Article
Chemistry, Applied
Kristina Chakarova, Mihail Mihaylov, Konstantin Hadjiivanov
Summary: Efficient CO2 capture is crucial for addressing current environmental issues. Porous materials, such as zeolites, show promise in this regard, but adsorption capacity remains a key concern. This study investigates CO2 adsorption on NaY zeolite using FTIR spectroscopy and reveals the formation of Na+ center dot center dot center dot O-C-O species at ambient temperature. The study also demonstrates the potential for simultaneous binding of two CO2 molecules to one cationic site, suggesting new possibilities for the design of high-capacity CO2 adsorbents.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Dong-il Kwon, Muhammad Numan, Jungmin Kim, Murat Yilmaz, Sang-Eon Park, Hyotcherl Ihee, Changbum Jo
Summary: In this study, the adsorption properties of zeolites were systematically tuned by covalently attaching organic molecules to the interior micropore walls. The post-functionalization significantly improved the selectivities of CO2/CH4 and CO2/N-2, although it slightly reduced the CO2 adsorption capacity. Among the functionalized zeolites, the one functionalized with isopropylbenzene exhibited the highest selectivities, which can be attributed to the reduction of effective micropore diameters.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Engineering, Environmental
Shuhui Zhang, Liwei Wang, Yan Zhang, Fan Cao, Qie Sun, Xiaohan Ren, Ronald Wennersten
Summary: The study explores the influence mechanism of hydroxyl groups on the adsorption of SO2 by activated carbon through experiments and simulations. The results show that hydroxyl functional groups promote the physical adsorption of SO2 on activated carbon by increasing its polarity. The hydroxyl groups also enhance the physisorption of SO2 and H2O through dipole-dipole interactions and hydrogen bonding. The coexistence of SO2, H2O, and O2 on activated carbon promotes their mutual physisorption through non-covalent interactions.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Chemical
Guiyao Song, Minzhe Li, Lin Xu, Xiaopei Yang, Muhammad Asif Nawaz, Huimin Yuan, Zhixiang Zhang, Xianming Xu, Dianhua Liu
Summary: Selective CO2 hydrogenation to aromatics is achieved using a bifunctional catalyst composed of sodium-promoted FeMnOx and HZSM-5. The catalyst shows high selectivity and conversion rate, and the addition of phosphorus and proximity between sodium and FeMnOx further improves the performance.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Nikola L. Drenchev, Boris L. Shivachev, Lubomir D. Dimitrov, Konstantin I. Hadjiivanov
Summary: Efficient CO2 capture materials should have high adsorption capacity, suitable CO2 adsorption enthalpy, and resistance to water vapor. This study investigates the effect of water on CO2 adsorption and identifies various mixed ligand complexes formed in the presence of water. The results show that water in moderate amounts does not block CO2 adsorption sites. Evaluation: 8/10
Article
Engineering, Environmental
Jae-Jeong Kim, Suk-Hoon Hong, Dooyong Park, Kyounghee Chung, Chang-Ha Lee
Summary: A new concept of the desorbent swing adsorption (DSA) process operating at a constant pressure is proposed, which was applied to separate propane and propylene with carbon dioxide as the desorbent. The optimization of the desorption step and subsequent desorbent recovery processes are important for further studies.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Chemical
Xingbo Wang, Deng Hu, Yingdong Hao, Lina Zhang, Nannan Sun, Wei Wei
Summary: Massive CO2 emission contributes greatly to global warming, and carbon capture, utilization and storage (CCUS) has been proposed as an essential option for carbon reduction. The integrated carbon capture and conversion (ICCC) approach, using efficient dual-functional materials (DFMs), has shown potential for reducing CCUS costs. In this study, Ni-MgO-Al2O3 DFMs were prepared by calcination of Ni-impregnated Mg-Al layered double hydroxide (MgAl-LDH), and achieved excellent ICCC performance with high selectivity for converting captured CO2 to CH4. This work provides a pathway for practical implementation of ICCC technology and inspires other integration approaches for CO2 capture and mitigation technologies.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Qixin Zhou, Jinsong Zhou, Lingtao Zhou, Chenghang Zheng, Zhuang Liu, Yang Lu, Bohao Li
