODS (UAOD) was found to enhance conversions and sulfur removal significantly, especially for fuels with lower viscosity, showing great potential for industrial applications.
Article
Chemistry, Physical
Rita N. Sales, Carla D. Nunes
Summary: Desulfurization is crucial for eliminating sulfur compounds from fuel feedstocks, and MoO3 nanoparticles synthesized through hydrothermal method have shown to be efficient catalysts for oxidative desulfurization. The catalyst demonstrated enhanced activity and selectivity in the desulfurization process, with temperature and solvent influencing the conversion rate. The catalytic performance of MoO3 nanomaterial was comparable or superior to other catalysts reported in literature.
Article
Chemistry, Applied
Cheng Wang, Ai-Rong Li, Yu-Ling Ma
Summary: The study synthesized a composite material of HPMo@UiO-66 and systematically characterized its superior oxidative desulfurization performance. The catalyst 0.5-HPMo@UiO-66-D with defects exhibited the best activity and high reusability.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Engineering, Environmental
Zhanjun Zhang, Liyuan Wen, Siying Liao, Xingye Zeng, Rujin Zhou, Ying Zeng
Summary: In this study, controllable synthesis of Bi2O3-MoO3 binary metal composite oxides with different crystalline phases (alpha, beta, and gamma) was achieved, where the gamma-Bi2MoO6 catalyst showed higher catalytic activity and deep oxidation ability for various sulfur compounds. It can be recycled multiple times and the oxidation process follows a first-order kinetic equation with a reaction activation energy of 51.05 kJ/mol.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Applied
Chang Deng, Haonan Zhu, Yan Huang, Hui Liu, Penghui Liu, Peng Cui, Yanhong Chao, Jixing Liu, Renjie Wang, Peiwen Wu, Wenshuai Zhu
Summary: A magnetic response catalyst, HEO-1100, with a high entropy structure was developed for ultra-deep oxidative desulfurization of diesel. The HEO-1100 catalyst showed significantly enhanced catalytic performance due to its electron-deficient structure and high dispersion of active sites, and it could retain magnetism even at high temperatures, allowing for easy separation and recycling.
Article
Chemistry, Physical
Siamak Salehian, Afsanehsadat Larimi, Ali Akbar Asgharinezhad, Navid Khallaghi, Tohid N. Borhani, Cyrus Ghotbi
Summary: Photocatalytic oxidative desulfurization (PODS) under visible light was successfully achieved using bismuth molybdate-modified magnetic composites. The composite exhibited high efficiency and recyclability, making it a promising catalyst for desulfurization.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Applied
Alexandre M. Viana, Diana Juliao, Fatima Mirante, Rui G. Faria, Baltazar de Castro, Salete S. Balula, Luis Cunha-Silva
Summary: A novel chloride activation method was developed to enhance the catalytic activity of UiO-66(Zr) and UiO-66(Hf) materials in oxidative desulfurization reactions. The activation treatment significantly improved the catalytic performance of the materials, even after multiple reaction cycles, without structural degradation of the catalyst. This cost-effective method shows promise for efficiently activating catalytic MOF materials and expanding their catalytic applications.
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
Energy & Fuels
Shuaishuai Zhou, Jing He, Peiwen Wu, Lianwen He, Duanjian Tao, Linjie Lu, Zhendong Yu, Linhua Zhu, Yanhong Chao, Wenshuai Zhu
Summary: Encapsulating phosphomolybdic acid into a metal-organic framework improves the stability and activity of the oxidative desulfurization catalyst, showing excellent performance in treating the most stubborn sulfides in fuel oil. The catalyst can be recycled multiple times and the oxidizing product can be well separated, indicating promising potential for real diesel desulfurization.
