Article
Chemistry, Applied
Haikuo Ma, Zhiguo Zhu, Pengpeng Tang, Ting Su, Peng Wu, Hongying Lu
Summary: This study successfully synthesized hierarchical Ti-Beta zeolite with abundant and uniform intracrystalline mesopore, and thoroughly explored the crystallization process using a series of methods, demonstrating excellent catalytic performance.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Energy & Fuels
Lin-Jiao Wei, Peng Peng, Ke Qiao, Guang-Nan Cheng, Ubong Jerome Etim, Zi-Feng Yan
Summary: In this study, hierarchical Y zeolites with abundant mesopores connecting the interior and exterior surfaces were successfully synthesized using citric acid and/or ammonium tetrafluoroborate as agents. The post-synthesis dealumination method effectively introduced interconnected mesopores without sacrificing the zeolite crystallinity. The hydrocracking test results showed that the catalyst derived from the sequentially treated hierarchical Y zeolite had a higher naphtha yield compared to the commercial counterpart.
Article
Chemistry, Inorganic & Nuclear
Shiyao Wang, Xu Wu, Huijuan Duan, Fei Shi, Yisheng Chen
Summary: In this study, a hierarchical beta zeolite material with a larger mesopore diameter and higher specific surface area was successfully synthesized, making it suitable as a catalyst carrier for medium and high-temperature catalytic reaction systems.
SOLID STATE SCIENCES
(2022)
Article
Chemistry, Applied
Donghang Chen, Zhongyu Jiang, Yongsheng Jia, Xiaolong Wang, Wei Deng, Soamwadee Chaianansutcharit, Aimin Zhou, Limin Guo
Summary: The diffusion limitation of conventional silicalite-1 zeolites was overcome by adjusting particle size and introducing intracrystalline mesopores, and their effects on toluene sorption were studied. Decreasing particle size increased the diffusion rate of toluene, and the introduction of mesopores further improved it. However, higher diffusion rates did not always lead to better adsorption capacity. The breakthrough time showed a volcano shape for zeolites with different particle sizes, and it decreased after introducing intracrystalline mesopores. The microporous structure played a major role in toluene adsorption capacity, while the mesoporous structure reduced diffusion limitation and improved microspore utilization.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Le Xu, Alexander Okrut, Thomas Rea, Kaustav Chaudhuri, Jinyi Han, Alexander Kuperman, Alexander Katz
Summary: Postsynthetic modification of mesoporous Y zeolite (Meso-Y) allows for uniform nanoscale coating of silica, alumina, or aluminosilicate on the interior surface, without causing significant micropore blockage or synthesis of a separate bulk alumina-containing phase. The use of CTAB surfactant as a soft template is crucial for this selective modification under dry conditions. This approach enables control of the surface charge and has important implications for adsorption and catalysis applications.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Multidisciplinary Sciences
Jie-Qiong Chen, Yu-Zhao Li, Qing-Qing Hao, Huiyong Chen, Zhao-Tie Liu, Chengyi Dai, Jianbo Zhang, Xiaoxun Ma, Zhong-Wen Liu
Summary: This research demonstrates the direct synthesis of single-layer MWW zeolite with high crystallinity and excellent stability, with a formation mechanism involving balanced rates between nucleation/growth of MWW nanocrystals and incorporation of organosilane into the MWW unit cell. By simply adjusting synthesis conditions, MWW nanosheets with tunable thickness can be obtained.
NATIONAL SCIENCE REVIEW
(2021)
Article
Chemistry, Inorganic & Nuclear
Zhongxu Wang, Peng Lu, Shuo Li, Yuling Shan, Lu Li, Xiaosheng Wang, Shuwei Liu, Lei Han, Shiwei Liu, Yuxiang Liu
Summary: A surface modification strategy is proposed to balance the contradiction between mesopore introduction and loss of microporosity in Beta molecular sieves. By selectively adsorbing organic alkaline molecules on the surface, the as-synthesized hierarchical Beta molecular sieves retain more acid sites and exhibit effective catalytic performance in the dehydration reaction of glucose.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Organic
A. V. Shkuropatov, A. G. Popov, I. I. Ivanova
Summary: The study found that different base types have a significant impact on the mesoporous structure of MWW zeolites, with cylindrical mesopores and slit-like pores affecting catalytic activity differently.