Summary: DFT-D2 theoretical calculations were used to investigate the adsorption behaviors and mechanisms of elemental mercury (Hg-0) on the low-Miller index mackinawite surface (FeS(001)-S surface) with the involvement of carbon or sulfur. The results showed that carbon atom can act as a linker between the substrate and the Hg atom, while sulfur-doped surface led to the formation of a chemical bond between the Hg atom and the surface. The adsorption process followed Langmuir-Hinshelwood Mechanism.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Zishen Wang, Xiao-Fang Chen
Summary: Methanol adsorption in HSAPO-34 was investigated using periodic density functional theory, revealing that methanol can adsorb on the Bro?nsted acid site via hydrogen bonding or protonation. The adsorption configurations coexist and vary slightly within the channel.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Miroslaw Kwiatkowski, Dimitrios Kalderis, Wataru Tono, Toshiki Tsubota
Summary: In this study, the porous structure of activated carbons prepared from Moso bamboo was mathematically analyzed. The analysis revealed the complexity of the carbon's porous structure and the differences in CO2 and N-2 adsorption. The combination of various methods used in the study assists in determining the optimal activated carbon for CO2 adsorption.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Chemistry, Physical
Ding Jiang, Yuting He, Jinrui Zhang, Jie Yin, Jing Ding, Shuang Wang, Hongping Li
Summary: Conjugate acid-base bi-functional PILs (CAB-PILs) with carboxylate and carboxyl branches were synthesized and used as catalysts for the cycloaddition reaction of glycidol with CO2. The catalyst exhibited excellent characteristics, containing both Lewis base and Bronsted acid sites, for converting CO2 to cyclic carbonate under mild conditions. It showed good reusability and remained excellent activity after five reaction cycles. The CCIm ionic monomer played a role in CO2 absorption and had a synergistic effect with the CEImCl in the CAB-PILs to promote cycloaddition reaction.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
K. N. D. Bandara, K. M. D. C. Jayathilaka, J. K. D. S. Jayanetti, D. P. Dissanayake
Summary: It has been found that Cu2O (100) is a better sensing surface for hydrocarbons compared to Cu2O (111). Density functional theory calculations were used to obtain adsorption energies and activation energies for C-H bond dissociation on oxygen terminated cuprous oxide surfaces. Results showed that Cu2O (111) has a higher affinity towards H2O and CO2. Additionally, it was observed that the activation energy for H3C-H bond dissociation on Cu2O (100) is significantly lower than that on Cu2O (111), making it a better sensing surface for hydrocarbons.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Applied
Nikola Drenchev, Oleg Lagunov, Konstantin Hadjiivanov
Summary: Adsorption plays a crucial role in various natural and industrial processes. This study investigates the coordination chemistry of Ca2+ sites in CaX zeolite by analyzing the IR spectra of adsorbed probe molecules (CO and N2) at low temperature. The results reveal that the accessible Ca2+ sites are uniform and occupy SII positions, and each Ca2+ site in CaX has three coordinative vacancies. The findings have important implications for understanding adsorption mechanisms and designing efficient adsorbents.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Physical
Kenta Motobayashi, Yoshiki Maeno, Katsuyoshi Ikeda
Summary: Researchers have found that RTIL cations can stabilize CO2 center dot- at the electrode, which is the key to the low overpotentials observed in CO2 electroreduction in RTILs.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Fucheng Wang, Yuxiao Meng, Xuanqi Chen, Lu Zhang, Guohua Li, Zhangfeng Shen, Yangang Wang, Yongyong Cao
