Article
Engineering, Environmental
Yuehao Shen, Yuxin Xiao, Hongjie Zhang, Hongjie Fan, Yao Li, Zhongli Yan, Wen-Hui Zhang
Summary: In this study, biochar-supported Fe-Cu bimetallic catalysts were synthesized and used to remove dye from wastewater generated by pulp and paper mills. The catalysts showed high efficiency in dye removal under both acidic and neutral conditions, and exhibited good magnetic separation ability and reusability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Bo Yuan, Zhen Qian, Xiaojie Yang, Mengchao Luo, Xiaohe Feng, Le Fu, Weijie Yang, Lijuan Yang, Jinghong Zhang, Yi Zhao, Runlong Hao
Summary: A novel microwave catalytic oxidation method for denitrification was developed, which can effectively convert NO to nitrate/nitrite with minimal NO2 yield. The use of a molecular sieve-supported oxygen-vacancy-enriched catalyst and microwave irradiation results in excellent catalytic activity and resistance.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Aitao Chen, Chao Li, Conghua Liu, Wuzhu Sun
Summary: Copper oxides supported on porous P-doped g-C3N4 (Cu/p-PCN) were obtained using a stepwise calcination process. The addition of P atoms into the g-C3N4 network provided additional electrons for the conjugated system. The Cu/p-PCN catalyst exhibited enhanced performance and H2O2 utilization due to the Cu-pi interactions and electron injection from P atoms.
APPLIED SURFACE SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Ying Liu, Shixian Huang, Helen J. Sun, Yao Liu, Lijiao Liang, Qingwei Nan, Tao Wang, Zhengzheng Chen, Jianting Tang, Chuanbo Hu, Joe R. Zhao
Summary: In this study, an amorphous Cu-Mn hopcalite catalyst was prepared and demonstrated excellent catalytic performance in the degradation of tetracycline using H2O2 as oxidant. The catalyst showed high stability and activity even after 6 cycles of reuse. The amorphous structure and high contents of chemically adsorbed oxygen, Cu+, and Mn4+ species were identified as the reasons for its performance.
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2023)
Review
Materials Science, Multidisciplinary
Ashitha Gopinath, Lakshmi Pisharody, Amishi Popat, P. V. Nidheesh
Summary: This review discusses the application of various materials as catalyst supports, including activated carbon, biochar, and fibers. It introduces the advantages and optimum conditions of different catalysts. Alginate-based catalysts are easy to prepare and exhibit high degradation efficiency. Zeolite-based catalysts are structurally stable and perform well in successive cycles. Fiber-based supports have both catalytic and cathodic functions due to their flexibility and conductivity. Graphene and carbon nanotubes have highly stable and conductive properties, promoting electron transfer.
CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE
(2022)
Article
Materials Science, Ceramics
Dian Dai, Huan Liang, Dongsheng He, Herman Potgieter, Ming Li
Summary: The study demonstrates that the diatomite modified with Fe-Mn binary oxide is an efficient photocatalytic material for degrading dye wastewater, with the synergy between Fe and Mn being the key factor in enhancing catalytic performance.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Chemical
Zhaobo Wang, Dajun Ren, Shanshan Shang, Shuqin Zhang, Xiaoqing Zhang, Wangsheng Chen
Summary: In this study, a novel metal-carbon nanocomposite was synthesized and used as a catalyst carrier for removing 2,4-DCP. The synthesized catalyst materials showed a rich pore structure and high specific surface area, and exhibited excellent performance in terms of applicability to a wide pH range and reusability.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Energy & Fuels
Masoumeh Khanchi, Seyed Mohammad Ali Mousavian, Saeed Soltanali
Summary: The experimental results show that SiO2-Al2O3-based catalysts perform better than SiO2 and Al2O3-based catalysts, with the best performance observed at lower Si/Al ratios.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Applied
Yayati Naresh Palai, Abhijit Shrotri, Miyuki Asakawa, Atsushi Fukuoka
Summary: A highly efficient Lewis acid catalyst for the isomerization of glucose to fructose was synthesized by controlling the dispersion of Sn on SBA15. The catalyst exhibited high selectivity and fructose yield, while mechanisms involving condensation of Sn with silanol groups on SBA15 were proposed. Despite deactivation due to byproduct deposition in the third cycle, catalyst activity could be restored by calcination.