PETROLEUM CHEMISTRY
(2021)
Article
Chemistry, Physical
Hayat Adawi, Florence O. Odigie, Michele L. Sarazen
Summary: This study compares the performance differences of different zeolite structures in catalytic reactions, as well as the impact of hierarchical mesopores on their functions.
MOLECULAR SYSTEMS DESIGN & ENGINEERING
(2021)
Article
Chemistry, Applied
Xinyu Li, Jose Andres Hernandez Gaitan, Shinya Kokuryo, Tomoka Sumi, Haruna Kitamura, Koji Miyake, Yoshiaki Uchida, Norikazu Nishiyama
Summary: Hierarchical zeolites with mesopores only on external surfaces were synthesized via an alkaline treatment for organic structure-directing agents (OSDA)-occluded zeolites. These zeolites exhibited higher catalytic activity and improved mass transfer due to the presence of mesopores on external surfaces. They also showed higher hydrothermal stability compared to conventional hierarchical zeolites.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Applied
Karolina Ogorzaly, Barbara Gil, Michal Mazur, Waclaw Makowski, Wieslaw J. Roth
Summary: The study demonstrates the synthetic capabilities of zeolite monolayers in solution for MWW framework, allowing for the preparation of molecularly intimate mixtures of different zeolite topologies. Mixing different zeolite components can enhance catalytic activity and sorption properties, potentially leading to practical benefits in applications.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Physical
Peng Liu, Qian Liu, Donghai Mei
Summary: A computational study on the dealumination process of H-BEA zeolite in the presence of steam reveals it follows the S-N2 mechanism, with different free energy barriers for each hydrolysis step. The first two steps are easier to break compared to the last two.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Applied
Karolina Ogorzaly, Gabriela Jajko, Karol Wolski, Szczepan Zapotoczny, Martin Kubu, Wieslaw J. Roth, Barbara Gil, Waclaw Makowski
Summary: This study investigates the preparation of layered zeolite composites using surfactant solutions under different pH conditions. The results show that samples prepared under high alkalinity exhibit well-defined expanded interlayer distances and show higher catalytic activity during TEOS treatment.
Article
Chemistry, Inorganic & Nuclear
Tianlong Wang, Wei Huang, He Han, Jiaxing Zhang, Huifang Wu, Xin Yan, Yuanjuan Jiang, Lu Fang, Bochun Zhang, Xinwen Guo, Limin Ren
Summary: A facile hydrothermal etching-healing strategy is proposed to fabricate Sn-MWW zeolite without using any supporting agents and additives. This approach has the advantages of low organic structure-directing agent consumption and rapid growth, resulting in successful Sn introduction and excellent catalytic performance.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Energy & Fuels
Shi-Wei Cao, Peng Xiao, Jie Wang, Yu Sun, Yun-Shan Shang, Ya-Fen Ge, Qi Liu, Yan-Jun Gong, Guang Mo, Zhi-Hong Li
Summary: In this study, a nanoscale amorphous SiO2-Al2O3 species (APS) was designed and successfully applied in the synthesis of MCM-22 zeolite. The addition of APS reduced the HMI amount and crystallization time, leading to the formation of APS-MWW zeolite with smaller particle size and thinner stacked layer thickness. The results demonstrate the significant role of APS in promoting the synthesis of MWW zeolites.
