Article
Engineering, Chemical
Sikander Rafiq, Muhammad Saeed, Asif Jamil, Muhammad Imran Rashid, Muhammad Irfan, Tanveer Iqbal, Abrar Inayat, Farrukh Jamil, Jibran Iqbal, Muhammad Shahzad Khurram, Muhammad Shozab Mehadi
Summary: Membrane technology is an economical and efficient solution for CO2 separation. The use of nanofillers in polymeric matrices to produce mixed-matrix membranes (MMMs) enhances their performance. However, there is limited literature available on the potential improvement of MMMs for CO2 capture by using functionalized and non-functionalized Halloysite nanotubes (HNTs).
CHEMBIOENG REVIEWS
(2023)
Article
Chemistry, Applied
Shuoyu Wang, Xianyu Qiu, Yangguan Chen, Shuixia Chen
Summary: Amine-functionalized porous adsorbent is an important material for carbon dioxide capture due to its stability and efficiency. In this study, a novel amine-functionalized CO2 adsorbent was synthesized by copolymerization of styrene, divinylbenzene, tetraethyl orthosilicate, and triethoxyvinylsilane in a high internal phase emulsion. The resulting polyHIPE showed enhanced CO2 adsorption capacity under both dry and humid conditions.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Physical
Changyuan Song, Boyi Zhang, Liang Hao, Jiakang Min, Ning Liu, Ran Niu, Jiang Gong, Tao Tang
Summary: This study proposes a strategy for the sustainable conversion of waste plastics into valuable carbon materials. By stepwise crosslinking, waste polyesters are transformed into nitrogen-doped porous carbon (NPC) with well-defined microstructures. The NPC exhibits excellent performance in CO2 capture and solar steam generation, making it a promising material for solar energy conversion and environmental protection.
GREEN ENERGY & ENVIRONMENT
(2022)
Article
Engineering, Environmental
Yao Li, Tao Zhang, Yage Wang, Binbin Wang
Summary: Versatile porous carbon adsorbents were prepared from waste cornstalk using hydrothermal carbonization treatment and KOH activation process. The influence of activation degree on porous structure and chemical components was discussed, with analysis on the effects of porous texture and heteroatoms doping on CO2 capture and methanol adsorption performance. Adsorbents exhibited significant CO2 and methanol uptake, with excellent reusability and selectivity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Sebastian Anila, Cherumuttathu H. Suresh
Summary: This study demonstrates that under the influence of multiple molecules of guanidine and CO2, the non-covalent GMIDLINE HORIZONTAL ELLIPSISCO2 complex can transform into a strongly interacting G-CO2 covalent complex. Density functional theory analysis reveals a strong N-CO2 covalent interaction in (G-CO2)(n) clusters, with the N-C distance decreasing as the number of CO2 molecules in the cluster increases.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Kannika Jeamjumnunja, Orrapa Cheycharoen, Nattida Phongzitthiganna, Supa Hannongbua, Chaiya Prasittichai
Summary: The outer surface of halloysite nanotubes (HNTs) was selectively modified using (3-aminopropyl)triethoxysilane (APTES) to create amine-functionalized HNTs (HNTs/APTES) capable of selectively capturing and releasing carbon dioxide gas. Characterization through thermogravimetric analysis and electrochemical impedance spectroscopy revealed the material's high efficiency and stability in CO2 adsorption/desorption as well as proton conductivity modulation.