Article
Engineering, Environmental
He Liang, Ruiping Liu, Chengzhi Hu, Xiaoqiang An, Xiwang Zhang, Huijuan Liu, Jiuhui Qu
Summary: By introducing Co heteroatoms into MIL-101(Fe), bimetal organic frameworks with engineered dual sites were constructed, which could effectively decrease the energy barrier of H2O2 activation and exhibit high efficiency for the degradation of ciprofloxacin.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Zi-You Zhang, Guan-Dong Zhang, Xi-Xi Sheng, Qian-Wen Ding, Yu-Zhuo Bai, Yan Su, Hong-Ke Liu, Zhi Su
Summary: Two Cu(I)-based coordination complexes were developed for the degradation of organic water pollutant methyl orange, with or without photoirradiation; they exhibited superior chemical stability and could maintain their structures after multiple degradation cycles, offering practical significance in sewage treatment.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Chemistry, Physical
Jinghua Xu, Ruifeng Wang, Lirong Zheng, Junguo Ma, Wenjun Yan, Xiaofeng Yang, Junying Wang, Xiong Su, Yanqiang Huang
Summary: The study investigated the nature of Ni active sites using Ni supported on alumina-silica as the catalyst, and found that Ni+ sites exhibit unprecedented activity in ethylene oligomerization, potentially directly participating in the formation of active sites.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Fu-Xue Wang, Zi-Wei Zhang, Fei Wang, Ya Li, Zi-Chen Zhang, Chong-Chen Wang, Baoyi Yu, Xuedong Du, Peng Wang, Huifen Fu, Chen Zhao
Summary: Constructing Fe-Cu bimetal catalysts is an efficient strategy to promote Fe(III)/Fe(II) cycle, and this study successfully synthesized a new Fe-MOF catalyst BUC-96(Fe) by hydrothermal reaction and microwave-assisted method. Bimetal BUC-96(FeCu-x) was also obtained by adding CuSO4 into the synthesis process. The results showed that BUC-96(FeCu-5) exhibited excellent organic elimination performance, with a reaction rate 20.1 times higher than that of BUC-96.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Feng Chen, Xi-Lin Wu, Chenyang Shi, Hongjun Lin, Jianrong Chen, Yanpeng Shi, Shaobin Wang, Xiaoguang Duan
Summary: A novel transition metal single-atom catalyst has been developed for efficient heterogeneous Fenton-like reactions, showing excellent cyclic stability and a wide effective pH range. The catalyst accelerates the production and separation of charge carriers, enhancing the reaction performance.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Physical
Yuying Chen, Caiwen Wu, Haiyang Xie, Zhaoyan Deng, Yiming Liu, Yanjuan Zhang, Zuqiang Huang, Huayu Hu, Tao Gan
Summary: In order to address the issues of iron dissolution and poor stability, a nitrogen-doped graphitic carbon-supported FeCo/Fe3C dual active sites catalyst was successfully prepared. This catalyst exhibited high efficiency, stability, and reproducibility in the ultrafast degradation of high concentration Rhodamine B, thanks to the synergistic mechanism between the dual active sites (Fe-Co and Fe3C) and the adsorption sites (Fe3C and pyrrolic-N).
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Energy & Fuels
Karmen Margeta, Zvonimir Glasnovic, Natasa Zabukovec Logar, Sanja Tisma, Anamarija Farkas
Summary: This paper proposes a solution to the problem of city sustainability by using Seawater Steam Engine technology to supply cities with energy and drinking water. The case study of Zagreb, Croatia shows that sustainable development can be achieved in 30 years, making it a paradigm for cities worldwide. The development of the Philosophy of Sustainability is encouraged for the successful achievement of these goals.
Review
Chemistry, Multidisciplinary
Andraz Suligoj, Romana Cerc Korosec, Gregor Zerjav, Natasa Novak Tusar, Urska Lavrencic Stangar
Summary: This review emphasizes the progress and specific operational methods of solar-powered photocatalysts, highlighting the importance and challenges of solar-driven films.
TOPICS IN CURRENT CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Tia Kristian Tajnsek, Natasa Zabukovec Logar, Matjaz Mazaj
Summary: One of the advantages of MOFs is the ability to modify their properties and adjust their inherent activity. The effect of additives on the size, morphology, and textural properties of nanoMOFs can be distinguished based on their impact. This study investigates the effect of four acid modulators and their concentration on the size, morphology, and textural properties of a bioNICS1 material. The type of additive plays a different role in crystal growth and generation of defects.