Article
Nanoscience & Nanotechnology
Wen Liu, Junjie Li, Zhenni Liu, Zhiqiang Yang, Xuebin Liu, Xingzhi Tan, Longya Xu, Xiujie Li, Xiangxue Zhu
Summary: A facile synthesis route was developed for preparing ZSM-48 zeolite with ultralarge mesoporosity, improving its catalytic stability in the m-xylene isomerization reaction and promoting its practical application.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Chemical
Hongyu Shen, Min Liu, Junjie Li, Xiujie Li, Sujuan Xie, Fucun Chen, Longya Xu, Xinwen Guo, Chunshan Song, Xiangxue Zhu
Summary: The core-shell ZSM-5@silicalite-1 with regular morphology was prepared through an innovative tandem synthesis strategy, showing higher stability and para-xylene selectivity in n-hexane catalytic cracking reaction. Different samples with varying Si and Al distributions could be synthesized by adjusting the synthesis process parameters.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Heng Dai, Choongsze Lee, Wen Liu, Taimin Yang, Jakob Claret, Xiaodong Zou, Paul J. Dauenhauer, Xiujie Li, Jeffrey D. Rimer
Summary: Designing zeolite catalysts with improved mass transport properties is essential for networks with one- or two-dimensional pore topologies. Introducing fins can significantly enhance catalyst lifetime and selectivity, with confirmation of identical crystallographic registry between fins and seeds. Time-resolved titration of acid sites verifies the improved mass transport properties of ferrierite with fins compared to conventional analogues.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Chemical
Weifeng Chu, Shenglin Liu, Wenjie Xin, Yanan Wang, Zhenni Liu, Chuanyu Yang, Yuzhong Wang, Longya Xu, Xiujie Li, Xiangxue Zhu
Summary: MWW zeolite is an excellent catalyst for the liquid-phase alkylation of benzene with light olefins. In this study, MCM-49 zeolite was synthesized with cyclohexylamine and shaped into cylindrical catalysts using silica sol and pseudoboehmite. The properties of the parent zeolite and shaped catalysts were characterized, and the catalytic performance of the shaped catalysts was evaluated. The results showed that HMCM-49-SiO2, with fewer Lewis acid sites and excellent diffusion property, exhibited superior catalytic performance and stability compared to the counterpart using Al2O3 as a binder.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Applied
Wen Liu, Pengfei Wei, Junjie Li, Yanan Wang, Shirui Xu, Zhiqiang Yang, Xuebin Liu, Longya Xu, Xiujie Li, Xiangxue Zhu
Summary: This study successfully controlled the morphology of Al-rich EUO zeolite through inter-zeolite transformation and discovered a solid phase crystallization mechanism. The EUO zeolite obtained by this new strategy showed higher selectivity. This research provides new insights into zeolite morphology control and crystallization mechanisms through inter-zeolite transformation.
Article
Chemistry, Applied
Pengfei Wei, Wen Liu, Junjie Li, Yanan Wang, Qiang Yu, Zhiqiang Yang, Xuebin Liu, Longya Xu, Xiujie Li, Xiangxue Zhu
Summary: This study investigated the formation mechanisms of EUO zeolites from different precursors, revealing the effects of hydrolysis temperature and timing of aluminum source introduction on EUO crystal nucleation.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Physical
Jiapei Wang, Min Liu, Junjie Li, Chuanfu Wang, Xinbao Zhang, Yingbin Zheng, Xiujie Li, Longya Xu, Xinwen Guo, Chunshan Song, Xiangxue Zhu
Summary: In this study, the phase evolution of Fe-based catalysts in CO2-assisted dehydrogenation was investigated. It was found that Fe3C is the active phase for propane dehydrogenation and shows high activity for reforming and cracking when CO2 is introduced. Higher CO2/i-C4H10 feed ratio leads to a longer persistence of iron species in a higher valence state. Fe3O4 phase remains stable with a CO2/i-C4H10 feed ratio of 1/2 or higher, resulting in a relatively stable isobutane conversion.
Article
Chemistry, Physical
Yehong Wang, Jiapei Wang, Yuda Zhang, Qiang Guo, Jie An, Yafei Liang, Yanan Wang, Pengfei Cao, Marc Heggen, Rafal E. Dunin-Borkowski, Xiangxue Zhu, Xiujie Li, Feng Wang
Summary: This study reports the application of a Sn-doped catalyst in CO2 oxidative dehydrogenation of propane. By forming PtSn alloy and increasing oxygen vacancy concentration in CeO2 support, propane conversion and propylene selectivity are improved.