Article
Chemistry, Applied
Hossein Kargar, Mahboube Ghahramaninezhad, Mahdi Niknam Shahrak, Salete S. Balula
Summary: The research on Fe3O4/ZIF-8/TiO2 composite catalyst demonstrates its efficiency, stability, and easy recovery in oxidative desulfurization process, providing important insights for future industrial applications.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
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)
Article
Chemistry, Physical
Maryam Afsharpour, Bahador Kazemi
Summary: Doped graphene was synthesized using Arabic gum as a precursor, leading to the embedding of tungsten species in the graphene matrix. Tungsten forms carbide with adjacent carbons, enhancing sulfur removal in oxidative desulfurization. The catalyst was modified with molybdenum oxide, resulting in higher catalytic activity compared to the W-doped graphene. This catalyst shows promising potential in efficiently removing high sulfur concentration with a low amount of catalyst.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Engineering, Chemical
Maryam Afsharpour, Leila Seifikar Gomi, Mehdi Elyasi
Summary: A green procedure was developed to synthesize novel N-doped bio-graphenes from Arabic gum using different N-dopants and Gelatin as carbon source. The nitrogen-doped graphenes exhibited enhanced catalytic activity for oxidative removal of sulfur compounds in fuel oil, with the graphene doped with hexamethylenetetramine showing the highest catalytic activity due to its nitrogen species, nitrogen content, and surface area.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Ming-Yi Chen, Ngoc Thanh Thuy Tran, Ahmed Abubakar Alao, Wen-Dung Hsu
Summary: This study demonstrates the significance of surface Pt atom arrangement for the efficiency of ORR in PEMFCs and reveals the correlation between Pt-Pt average distance and O2 dissociation barrier. Furthermore, the study discovers a robust correlation between the level of the catalyst's d-band center and O2 adsorption energy. High-entropy alloy substrates provide potential for controlling Pt arrangement and O2 dissociation barrier.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Eduardo C. Atayde Jr, Babasaheb M. Matsagar, Yu-Cheng Wang, Kevin C. -W. Wu
Summary: This study presents the first application of an acidic MOF, Sulfated MOF-808, in catalyzing the HAA reactions of furan oligomers for the production of biofuel precursors. The catalyst showed high yield, selectivity, and recyclability, making it versatile for different starting materials.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Maria do Carmo Rangel, Francieli Martins Mayer, Soraia Jesus de Oliveira, Sergio Gustavo Marchetti, Fabricio Luiz Faita, Doris Ruiz, Giovanni Saboia, Mariana Kieling Dagostini, Jonder Morais, Maria do Carmo Martins Alves
Summary: This study developed a new catalyst by investigating the effect of magnesium on the catalytic properties of hematite in ethylbenzene dehydrogenation. The catalyst showed important differences in activity, selectivity, and stability, making it a promising candidate for commercial applications.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yanjun Li, Qian Wang, Hui Tian, Mingyuan Zhu, Yuanyuan Liu
Summary: A novel strategy using microwave-assisted precipitation was proposed to prepare defective CsH3PMo11VO40 catalyst for the oxidation of methacrolein to methacrylic acid. Microwave treatment accelerates crystallization, increases vanadyl species content, and forms defective Keggin structures, thereby enhancing the oxidation capacity of the catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Rajeshwari Athavale, Sailee Gardi, Fatima Choudhary, Dayanand Patil, Nandkishor Chandan, Paresh More
Summary: In this study, a novel acidic ionic liquid catalyst was prepared and used for the synthesis of bis-indolyl methane derivatives. The catalyst exhibited short reaction times, easy purification, and reusability.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Masatomo Hattori, Takato Hattori, Masakuni Ozawa
Summary: Cu-added gamma-Al2O3 catalysts were prepared with varying Cu loadings and the effects of copper oxidation states on catalytic activity were investigated. The results showed that the addition of copper increased the catalyst activity, but excessive copper loading decreased catalytic activity. XRD and TEM analysis indicated the formation of a solid solution of copper oxide species on the surface of gamma-Al2O3. XAS and TPR data demonstrated variations in copper oxidation states among the catalysts.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liwei Fang, Shiyang Niu, Shengsen Wang, Yiqing Lu, Yuanhui Cheng
