Article
Energy & Fuels
Chao Sun, Katarzyna Swirk Da Costa, Ye Wang, Li Li, Marco Fabbiani, Vasile Hulea, Magnus Ronning, Changwei Hu, Patrick Da Costa
Summary: Promoted Ni/Y/SBA-16 catalysts exhibited enhanced catalytic performance in CO2 methanation, with the catalyst promoted with 10 wt% Y showing the best activity. The improved performance was attributed to increased reducibility of nickel species, higher surface oxygen species, and the presence of moderate basic sites caused by yttrium promotion.
Article
Nanoscience & Nanotechnology
Xingjie Wang, Zoha H. Syed, Zhihengyu Chen, J. David Bazak, Xinyi Gong, Megan C. Wasson, Nancy M. Washton, Karena W. Chapman, Justin M. Notestein, Omar K. Farha
Summary: In order to increase catalytic efficiency, researchers have successfully introduced a redox-active heterometallic Ce12V6-oxo cluster into mesoporous silica material SBA-15, demonstrating improved structural integrity and higher reactivity, which provides new insights for catalyst design and applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Applied
Hajime Hojo, Yuka Inohara, Ryo Ichitsubo, Hisahiro Einaga
Summary: In this study, LaNiO3 was prepared and modified with Mn, and its catalytic activity for CO and benzene oxidation was investigated. LaNiO3 showed higher CO oxidation activity than other perovskite oxides, which was attributed to the reactivity of the lattice oxygen. Mn-modified LaNiO3 exhibited higher activity for benzene oxidation, and the catalytic properties were correlated with the amount of Mn on the catalyst surface.
Article
Chemistry, Physical
Madalina Ciobanu, Gabriela Petcu, Elena M. Anghel, Florica Papa, Nicoleta G. Apostol, Daniela C. Culita, Irina Atkinson, Silviya Todorova, Maya Shopska, Anton Naydenov, Ralitsa Velinova, Viorica Parvulescu
Summary: A series of PtCeTi-SBA-15 catalysts with different Pt concentrations were synthesized and characterized, showing the influence of Pt and ceria addition on surface properties and oxidation conversion of hydrocarbons. CO oxidation, however, was found to be independent of the catalyst composition.
APPLIED CATALYSIS A-GENERAL
(2021)
Article
Environmental Sciences
Jiaxin Mu, Shangyi Li, Jing Wang, Xukai Li, Weirui Chen, Xinyuan Tong, Yiming Tang, Laisheng Li
Summary: By constructing three-dimensional cerium oxide/SBA-16 nanocomposites, efficient removal of bisphenol A via catalytic ozonation with a mineralization rate of up to 60.9% was achieved. The materials exhibited large surface area and uniform pore distribution, promoting adsorption and mass transfer. Additionally, they enhanced ozone utilization efficiency and facilitated the formation of reactive oxygen species.
Article
Biochemistry & Molecular Biology
Totka Todorova, Petya Petrova, Yuri Kalvachev
Summary: In this study, monometallic platinum, copper, and palladium catalysts were prepared using two types of ZSM-5 zeolite as supports. Catalyst samples loaded on ZSM-5 zeolite treated using HF and NH4F buffer solution exhibited higher activity in CO and benzene oxidation. The presence of secondary mesoporosity improved catalytic activity, but untreated ZSM-5 zeolite may be more active in certain cases.
Article
Engineering, Environmental
Jiantao Liang, Weirui Chen, Gaozu Liao, Jing Wang, Xipeng Wei, Yiming Tang, Xukai Li, Laisheng Li
Summary: A facile hydrothermal method was proposed to regulate the pore structure and introduce Ce-based Lewis sites within Ce-SBA-15, named as Ce-SBA-U. The mesoporous size of Ce-SBA-U could be enlarged by urea dosage, facilitating the mass transfer of ozone and its activation on Ce(III)-based Lewis sites. The Ce-SBA-U/O3 process achieved high removal rates of clofibric acid (CA) and TOC, indicating its superior performance compared to sole ozonation and Ce-SBA-15/O3 processes.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Review
Chemistry, Physical
Nafiseh Rahmani, Ahmad Amiri, Ghodsi Mohammadi Ziarani, Alireza Badiei
Summary: Mesoporous transition metal-based catalysts act as efficient catalytic supports and catalysts, providing high selectivity and controllability in the catalysis process. This emerging area offers researchers the opportunity to introduce novel heterogeneous catalysts.