Article
Nanoscience & Nanotechnology
Wen Liu, Junjie Li, Qiang Yu, Huihui Chen, Wenjuan Liu, Zhiqiang Yang, Xuebin Liu, Zhaochao Xu, Shutao Xu, Xiangxue Zhu, Xiujie Li
Summary: A hollow Al-rich ZSM-48 zeolite with improved diffusion ability and acid density has been successfully synthesized through an alumination-recrystallization strategy, solving the challenges of diffusion limitation and acid deficiency. The obtained zeolite shows excellent catalytic stability and high p-xylene yield, indicating its strong potential for industrial applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Environmental
Qiang Yu, Junjie Li, Wen Liu, Yanan Wang, Weifeng Chu, Xinbao Zhang, Longya Xu, Xiangxue Zhu, Xiujie Li
Summary: A novel microporous silica-based material (MIS) with abundant micropores and wide range of pore sizes was successfully synthesized using tetrabutylammonium hydroxide (TBAOH). The optimized MIS showed high adsorption capacity for m-xylene and other volatile organic compounds (VOCs), making it a promising adsorbent for VOC removal.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Applied
Yanan Wang, Yu Zhang, Wen Liu, Qiang Yu, Zhenni Liu, Shirui Xu, Jie An, Xiujie Li, Xiangxue Zhu
Summary: Here, an efficient and rapid synthesis strategy for MOR zeolite with the assistance of organic/inorganic additives is developed. The strategy effectively promotes the nucleation of MOR and benefits the recycling of the organic structure directing agent TEAOH. By this strategy, nano-sized MOR zeolite with large mesoporous volume is successfully synthesized.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Applied
Dongpu Zhao, Xiujie Li, Weifeng Chu, Yanan Wang, Wenjie Xin, Chao Feng, Guangjin Hou, Longya Xu, Shenglin Liu, Xiangxue Zhu
Summary: Zeolite Beta nanospheres and hollow-boxes were successfully synthesized using a simple hydrothermal method. The role of NMP changed with the variation of crystallization temperature and TEAOH content. Undesired zeolites may be formed under high synthesis temperature, high Si/ Al ratio, and low TEAOH content. The obtained catalysts exhibited excellent catalytic activity.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Applied
Qiong Wu, Jiamin Yuan, Chunmu Guo, Zhenni Liu, Xiujie Li, Zhiqiang Liu, Wei Wang, Wei Wu
Summary: In this study, one-dimensional SAPO-11, SAPO-31, and SAPO-41 with different pore sizes were synthesized and used as supports for Pd catalysts. Molecular dynamics simulation revealed that the diffusion of reactants and intermediates in the micropore channels was strongly affected by the opening size of the channels. The Pd/SAPO-31 catalyst showed the highest activity and yield of iso-hexadecane in the hydroisomerization of n-hexadecane, attributed to improved diffusion and favorable metal-acid balance. Furthermore, it was found that the hydroisomerization over Pd/SAPO-31 occurred via the key lock mechanism, leading to a high proportion of multi-branched iso-hexadecane at high conversion of n-hexadecane. The Pd/SAPO-31 catalyst was proven to be an effective bifunctional catalyst for industrial biodiesel production.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Engineering, Chemical
Wen Liu, Junjie Li, Qiang Yu, Yanan Wang, Weifeng Chu, Yingbin Zheng, Zhiqiang Yang, Xuebin Liu, Xiujie Li, Xiangxue Zhu
Summary: This study developed a direct synthesis route for submicron (500 nm) spherical ZSM-48 zeolite with the assistance of F- ions at low crystallization temperature. Through detailed investigation, a reliable formation mechanism of spherical ZSM-48 zeolite was proposed. The submicron spherical ZSM-48 zeolite showed significantly improved stability and higher selectivity for p-xylene in m-xylene isomerization compared to traditional zeolite.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Applied
Weifeng Chu, Xiaona Liu, Zhiqiang Yang, Hiroya Nakata, Xingzhi Tan, Xuebin Liu, Longya Xu, Peng Guo, Xiujie Li, Xiangxue Zhu
Summary: By conducting Rietveld refinement against powder X-ray diffraction data, this study unraveled the constrained Al crystallographic sites in FER-type zeolites, revealing distinct local environments and Al-rich positions, which can explain the limited catalytic activity in certain reactions.
CHINESE JOURNAL OF CATALYSIS
(2021)
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)