Summary: The size of Ni-based catalysts plays a crucial role in the catalytic activity and selectivity of CO2RR, with larger Ni-based catalysts exhibiting higher catalytic activity and selective reduction of CO2 to CH4.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Lidia Cata, Natalia Terenti, Cristina Cociug, Niculina Daniela Hadade, Ion Grosu, Cristina Bucur, Bogdan Cojocaru, Vasile Parvulescu, Michal Mazur, Jiri Cejka
Summary: This study reports a simple approach to self-entrapping palladium nanoparticles within porous aromatic frameworks (PAFs) to form active nanocatalysts. The PAF-entrapped Pd nanocatalysts showed high catalytic activity and stability in Suzuki-Miyaura cross-coupling reactions, as demonstrated by various characterization techniques and catalytic experiments.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Correction
Chemistry, Physical
Mengting Jin, Mingxiu Liu, Petr Nachtigall, Lukas Grajciar, Christopher James Heard
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Roman Barakov, Nataliya Shcherban, Oleg Petrov, Jan Lang, Mariya Shamzhy, Maksym Opanasenko, Jiri Cejka
Summary: The one-pot Prins-Friedel-Crafts reaction catalyzed by large-pore zeolites is an environmentally friendly route to valuable heterocyclic compounds. The catalytic behavior of a set of MWW zeolite catalysts with varying textural properties and chemical compositions was investigated and compared to that of a large pore beta zeolite. The MWW zeolites showed similar selectivities towards targeted products containing a 4-arylhetrahydropyran moiety, with high concentration and enhanced accessibility of acid sites being key factors for achieving high conversion and selectivity.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Physical
Andreas Erlebach, Petr Nachtigall, Lukas Grajciar
Summary: The computational discovery and design of zeolites using neural network potentials (NNP) has been demonstrated to be effective in identifying stable and reactive frameworks. This approach has also unveiled numerous hypothetical zeolite frameworks within the thermodynamically accessible range of synthesis.
NPJ COMPUTATIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Ang Li, Yuyan Zhang, Christopher J. J. Heard, Kinga Golabek, Xiaohui Ju, Jiri Cejka, Michal Mazur
Summary: The silanol-rich layered zeolite IPC-1P is used to stabilize ultra-small Rh nanoparticles, preventing sintering at high temperatures. Different architectures, such as microporous and mesoporous, can be prepared by adjusting IPC-1P interlayer space through swelling.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Chemistry, Multidisciplinary
Steven L. Suib, Jan Prech, Ewelina Szaniawska, Jiri Cejka
Summary: Metal substitution in molecular sieve systems is a driving force for developing novel catalytic processes in green chemistry and achieving sustainability in the chemical industry and our everyday life. Metal-substituted molecular sieves provide advantages such as high surface areas, molecular sieving effects, confinement effects, and variability and stability in active site and morphology.
Article
Chemistry, Applied
Ondrej Vesely, Russell E. Morris, Jiri Cejka
Summary: Zeolites are key materials in the chemical industry, with diverse applications ranging from water purification to oil refining. Recent research has focused on specialized applications such as fine chemical synthesis and small organic compound separation, driving the need for new zeolites with unique structural and chemical properties. Tailored organic structure-directing agents, particularly the introduction of germanium, have led to the discovery of numerous new extra-large pore zeolites for selective catalysis. Furthermore, the germanosilicate chemistry provides unparalleled opportunities for tailoring zeolite-derived materials through controlled post-synthetic transformations, resulting in the development of porous materials with customized characteristics and properties.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Wieslaw J. Roth, Takayoshi Sasaki, Karol Wolski, Barbara Gil, Szczepan Zapotoczny, Jiri Cejka, Martin Kubu, Michal Mazur, Yasuo Ebina, Nobuyuki Sakai, Dai-Ming Tang, Renzhi Ma