MOLECULAR CATALYSIS
(2021)
Article
Energy & Fuels
Mahsa Niakan, Majid Masteri-Farahani, Farzad Seidi
Summary: This study described the catalytic application of propylsulfonic acid modified mesoporous SBA-16 for producing 5-hydroxymethylfurfural (HMF) for the first time. The successful immobilization of propylsulfonic acid groups on SBA-16 was assessed through various characterization techniques. The SO3H@SBA-16 material showed outstanding catalytic efficiency and recyclability in fructose conversion to HMF, achieving high yields in specific reaction conditions.
Article
Chemistry, Applied
Tao Liu, Xiaoqiu Ju, Zhixin Hu, Rongrong Xie
Summary: The confinement effect of ordered mesoporous SiO2 was found to effectively inhibit the aggregation of CoOx, promoting the formation of Co(III) species and enhancing the catalytic activity for CO oxidation. Additionally, the pore size of the carrier SBA-15 played a significant role in the catalytic activity of CoOx.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Applied
Xiuyun Ma, Xiaolin Yu, Maofa Ge
Summary: Ag supported on Co3O4 catalysts prepared by one-pot solvothermal method showed excellent catalytic activity for benzene oxidation, with higher oxidation activity and lower reaction temperature. The catalysts also exhibited outstanding long-term thermal stability.
Article
Chemistry, Physical
Jean-Luc Blin, Laure Michelin, Benedicte Lebeau, Anton Naydenov, Ralitsa Velinova, Hristo Kolev, Pierrick Gaudin, Loic Vidal, Anna Dotzeva, Krasimir Tenchev, Silviya Todorova
Summary: New data on the structural and catalytic properties of mono-component cobalt and bi-component Co-Ce catalysts supported on SBA-15 are reported. Performance evaluation was conducted through combustion tests of methane, propane, and n-hexane, showing different catalytic activity and reducibility among these catalysts.
Article
Engineering, Environmental
Xuteng Zhao, Dejun Xu, Yinan Wang, Zuwei Zheng, Ke Li, Yiran Zhang, Reggie Zhan, He Lin
Summary: This study demonstrates that the combination of electric field with 1% Pt/Ce0.75Zr0.25O2 catalyst can improve the catalytic performance of benzene oxidation at low temperature, increase the adsorbed oxygen content on the catalyst surface, accelerate the generation and consumption of intermediate products, and produce new intermediate products.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Zeinab Ezzeddine, Isabelle Batonneau-Gener, Yannick Pouilloux
Summary: The removal of zinc ions from water was studied using two types of ordered mesoporous silica (SBA-15 and SBA-16). Both materials were modified with APTES and EDTA through post grafting methods. The modified adsorbents were characterized by various analytical techniques, and the structural integrity was maintained. Optimal adsorption conditions and maximum adsorption capacity were determined through experimental tests, and the regenerated adsorbent showed no significant decline in adsorption efficiency.
Article
Chemistry, Multidisciplinary
O. A. Gonzalez Vargas, J. A. de Los Reyes Heredia, V. A. Suarez-Toriello, Sean M. Anderson, L. F. Chen, J. A. Wang
Summary: 1wt%Rh/Ce-MCM-41 catalysts were prepared and characterized for CO oxidation, demonstrating enhanced catalytic activity at low temperatures and proposing a reaction mechanism based on the formation of intermediary species on the surface in combination with Ce4+ incorporation into the framework.
RESEARCH ON CHEMICAL INTERMEDIATES
(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)