ACS APPLIED NANO MATERIALS
(2021)
Article
Engineering, Chemical
Xinmei Lu, Liying Liu, Haoran Liu, Guo Tian, Gao Peng, Li Zhuo, Zhe Wang
Summary: In this study, zeolite-X with high crystallinity and a large specific surface area was synthesized by purifying, calcining, and hydrothermally synthesizing Halloysite nanotubes (HNTs). The synthesized zeolite-X exhibits good crystallinity, uniform particle size, and thermal stability similar to industrial zeolite. This method has potential applications in CO2 capture from flue gases.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Chemistry, Applied
Yanyong Sun, Minmin Gou
Summary: Polymer nanotubes with amino-rich surface were synthesized by in situ polymerization on the halloysite nanotubes (HNTs), and then incorporated into mixed-matrix membranes (MMMs) for gas separation. The presence of amino groups on the nanotubes improved the gas permeability and selectivity of CO2. The structure of the nanotubes also provided multiple transfer channels for CO2.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Physical
Sooji Park, Jungju Ryu, Hye Yeon Cho, Daewon Sohn
Summary: Halloysite nanotubes loaded with HKUST-1 (HKUST-1@HNT) were successfully synthesized and characterized. The loading capacity of HKUST-1 crystals increased with the etching treatment. The composites exhibited effective CO2 adsorption performance when amine-functionalized HNTs were used. The synthesis of HKUST-1 and HNTs hybrid materials is a promising strategy for the development of novel adsorbing materials.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Environmental Sciences
He Wang, Han Wang, Guoshuai Liu, Qun Yan
Summary: An environment-friendly, cost-effective, and facile N-doped porous carbon material was prepared from nitrogen abundant Taihu blue algae biomass for CO2 uptake. The material exhibited stable adsorption performance under various conditions, showing promise for potential applications in CO2 capture.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Chemical
Jonas Hedlund, Gustavo Garcia, Marco Balsamo, Ming Zhou, Johanne Mouzon
Summary: The study demonstrated that uniform 13X films grown on steel monolith supports showed excellent CO2 adsorption performance, with fast adsorption rate and high mass transfer efficiency. The steel monolith support provided good mechanical strength and thermal conductivity, making this adsorbent a promising alternative for CO2 separation processes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Xiaofei Guo, Guojie Zhang, Chenlei Wu, Jun Liu, Guoqiang Li, Yuqiong Zhao, Ying Wang, Ying Xu
Summary: This study successfully prepared N, S, O co-doped porous activated carbon with excellent CO2 capture performance by using poplar sawdust, sulfur-containing waste liquid, and potassium oxalate as carbon precursors. The synergy of porous structure and surface chemistry contributed to the outstanding CO2 adsorption performance of the best sample prepared with SCWL and K2C2O4. The application of SCWL and K2C2O4 can control heteroatom doping and pore structure, with the optimum sample showing significant CO2 capture potential.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Applied
Jinhao Li, Agula Bao
Summary: A sustainable and convenient self-sacrificed templating method was developed to prepare nitrogen-doped hierarchical porous carbons with excellent CO2 capture performance. The materials exhibited large specific surface areas, well-developed porosities, and showed promising prospects for practical application in CO2 capture.
JOURNAL OF POROUS MATERIALS
(2022)
Article
Engineering, Environmental
Xue-Lei Duan, Chun-Gang Yuan, Kai-Qang He, Jie-Xuan Yu, Yang-Hong Jiang, Qi Guo, Yan Li, Su-Juan Yu, Jing-Fu Liu
Summary: In this study, CuCl2-modified halloysite nanotubes (CuCl2-HNTs) were successfully prepared as an adsorbent for the removal of arsenic from high-temperature coal combustion flue gas. The CuCl2-HNTs showed high arsenic adsorption capacity and tolerance to high concentrations of gases. The captured arsenic could be stable at high temperatures.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Review
Chemistry, Multidisciplinary
Thien S. Nguyen, Nesibe A. Dogan, Haeseong Lim, Cafer T. Yavuz
Summary: The development of porous solid materials with tunable amine content is necessary for efficient CO2 capture, and unifying both sorbents in one system can address regeneration issues.