Summary: This article introduces a soft-chemical treatment method that can exfoliate layered zeolite MFI into nanosheets, which can be used for the synthesis of layer-based hierarchical and nanocomposite materials. The obtained nanosheets have uniform hydrated thickness and can be reassembled into self-standing discs or films, preserving high acid site concentration and porosity. The oriented MFI films formed by this method can be applied in catalysis and separations.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Mengting Jin, Manoj Ravi, Chen Lei, Christopher J. Heard, Federico Brivio, Zdenek Tosner, Lukas Grajciar, Jeroen A. van Bokhoven, Petr Nachtigall
Summary: Through experimental Al-27 NMR spectroscopy and computational data, this study reveals the detailed structure and formation mechanisms of zeolite framework-associated octahedral aluminium for the first time. The octahedral Lewis acid site becomes kinetically allowed and thermodynamically stable under wet conditions in the presence of multiple nearby Bronsted acid sites. The critical condition for the existence of such octahedral Lewis acid sites appears to be the availability of three protons.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Qiudi Yue, Gwladys Steciuk, Michal Mazur, Jin Zhang, Oleg Petrov, Mariya Shamzhy, Mingxiu Liu, Lukas Palatinus, Jiri Cejka, Maksym Opanasenko
Summary: Zeolites are important materials for research and industry, but current synthesis methods are limited. Harsh hydrothermal conditions are required for classical procedures, and post-synthesis methods are only suitable for certain parent materials. However, by stopping degradation at intermediate structures, a new highly crystalline zeolite, IPC-20, was obtained from the parent zeolite IWV through seed-assisted crystallization and gentle transformation. This approach can be applied to any labile material with a staged structure.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Review
Chemistry, Multidisciplinary
Wieslaw J. Roth, Maksym Opanasenko, Michal Mazur, Barbara Gil, Jiri Cejka, Takayoshi Sasaki
Summary: This article provides an overview of the latest research progress on the exfoliation of zeolites into monolayers. It highlights three main challenges in the field, discusses the feasibility of exfoliation, uniform layer thickness, and potential applications. Four zeolites have been confirmed to directly exfoliate into monolayers, and their characterization methods are introduced. The future directions include the preparation of oriented films and membranes, hierarchical nanocomposites with other active species, and intimate mixtures with other materials.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Francisco Artillo, Yuyan Zhang, Maria del Mar Alonso-Doncel, Lidia Amodio, Michal Mazur, Patricia Pizarro, Kveta Kalikova, Jiri Cejka, David P. Serrano
Summary: MFI zeolitic materials in the form of nanosponges (nSP) and nanosheets (nSH) incorporating Al and Ga into the framework were synthesized. The catalytic performance of the Al- and Ga-MFI samples in the pyrolysis of LDPE and oak wood was compared, and it was found that nanosponge zeolites showed superior cracking and deoxygenation activity, while Ga-containing materials favored dehydrogenation reactions and enhanced production of aromatic hydrocarbons.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Chen Lei, Andreas Erlebach, Federico Brivio, Lukas Grajciar, Zdenek Tosner, Christopher J. Heard, Petr Nachtigall
Summary: Solid state (ss-) Al-27 NMR is a valuable tool for characterizing zeolites, but its interpretation is complex and aluminum distributions are difficult to determine. Computational modeling has become popular to support experimental characterization, but simplifying assumptions are often made without justification. This study evaluates the effects of different models on the prediction of Al-27 NMR chemical shifts in zeolites and highlights the importance of operando modeling and considering factors like water loading, temperature, and cation characteristics. Machine learning regression is used to develop a relationship between chemical shifts and structural parameters, allowing for accurate prediction from dynamic simulations.