Article
Biochemistry & Molecular Biology
Ivalina Trendafilova, Manuel Ojeda, John M. Andresen, Alenka Ristic, Momtchil Dimitrov, Natasa Novak Tusar, Genoveva Atanasova, Margarita Popova
Summary: Transition metals as catalysts for total VOC oxidation at low temperatures are challenging. This study prepared and tested iron-modified SBA-15, AlSBA-15, and ZrSBA-15 materials with varying Fe loading for toluene oxidation. The results showed that increasing Fe loading improved the oxidation rate and decreased the temperature required for complete toluene removal. Surface properties of the mesoporous support influenced the type and localization of iron oxide species, and 5 wt. % Fe-containing ZrSBA-15 exhibited excellent activity in the total oxidation of toluene at lower temperatures due to the synergistic effect of Fe-Zr and the presence of accessible and stable Fe2+/Fe3+ active sites.
Article
Nanoscience & Nanotechnology
Nika Vrtovec, Sarah Jurjevec, Natasa Zabukovec Logar, Matjaz Mazaj, Sebastijan Kovacic
Summary: Metal-organic (MOF)-polymer composites have attracted great interest for their potential in industrial applications. This study focuses on the combination of MOFs and polymerized high internal phase emulsions (polyHIPEs) to create highly porous composite materials. By using a hybridization method, MOFs can be grown in the polyHIPEs, resulting in a hierarchical structure with excellent mechanical stability and enhanced CO2 capture performance compared to pure MOFs. The composites also show fast adsorption and desorption kinetics, as well as high regeneration capacity.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Marija Svegovec, Aljaz Skrjanc, Andraz Krajnc, Natasa Zabukovec Logar
Summary: With the increasing interest in amorphous MOFs and ZIFs, there is a need for optimal and environmentally friendly synthesis of parent materials. Among the ZIFs, ZIF-76 has received the most research along with ZIF-62. This study presents two new green synthesis methods for creating a ZIF-76 framework, namely mechanochemical and precipitation approaches, to shorten reaction times and allow for room temperature synthesis. This work is the first step towards green synthesis of ZIF-76 and its thermally treated variants.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Biochemistry & Molecular Biology
Aljaz Skrjanc, Mojca Opresnik, Matej Gabrijelcic, Andraz Suligoj, Gregor Mali, Natasa Zabukovec Logar
Summary: The study reveals that the curing rate of nucleation microsols prepared by low-temperature melting is influenced by solute concentration, melting temperature, and curing agent concentration. This conclusion has important implications for guiding the selection of process parameters in actual preparation.
Article
Chemistry, Multidisciplinary
Aljaz Skrjanc, Dominik Jankovic, Anton Meden, Matjaz Mazaj, Erik Svensson Grape, Martin Gazvoda, Natasa Zabukovec Logar
Summary: This study reports the synthesis of the first Ni-based ZIFs and demonstrates their high potential as heterogeneous catalysts for the Suzuki-Miyaura cross-coupling reaction. The presence and arrangement of the carbonyl functional groups on the imidazole linker play a crucial role in completing the preferred octahedral coordination of nickel, providing a promising platform for the rational design of Ni-based ZIFs for a wide range of catalytic applications.
Article
Chemistry, Multidisciplinary
Anze Hubman, Janez Volavsek, Tomaz Urbic, Natasa Zabukovec Logar, Franci Merzel
Summary: Linde type A (LTA) aluminophosphate is a promising candidate for energy storage material in low-temperature solar and waste-heat management. This paper provides mechanistic insights into the hydration process using molecular modeling methods. The study refines the existing empirical force-field and reproduces the experimentally determined X-ray structure factors.
Article
Chemistry, Physical
Tatiparthi Vikram Sagar, Praveen Kumar, Bostjan Zener, Andraz Suligoj, Kamila Koci, Urska Lavrencic Stangar
Summary: Amorphous ZrO2 and Mn addition to ZrO2 catalysts were studied for CO2 hydrogenation to formic acid and acetic acid using a hydrazine monohydrate. The Mn addition was done by physical mixing method and co-precipitation method, which showed different effects on the stabilization of Mn in different oxidation states. Optimization of reaction parameters was also investigated.