Summary: In this study, PtNi alloy on nitrogen-doped carbon and SnO2 dual-support was designed to modulate the metal-support interaction, resulting in improved catalytic activity and stability for oxygen reduction reaction. The SnO2/PtNi/NC catalyst exhibited a strongly coupled interface, enhanced electron transfer, and higher half-wave potential compared to PtNi/NC and commercial Pt/C.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Shohei Harada, Duanxing Li, Kenta Iyoki, Masaru Ogura
Summary: This study investigates the catalytic performance of a composite catalyst composed of ZnZrOX and H-zeolite for the hydrogenation of CO2. The deactivation of the composite catalyst is influenced by ion exchange of Zn2+ and/or coke, with their effects differing based on the zeolite structure. Separating the grains of the composite catalyst can prevent deactivation.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Laura Proano, Christopher W. Jones
Summary: In this study, NiGa alloy particles supported on CeO2, ZrO2, and ZrO2-CeO2 solid solutions were prepared and characterized. The nature of the support was found to have a significant influence on the catalyst's activity and selectivity, with the crystalline structure of ZrO2 having the greatest impact. Pure ZrO2 showed the highest methanol selectivity and CO2 conversion at high Zr:Ce ratios. In equimolar and Ce-rich conditions, basic sites and oxygen vacancies were found to be the key parameters affecting methanol production.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liyan Zhang, Yinze Yang, Leilei Zhou, Fengyu Zhao, Haiyang Cheng
Summary: 1,6-Hexamethylenediamine was successfully synthesized via the reductive amination of 1,6-hexanediol using a Ru/PRL(x)-Al2O3 catalyst. The highly dispersed and anchored Ru species, formed by 1,10-phenanthroline (PRL), played a crucial role in the catalytic reaction. The formation of new acid-base pairs, electron deficient Ru species, and smaller nanoparticles contributed to the improved catalytic performances of the Ru/PRL-Al2O3 catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Anita Horvath, Miklos Nemeth, Andrea Beck, Gyorgy Safran, Valeria La Parola, Leonarda Francesca Liotta, Gregor Zerjav, Matevz Roskaric, Albin Pintar
Summary: This study investigates the catalytic and structural changes caused by the addition of 0.25 wt% indium in a 3% Ni/CeO2-Al2O3 catalyst prepared by impregnation method. The results show that the addition of indium can decrease the activity of the catalyst, but it improves its stability and reduces coking.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Ankush Kularkar, Vaibhav Vilas Khedekar, Sachin D. Chaudhari, Mudavath Ravi, Sadhana S. Rayalu, Penumaka Nagababu
Summary: Efficiently addressing the challenges of photocatalytic CO2 reduction to CH3OH is crucial. This study developed Zn-BTC MOF and its composites with CaIn2S4, achieving highly efficient and robust photocatalytic CO2 reduction to CH3OH under ambient conditions, using H2O2 as the hydrogen source. Among the composites, ZMCIS4 demonstrated excellent performance with a CH3OH evolution of 49100 μmol/g.cat and a quantum efficiency of approximately 78.41%. The enhanced performance was attributed to the production of nascent hydrogen atoms (H center dot) through the photo-splitting of H2O2 on the ZMCIS surface.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Dan Liu, Yudong Li, Chengyu Wang, Haiyue Yang, Rong Wang, Shujun Li, Xiaohui Yang
Summary: In this study, a self-supporting three-dimensional porous Co3O4 nanobelt array decorated on nickel foam (P-Co3O4 -NBA@NF) electrode with numerous active sites was successfully constructed for the oxidation of 5-Hydroxymethylfurfural (HMF) to 2,5-furan dicarboxylic acid (FDCA). The P-Co3O4 -NBA@NF electrode demonstrated high conversion efficiency, selectivity, and Faraday efficiency, as well as remarkable long-term stability. This research provides a promising electrocatalyst for biomass conversion.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yimin Li, Enggah Kurniawan, Fumiya Sato, Takayoshi Hara, Yasuhiro Yamada, Satoshi Sato
Summary: In this study, several silica-alumina catalysts modified with Ag were examined for the dehydration of 1,3-butanediol to 1,3-butadiene. Among them, an amorphous silica-alumina catalyst (SAL-3) modified with Ag showed the highest improvement in catalytic activity and stability when operated in H2 flow. The generation of reversible acid sites was found to be the reason behind the enhanced activity and stability of this Ag/SAL-3 catalyst. The effects of various parameters on the catalytic activity of Ag/SAL-3, such as reaction temperature, contact time, Ag content, and carrier gas, were investigated.
APPLIED CATALYSIS A-GENERAL
(2024)