Article
Chemistry, Inorganic & Nuclear
Ondrej Vesely, Michal Mazur, Jan Prech, Jirf Cejka
Summary: This study modified the Reverse ADOR process to prepare extra-Large pore zeolite UTL, incorporating a high amount of aluminium into the framework. The modified process significantly reduces synthesis time and improves catalytic performance of the reconstructed UTL zeolite.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Nanoscience & Nanotechnology
Lidia Cata, Natalia Terenti, Cristina Cociug, Niculina Daniela Hadade, Ion Grosu, Cristina Bucur, Bogdan Cojocaru, Vasile Parvulescu, Michal Mazur, Jiri Cejka
Summary: This study introduces a new approach for self-entrapping Pd nanoparticles within the PAF structure, leading to efficient catalytic reactions. The PAF-entrapped Pd nanocatalysts synthesized via Sonogashira cross-coupling showed high catalytic activity and stability in Suzuki-Miyaura coupling reactions.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Applied
Lulu Wan, Gan Ye, Yuying Chang, Zhaohan Yang, Guangming Shi, Qiuli Zhang, Jin Wang
Summary: This study developed an efficient approach to upgrade the oxidative desulfurization (ODS) performance of Zr-MOFs with proton stimulation. Experimental results showed that the introduction of protons can significantly improve the ODS efficiency. This work provides a facile and efficient strategy for enhancing the ODS performance of pristine MOFs.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Qiqi Lu, Xiu-Zhi Wei, Qi Zhang, Xinghua Zhang, Lungang Chen, Jianguo Liu, Yubao Chen, Longlong Ma
Summary: The application of Pd-M bimetallic clusters in the selective hydrogenation reaction was investigated, and the Pd0.6Ni@S-1 catalyst was found to exhibit high selectivity in the conversion of phenylacetylene to styrene. The confinement effect of zeolite inhibited over-hydrogenation and improved the stability of the catalysts. Furthermore, the solvent properties also influenced the product distribution.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Review
Chemistry, Applied
Bo Li, Lumin Hong, Changdi Jing, Xianyang Yue, Huabo Huang, Qianqian Jiang, Jianguo Tang
Summary: MOF materials with adjustable pore structure and polymetallic sites have been explored as electrocatalysts for OER. Bimetallic materials show higher electrocatalytic activity than monometallic materials, while carbon-coated and doped MOF catalysts exhibit stable and good OER activity. The synergistic interaction between polymetallic active sites effectively improves the intrinsic activity of MOF on OER.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Shichun Gu, Ruyi Wang, Junxiong Zhang, Hairong Dong, Liping Deng, Xue Wang, Yapeng He
Summary: In this study, monodispersed hollow mesoporous organosilica nanospheres with controlled core cavity and mesoporous shell were successfully synthesized. These hollow nanospheres showed a high adsorption capacity for Pb2+ in water solution and exhibited acceptable recycling and stability.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Lucie Havelkova, Bogdana Bashta, Michaela Vankova, Jiri Zednik, Jiri Brus, Jan Svoboda, Alice Vagenknechtova, Jan Sedlacek
Summary: An atom-economic one-step chain-growth coordination homopolymerization providing high yields of functionalized hyper-cross-linked polyacetylenes with a permanent micro/mesoporous texture and a BET area of up to 1062 m2/g is reported. The homopolymerization is highly compatible with the heteroatom groups of the monomers and allows the preparation of well-defined porous networks with a wide spectrum of univalent groups.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Shirui Pang, Yuxin Liu, Zhe Zhang, Yuxin Li, Chunguang Li, Zhan Shi, Shouhua Feng
Summary: This study focuses on using a functional separator to suppress the shuttle effect of soluble lithium polysulfides in Li-S batteries. It is found that the functionalized sulfonic acid group not only accelerates the conduction of lithium ions, but also repels polysulfide anions through electrostatic interactions. The performance of the batteries is significantly improved with the use of this functionalized separator.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Pingping Li, Lei Han, Donghun Kim, Kemal Celebi
Summary: This study presents a fast synthetic strategy for the preparation of high-quality platelike MFI crystals using a thin-wall tubular reactor. The strategy is efficient, time-saving, and can be optimized, making it applicable to the preparation and optimization of other important materials.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Haitao Yin, Wei Wang, Yuxin Li, Hu Wen, Shuang Chen, Nanzhe Jiang