MOLECULAR CATALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Hue-Tong Vu, Iztok Arcon, Danilo Oliveira de Souza, Simone Pollastri, Goran Drazic, Janez Volavsek, Gregor Mali, Natasa Zabukovec Logar, Natasa Novak Tusar
Summary: Catalyst design is crucial for improving catalytic activity and product selectivity. This study presents a systematic structural study of Ni in the Ni/ZSM-5 materials, revealing the changes in the local environment of Ni species induced by the different Al contents of the parent ZSM-5. The results show that the number of highly reducible and active NiO crystals is strongly correlated with the framework Al sites present in ZSM-5 zeolites, which is beneficial for further investigation of the catalytic activities of Ni/ZSM-5 and other metal-modified bifunctional catalysts.
NANOSCALE ADVANCES
(2022)
Article
Chemistry, Physical
Venkata D. B. C. Dasireddy, Natasa Zabukovec Logar, Janez Kovac, Blaz Likozar
Summary: The effect of oxygen mobility and nature in the V2O5-WO3/TiO2 catalyst on n-butane oxidative dehydrogenation was studied. The presence of NO resulted in high selectivity towards butadiene. The co-existence of O-2/NO favored butadiene production, and the presence of oxygen in the catalyst lattice promoted the insertion of oxygen into the lattice, leading to increased butadiene synthesis yield.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Applied
Qingyuan Zheng, Jack H. Williams, Scott Elgersma, Mick D. Mantle, Andrew J. Sederman, G. Leendert Bezemer, Constant M. Guedon, Lynn F. Gladden
Summary: In this study, a pilot-scale fixed-bed reactor compatible with NMR/MRI was developed for Fischer-Tropsch synthesis. Multiple magnetic resonance techniques were applied to quantitatively characterize different product species within catalyst pellets, providing valuable information for catalyst and reactor optimization.
Article
Chemistry, Applied
Lisa Ramisch, Sebastian Pfaff, Sabrina M. Gericke, Edvin Lundgren, Johan Zetterberg
Summary: We present a combination of optical operando techniques that allow simultaneous measurement of adsorbed species on catalyst surfaces, monitoring of surface oxide formation, and imaging of the gas phase above the catalyst surface. The experimental setup was validated by studying CO oxidation on Pd(100) at different pressures, revealing the effects of pressure on the heterogeneous catalytic reaction.
Article
Chemistry, Applied
Marta Paniagua, Gabriel Morales, Juan A. Melero, Daniel Garcia-Salgado
Summary: The influence of common impurities in levulinic acid on the catalytic performance of different acid catalysts for bio-jet fuel production was studied. It was found that furfural had the greatest detrimental effect on catalyst performance, while propyl-sulfonic acid-modified SBA-15 and sulfonic acid resin Amberlyst-70 showed good regeneration ability.
Article
Chemistry, Applied
Jesus Tapiador, Pedro Leo, Guillermo Calleja, Gisela Orcajo
Summary: This study presents a new MOF material, Zn-URJC-13, with acid and basic sites, permanent porosity, and high affinity to CO2 molecules. The Zn-URJC-13 catalyst exhibits efficient performance in CO2 cycloaddition reactions and can be reused multiple times.
Article
Chemistry, Applied
Dan Zhao, Vita A. Kondratenko, Dmitry E. Doronkin, Shanlei Han, Jan-Dierk Grunwaldt, Uwe Rodemerck, David Linke, Evgenii V. Kondratenko
Summary: This study demonstrates the potential of cheap and commercially available Zr or Ti-based supports and ZnO to serve as active and selective catalysts for propane dehydrogenation (PDH). The catalytically active species formed in situ under PDH conditions consist of isolated ZnOx. ZnOx on the surface of LaZrOx shows the highest rate of propene formation.
Article
Chemistry, Applied
Hanbyeol Kim, Jung Rae Kim, Young-Kwon Park, Jeong-Myeong Ha, Jungho Jae
Summary: In this study, metal phosphates were used as catalysts for biomass conversion to produce sustainable aromatics through DielsAlder cycloaddition reactions. The effects of synthesis method, activation method, and P/Ti molar ratio on the structure and acid properties of titanium phosphate catalysts were systematically studied. The mesoporous titanium phosphate catalyst synthesized by hydrothermal method at 180℃ for 12 h followed by ethanol refluxing at 60℃ for 24 h at a molar P/Ti ratio of 1 showed the highest surface area and acid site density.