ACCOUNTS OF CHEMICAL RESEARCH
(2023)
Review
Environmental Sciences
Paul Sebastian Selvaraj, Kalaiselvi Periasamy, Kathirvel Suganya, Kavitha Ramadass, Selvamurugan Muthusamy, Poornima Ramesh, Richard Bush, Salom Gnana Thanga Vincent, Thava Palanisami
Summary: Anaerobic digestion is a promising process for energy production and waste management. The resulting digestate can be valorized through various processes for applications in agriculture, energy production, and the production of high-value chemicals.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Review
Materials Science, Multidisciplinary
Nanthi Bolan, Son A. Hoang, Jingzi Beiyuan, Souradeep Gupta, Deyi Hou, Ajay Karakoti, Stephen Joseph, Sungyup Jung, Ki-Hyun Kim, M. B. Kirkham, Harn Wei Kua, Manish Kumar, Eilhann E. Kwon, Yong Sik Ok, Vishma Perera, Jorg Rinklebe, Sabry M. Shaheen, Binoy Sarkar, Ajit K. Sarmah, Bhupinder Pal Singh, Gurwinder Singh, Daniel C. W. Tsang, Kumar Vikrant, Meththika Vithanage, Ajayan Vinu, Hailong Wang, Hasintha Wijesekara, Yubo Yan, Sherif A. Younis, Lukas Van Zwieten
Summary: Biochar is a charred material with high surface area and abundant functional groups produced by pyrolysis, and it has multifunctional values when applied in soil, but may also lead to unintended consequences.
INTERNATIONAL MATERIALS REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Xinwei Guan, Tao Wan, Long Hu, Chun-Ho Lin, Jialin Yang, Jing-Kai Huang, Chien-Yu Huang, Shamim Shahrokhi, Adnan Younis, Kavitha Ramadass, Kewei Liu, Ajayan Vinu, Jiabao Yi, Dewei Chu, Tom Wu
Summary: Integrating multiple semiconductors with distinct physical properties is a practical design strategy for realizing novel optoelectronic devices with unprecedented functionalities. In this work, a photonic resistive switching memory is demonstrated based on a bilayer architecture of strontium titanate quantum dots and all-inorganic halide perovskite. The device shows improved resistive switching performance, UV-visible dual-band response, and tri-mode operation.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Arun V. Baskar, Mercy R. Benzigar, Siddulu Naidu Talapaneni, Gurwinder Singh, Ajay S. Karakoti, Jiabao Yi, Ala'a H. Al-Muhtaseb, Katsuhiko Ariga, Pulickel M. Ajayan, Ajayan Vinu
Summary: Functionalized fullerene nanostructures with excellent optoelectronic properties and fast charge transfer capabilities are suitable for various applications such as polymer solar cells and drug delivery. Fine control over their surface and bulk properties can be achieved through different synthesis methods and chemical modifications.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yoshihiro Sugi, Selvarajan Premkumar, Stalin Joseph, Kavitha Ramadass, Clastinrusselraj Indirathankam Sathish, Venkata D. B. C. Dasireddy, Jae-Hun Yang, Kenichi Komura, Qing Liu, Yoshihiro Kubota, Ajayan Vinu
Summary: This study systematically assigned four Triisopropylnaphthalene isomers based on their reaction pathways, with different zeolite catalysts playing a significant role in the formation of different isomers. The preferential formation of certain TriIPN isomers was observed depending on the reaction conditions and precursors.
RESEARCH ON CHEMICAL INTERMEDIATES
(2022)
Review
Materials Science, Multidisciplinary
Harpreet Singh Gujral, Gurwinder Singh, Arun Baskar, Xinwei Guan, Xun Geng, Abhay Kotkondawar, Sadhana Rayalu, Prashant Kumar, Ajay Karakoti, Ajayan Vinu
Summary: This review presents the recent developments in metal nitrides for hydrogen production, covering synthesis methods, techniques, and processes. Metal nitrides have drawn considerable attention from researchers due to their good promise for hydrogen production. The applications of hydrogen in electrochemical and photocatalytic processes are summarized in this review.
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Kavitha Ramadass, C. I. Sathish, Gurwinder Singh, Sujanya M. Ruban, Ajanya M. Ruban, Rohan Bahadur, Gopalakrishnan Kothandam, Tony Belperio, James Marsh, Ajay Karakoti, Jiabao Yi, Ajayan Vinu
Summary: In this study, an integrated approach was employed to design low-cost and highly efficient N-doped nanoporous carbons for energy storage and carbon capture applications. The optimized materials showed micro and mesoporosity, high specific surface areas, and nitrogen content. The materials exhibited excellent electrochemical performance as supercapacitors and CO2 adsorbents, outperforming other materials such as clay, activated carbon, and mesoporous silica.