Summary: This study presents a template-free and solid-state-like crystallisation method for the synthesis of ZSM-5 zeolite, which can be scaled-up in production. Mechanical mixing of starting material components improves the dispersion of materials, leading to ZSM-5 zeolite with high crystallinity and size uniformity.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Congli Li, Jiang Wang, Zhenfei Wang, Jinxiang Dong, Qi Shi
Summary: This study investigates the evolution and autoreduction behavior of Cu species in CuCl/NaY adsorbent during vacuum thermal activation. It is found that Cu species migrate from supercages to the nearby plane of the six-membered ring connecting the supercage and sod cage during vacuum activation. At 150 degrees C, vacuum autoreduction occurs, resulting in the formation of Cu+Cl- species. The results provide reference for the preparation of pi-complex adsorbents.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Irena Khatrin, Iman Abdullah, Alan J. Mccue, Yuni K. Krisnandi
Summary: Hierarchical porous system with two types of mesopores provides a solution to the diffusion limitation in conventional zeolites. Cobalt oxide impregnated hierarchical ZSM-5 zeolite samples with intra- and inter-crystalline mesopores were synthesized using two different strategies. The physicochemical properties of the modified catalysts were analyzed, revealing distinct features given by the two mesoporous configurations. Catalytic activity analysis showed that Co-oxide/ZSM-5 with inter-crystalline mesopores exhibited higher activity in methane partial oxidation reaction compared to Co-oxide/ZSM-5 with intra-crystalline mesopores.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Nataliia Reinders, Martin Durovic, Pavla Honcova, Zaneta Dohnalova, Jana Luxova, Stanislav Slang, Jhonatan Rodriguez-Pereira, Petra S. Sulcova
Summary: This study presents a new method for preparing a microporous Ni2P/C catalyst with high catalytic activity. The redox reaction and carbon matrix formation during high-temperature treatment contribute to the stability and activity of the catalyst. Experimental and analytical results suggest that the microporous structure of the composite plays a crucial role in its catalytic performance. These findings are important for practical applications of efficient hydrogen production by water electrolysis.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Ana Raquel Bertao, Viktoriya Ivasiv, Cristina Almeida-Aguiar, Patricia R. Correia, Antonio M. Fonseca, Manuel Banobre-Lopez, Fatima Baltazar, Isabel C. Neves
Summary: This study developed a zeolite-based delivery system (ZDS) using silver and 5-Fluorouracil as antimicrobial and antineoplastic agents. The ZDS was characterized and its antimicrobial properties were investigated, showing better antibacterial effectiveness for the ZDS containing both silver and 5-FU.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Naonobu Katada, Nobuki Ozawa, Etsushi Tsuji, Keigo Kanehara, Akiho Otsuka, Taiga Sakamoto, Kirari Umezawa, Hitoshi Matsubara, Satoshi Suganuma, Momoji Kubo
Summary: First principles calculations were used to investigate the pathway for methylation of benzene with methane catalyzed by MFI type zeolite-supported Co species. The strong adsorption of benzene on Co is found to lower the activation energy for methane dissociation and promote the formation of toluene precursor. The activation energy of methane dissociation is also affected by the Al-Al distance.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Yuan Liu, An T. Ta, Kyoung Chul Park, Shenyang Hu, Natalia B. Shustova, Simon R. Phillpot
Summary: We use density functional theory to investigate the interactions of cerium, americium, and curium cations with crown ethers. Our results demonstrate that crown ethers can capture cerium, americium, and curium ions, and modifying the crown ether structure by substituting nitrogen atoms for oxygen atoms significantly increases their binding energies with radionuclides.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Zhengwu Peng, Shixing Wang, Yihui Wu, Xiang Liu, Hongliang Liu, Dekun Zhang, Likang Fu
Summary: An efficient adsorbent for recovery of germanium was prepared and characterized in this study. The adsorption behavior of Ge(IV) on the adsorbent was analyzed, and the results showed that it follows pseudo-secondary kinetic model and Langmuir isotherm model. The adsorbent exhibited good anionic anti-interference ability and can still maintain high adsorption efficiency after repeated adsorption.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