Article
Chemistry, Applied
Yasin Khani, Sumin Pyo, Kwang-Eun Jeong, Chul-Ung Kim, Moonis Ali Khan, Byong-Hun Jeon, Kun-Yi Andrew Lin, Siyoung Q. Choi, Young-Kwon Park
Summary: A protonated form of Zeolite Socony Mobil-5 (H-ZSM-5) catalyst was synthesized through a hydrothermal method using different sources of silica. The effect of loading the catalyst with yttrium, samarium, and gadolinium on the acidic properties was investigated. Among the metal-loaded catalysts, the Sm/LHZ catalyst showed the best performance in the methanol to propylene conversion due to its high amount of weak and intermediate acid sites, while the Gd-LHZ catalyst increased the selectivity towards ethane and propane.
Article
Chemistry, Applied
Michael Franc, Ivana Cisarova, Jan Vesely
Summary: The present study investigates an enantioselective cyclization of enals with imidazolone derivatives catalyzed by a combination of achiral Pd(0) complex and chiral secondary amine. Corresponding spirocyclic imidazolones were produced in high yields with moderate diastereoselectivity and excellent enantioselectivity. The developed co-operative catalytic methodology provides a highly substituted spirocyclic scaffold with four stereogenic centers under mild conditions.
Article
Chemistry, Applied
Mauro Alvarez, Jennifer Cueto, David P. Serrano, Pablo Marin, Salvador Ordonez
Summary: This study focuses on improving the formulation and preparation methods of catalysts for the production of dimethyl carbonate. By using suitable catalyst preparation methods and copper salt precursors, the researchers successfully produced catalysts with optimal performance for dimethyl carbonate formation.
Article
Chemistry, Applied
Claudia J. Keijzer, Luc C. J. Smulders, Dennie Wezendonk, Jan Willem de Rijk, Petra E. de Jongh
Summary: This study investigates the catalytic behavior of alpha-alumina supported silver catalysts in the presence of chloride. It is found that the particle size of silver can affect the selectivity of the catalyst, but different strategies lead to different results. In this size range, the selectivity of ethylene oxide is correlated to the Ag : Al2O3 surface ratio.
Article
Chemistry, Applied
Takeshi Aihara, Wataru Aoki, Michikazu Hara, Keigo Kamata
Summary: The development of acid-base bifunctional catalysts is important for promoting specific chemical transformations. In this study, Ti-based perovskite oxides were synthesized and used as catalysts for two C-C bond-forming reactions (cyanosilylation and Knoevenagel condensation). The highly pure SrTiO3 nanoparticles with a high specific surface area exhibited the highest catalytic performance, and could be easily recovered and reused.
Article
Chemistry, Applied
Olga Gorlova, Petra Pribylova, Eliska Vyskocilova, Katerina Peroutkova, Jan Kohout, Iva Paterova
Summary: This study investigates the Baeyer-Villiger oxidation of beta-cyclocitral using tin-modified mixed oxides as catalysts. The optimal reaction conditions and the effects of various factors on the reaction course and selectivity were determined. The results show that tin-modified mixed oxides exhibit high activity and selectivity in the oxidation reaction.
Article
Chemistry, Applied
M. I. Avila, M. M. Alonso-Doncel, L. Briones, G. Gomez-Pozuelo, J. M. Escola, D. P. Serrano, A. Peral, J. A. Botas
Summary: The catalytic fast pyrolysis of lignin using ion-exchanged zeolite catalysts showed significant improvements in bio-oil quality and the production of aromatic hydrocarbons and oxygenated compounds.
Article
Chemistry, Applied
Enrico Catizzone, Giorgia Ferrarelli, Paolo Bruno, Girolamo Giordano, Massimo Migliori
Summary: The acid-catalysed alcohol conversion reaction is a promising route for de-fossilization strategies. Research on pure alcohol conversion and simultaneous dehydration of mixed alcohols have shown different product compositions, with the type and distribution of acid sites affecting the reaction mechanism.
Article
Chemistry, Applied
Alireza Ranjbari, Juho Kim, Jihee Yu, Jiyun Kim, Mireu Park, Nayoung Kim, Kristof Demeestere, Philippe M. Heynderickx
Summary: This study investigated a novel kinetic model for the adsorption and photocatalytic degradation of methyl orange using commercial ZnO and reduced ZnO photocatalysts. The results provided new insights into the interaction of catalysts with molecules of different charges and compared with a previous study on methylene blue. The presence of oxygen vacancies in ZnO and their effects on adsorption and photocatalytic degradation were analyzed, and the photocatalytic degradation rate of reduced ZnO was found to increase significantly.