Article
Engineering, Environmental
Kavitha Ramadass, Kripal S. Lakhi, C. Sathish, Ajanya M. Ruban, Rohan Bahadur, Gurwinder Singh, Harpreet S. Gujral, Mohammed Al-Abri, Alaa H. Al-Muhtaseb, Ehsan Tavakkoli, Jiabao Yi, Ajay Karakoti, Ajayan Vinu
Summary: We have demonstrated the synthesis of copper nanoparticles decorated over nitrogen-doped mesoporous carbon, which exhibits excellent conducting, redox, basic, adsorption, and textural properties. The prepared material shows potential applications in adsorption and electrochemical fields.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
R. A. Sharath, F. Fang, J. Futter, W. J. Trompetter, G. Singh, A. Vinu, J. Kennedy
Summary: This study reports a controlled one-step thermal approach for creating nitrogen defects and modifying the overall structure of g-C3N4 without adding any external reducing/oxidizing agent. The defect-modified g-C3N4 showed increased surface area and bandgap compared to raw g-C3N4.
EMERGENT MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Arun V. Baskar, Gurwinder Singh, Ajanya M. Ruban, Jefrin M. Davidraj, Rohan Bahadur, Prasanthi Sooriyakumar, Prashant Kumar, Ajay Karakoti, Jiabao Yi, Ajayan Vinu
Summary: The rapid growth in electronic and portable devices has increased the demand for safe, durable, lightweight, low-cost, high-energy, and high-power-density electrode materials for rechargeable batteries. This review discusses the use of biomass-based materials and their hybrids for energy generation research, highlighting their unique properties and advancements in preparation and modification strategies. The electrochemical performances of these materials in different batteries and the challenges in maximizing their specific capacity and lifetime are also addressed.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Engineering, Environmental
Gurwinder Singh, Ajanya Maria Ruban, Xun Geng, Ajayan Vinu
Summary: Due to their high porosity, chemically activated porous carbons are widely used in various applications. Potassium-based salts, other than KOH, can also produce high porosity in the porous carbons with little environmental impact. This review discusses the usefulness and future potential of various K-salts in producing highly efficient porous carbons for various applications, and also reviews the methodology and mechanistic aspects of chemical activation using K-salts.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Materials Science, Multidisciplinary
Gurwinder Singh, Kavitha Ramadass, Venkata D. B. C. DasiReddy, Xiangzhou Yuan, Yong Sik Ok, Nanthi Bolan, Xue Xiao, Tianyi Ma, Ajay Karakoti, Jiabao Yi, Ajayan Vinu
Summary: Hydrogen is considered a promising candidate for future energy demands due to its high energy density and non-polluting combustion. However, issues with generation, storage, and utilization of hydrogen restrict its wider application. Solid materials can play a significant role in addressing these issues by effectively generating, storing, and utilizing hydrogen. This review provides a broad overview of materials for various hydrogen applications and emphasizes the importance of investing in materials research and development.
PROGRESS IN MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Sujanya Maria Ruban, Kavitha Ramadass, Gurwinder Singh, Siddulu Naidu Talapaneni, Gunda Kamalakar, Chandrakanth Rajanna Gadipelly, Lakshmi Kantham Mannepalli, Yoshihiro Sugi, Ajayan Vinu
Summary: Carbon nitrides are a type of metal-free catalytic materials with great potential for chemical transformations and organocatalysis. Their low cost, thermal and chemical stability, non-toxicity, ease of functionalization, and porosity make them versatile for catalysis. This review discusses N-rich carbon nitrides and their role in various organic catalytic reactions. It also explores the structure-property relationship and potential value of these materials compared to other catalytic materials. The review aims to provide up-to-date information on the developments in carbon nitride-based organic catalysis and their future prospects.
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
(2023)
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)
